Upload
peng-xuefeng
View
47
Download
1
Tags:
Embed Size (px)
Citation preview
GSM/EDGE BSS, Rel. RG20(BSS), Operating Documentation, Issue 09
Reference
4 Handover Measurement
DN9813636
Issue 13-2Approval Date 2011-10-10
Confidential
Nokia Siemens Networks is continually striving to reduce the adverse environmental effects of its products and services. We would like to encourage you as our customers and users to join us in working towards a cleaner, safer environment. Please recycle product packaging and follow the recommendations for power use and proper disposal of our products and their compo-nents.
If you should have questions regarding our Environmental Policy or any of the environmental services we offer, please contact us at Nokia Siemens Networks for any additional information.
2 DN9813636
4 Handover Measurement
Id:0900d805808efca3Confidential
The information in this document is subject to change without notice and describes only the product defined in the introduction of this documentation. This documentation is intended for the use of Nokia Siemens Networks customers only for the purposes of the agreement under which the document is submitted, and no part of it may be used, reproduced, modified or transmitted in any form or means without the prior written permission of Nokia Siemens Networks. The documentation has been prepared to be used by professional and properly trained personnel, and the customer assumes full responsibility when using it. Nokia Siemens Networks welcomes customer comments as part of the process of continuous development and improvement of the documentation.
The information or statements given in this documentation concerning the suitability, capacity, or performance of the mentioned hardware or software products are given "as is" and all liability arising in connection with such hardware or software products shall be defined conclusively and finally in a separate agreement between Nokia Siemens Networks and the customer. However, Nokia Siemens Networks has made all reasonable efforts to ensure that the instructions contained in the document are adequate and free of material errors and omissions. Nokia Siemens Networks will, if deemed necessary by Nokia Siemens Networks, explain issues which may not be covered by the document.
Nokia Siemens Networks will correct errors in this documentation as soon as possible. IN NO EVENT WILL Nokia Siemens Networks BE LIABLE FOR ERRORS IN THIS DOCUMENTA-TION OR FOR ANY DAMAGES, INCLUDING BUT NOT LIMITED TO SPECIAL, DIRECT, INDI-RECT, INCIDENTAL OR CONSEQUENTIAL OR ANY LOSSES, SUCH AS BUT NOT LIMITED TO LOSS OF PROFIT, REVENUE, BUSINESS INTERRUPTION, BUSINESS OPPORTUNITY OR DATA,THAT MAY ARISE FROM THE USE OF THIS DOCUMENT OR THE INFORMATION IN IT.
This documentation and the product it describes are considered protected by copyrights and other intellectual property rights according to the applicable laws.
The wave logo is a trademark of Nokia Siemens Networks Oy. Nokia is a registered trademark of Nokia Corporation. Siemens is a registered trademark of Siemens AG.
Other product names mentioned in this document may be trademarks of their respective owners, and they are mentioned for identification purposes only.
Copyright © Nokia Siemens Networks 2011. All rights reserved
f Important Notice on Product SafetyThis product may present safety risks due to laser, electricity, heat, and other sources of danger.
Only trained and qualified personnel may install, operate, maintain or otherwise handle this product and only after having carefully read the safety information applicable to this product.
The safety information is provided in the Safety Information section in the “Legal, Safety and Environmental Information” part of this document or documentation set.
The same text in German:
f Wichtiger Hinweis zur Produktsicherheit Von diesem Produkt können Gefahren durch Laser, Elektrizität, Hitzeentwicklung oder andere Gefahrenquellen ausgehen.
Installation, Betrieb, Wartung und sonstige Handhabung des Produktes darf nur durch geschultes und qualifiziertes Personal unter Beachtung der anwendbaren Sicherheits-anforderungen erfolgen.
Die Sicherheitsanforderungen finden Sie unter „Sicherheitshinweise“ im Teil „Legal, Safety and Environmental Information“ dieses Dokuments oder dieses Dokumentations-satzes.
DN9813636 3
4 Handover Measurement
Id:0900d805808efca3Confidential
Table of contentsThis document has 277 pages.
Summary of changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
1 4 Handover Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2 Counters of Handover Measurement. . . . . . . . . . . . . . . . . . . . . . . . . . . 282.1 004000 / MSC I SUCCESS HO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 282.2 004001 / MSC I UNSUCCESS HO DUE LACK. . . . . . . . . . . . . . . . . . . 282.3 004002 / MSC I UNSUCCESS HO DUE CONN . . . . . . . . . . . . . . . . . . 292.4 004003 / MSC I UNSUCCESS HO DUE BSS PROBLEM. . . . . . . . . . . 302.5 004004 / MSC O SUCCESS HO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 302.6 004005 / MSC O GEN HO REQUIRED MESSAGES . . . . . . . . . . . . . . 312.7 004006 / MSC O UNSUCCESS HO DUE RETURN . . . . . . . . . . . . . . . 322.8 004007 / MSC O END OF HO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 332.9 004008 / MSC O END OF HO DUE BSS . . . . . . . . . . . . . . . . . . . . . . . 342.10 004009 / MSC O GEN HO COM MESSAGES . . . . . . . . . . . . . . . . . . . 342.11 004010 / BSC I SUCCESS HO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 352.12 004011 / BSC I UNSUCCESS HO DUE LACK . . . . . . . . . . . . . . . . . . . 362.13 004012 / BSC I UNSUCCESS HO DUE CONN . . . . . . . . . . . . . . . . . . 372.14 004013 / BSC I UNSUCCESS HO DUE BSS PROBLEM . . . . . . . . . . . 382.15 004014 / BSC O SUCCESS HO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 392.16 004015 / BSC O UNSUCCESS HO DUE RETURN . . . . . . . . . . . . . . . 402.17 004016 / BSC O END OF HO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 412.18 004017 / BSC O END OF HO DUE BSS. . . . . . . . . . . . . . . . . . . . . . . . 422.19 004018 / INT CELL SUCCESS HO . . . . . . . . . . . . . . . . . . . . . . . . . . . . 422.20 004019 / INT CELL UNSUCCESS HO DUE LACK . . . . . . . . . . . . . . . . 432.21 004020 / INT CELL UNSUCCESS HO DUE MOVE . . . . . . . . . . . . . . . 442.22 004021 / INT CELL UNSUCCESS HO DUE BSS PROBLEM. . . . . . . . 452.23 004022 / INT CELL UNSUCCESS HO DUE RETURN . . . . . . . . . . . . . 462.24 004023 / CAUSE UPLINK QUALITY . . . . . . . . . . . . . . . . . . . . . . . . . . . 462.25 004024 / CAUSE UPLINK LEVEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 472.26 004025 / CAUSE DOWNLINK QUALITY. . . . . . . . . . . . . . . . . . . . . . . . 472.27 004026 / CAUSE DOWNLINK LEVEL. . . . . . . . . . . . . . . . . . . . . . . . . . 482.28 004027 / CAUSE DISTANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 492.29 004028 / CAUSE RESPONSE TO MSC INVOCATION . . . . . . . . . . . . 492.30 004029 / CAUSE HIGH INT ON UPLINK . . . . . . . . . . . . . . . . . . . . . . . 502.31 004030 / CAUSE HIGH INT ON DOWNLINK . . . . . . . . . . . . . . . . . . . . 502.32 004031 / CAUSE UMBRELLA HO. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 512.33 004032 / CAUSE POWER BUDGET HO. . . . . . . . . . . . . . . . . . . . . . . . 522.34 004033 / CAUSE HO STARTED BY OMC . . . . . . . . . . . . . . . . . . . . . . 522.35 004034 / CAUSE HO STARTED BY CHANNEL ADM . . . . . . . . . . . . . 532.36 004035 / CAUSE HO STARTED BY TRAFFIC REASON . . . . . . . . . . . 532.37 004036 / INT CELL HO NOT ALLOWED. . . . . . . . . . . . . . . . . . . . . . . . 542.38 004037 / MSC O HO NOT ALLOWED. . . . . . . . . . . . . . . . . . . . . . . . . . 552.39 004038 / BSC O HO NOT ALLOWED . . . . . . . . . . . . . . . . . . . . . . . . . . 552.40 004039 / INT CELL CALL CLEAR DURING HO . . . . . . . . . . . . . . . . . . 56
4 DN9813636
4 Handover Measurement
Id:0900d805808efca3Confidential
2.41 004040 / MSC I CALL CLEAR DURING HO . . . . . . . . . . . . . . . . . . . . . 572.42 004041 / MSC O CALL CLEAR DURING HO. . . . . . . . . . . . . . . . . . . . . 572.43 004042 / BSC O CALL CLEAR DURING HO . . . . . . . . . . . . . . . . . . . . . 582.44 004043 / MSC I TCH TCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 592.45 004044 / MSC I SDCCH TCH. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 592.46 004045 / MSC I SDCCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 602.47 004046 / MSC I TCH TCH AT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 612.48 004047 / MSC I SDCCH TCH AT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 612.49 004048 / MSC I SDCCH AT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 622.50 004049 / MSC O TCH TCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 622.51 004050 / MSC O SDCCH TCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 632.52 004051 / MSC O SDCCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 642.53 004052 / MSC O TCH TCH AT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 642.54 004053 / MSC O SDCCH TCH AT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 652.55 004054 / MSC O SDCCH AT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 652.56 004055 / MSC O FAIL LACK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 662.57 004056 / BSC I TCH TCH. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 662.58 004057 / BSC I SDCCH TCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 672.59 004058 / BSC I SDCCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 682.60 004059 / BSC I TCH TCH AT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 682.61 004060 / BSC I SDCCH TCH AT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 692.62 004061 / BSC I SDCCH AT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 702.63 004062 / BSC I NONOPT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 702.64 004063 / BSC I NONOPT AT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 712.65 004064 / BSC O TCH TCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 712.66 004065 / BSC O SDCCH TCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 722.67 004066 / BSC O SDCCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 732.68 004067 / BSC O TCH TCH AT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 732.69 004068 / BSC O SDCCH TCH AT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 742.70 004069 / BSC O SDCCH AT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 752.71 004070 / BSC O NONOPT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 752.72 004071 / BSC O NONOPT AT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 762.73 004072 / BSC O FAIL LACK. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 772.74 004073 / CELL TCH TCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 772.75 004074 / CELL SDCCH TCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 782.76 004075 / CELL SDCCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 792.77 004076 / CELL TCH TCH AT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 792.78 004077 / CELL SDCCH TCH AT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 802.79 004078 / CELL SDCCH AT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 802.80 004079 / CAUSE DIR RETRY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 812.81 004080 / MSC I END OF HO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 812.82 004081 / BSC I END OF HO. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 822.83 004082 / BSC O MS REQ ENQ PROC . . . . . . . . . . . . . . . . . . . . . . . . . 832.84 004083 / BSC I DROP CALLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 842.85 004084 / BSC O DROP CALLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 852.86 004085 / CELL DROP CALLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 862.87 004086 / CAUSE PREEMPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
DN9813636 5
4 Handover Measurement
Id:0900d805808efca3Confidential
2.88 004087 / CAUSE FIELD DROP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 872.89 004088 / CAUSE LOW DISTANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 872.90 004089 / CAUSE BAD CI RATIO. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 882.91 004090 / CAUSE GOOD CI RATIO. . . . . . . . . . . . . . . . . . . . . . . . . . . . 892.92 004091 / HO DUE SLOW MOV MS. . . . . . . . . . . . . . . . . . . . . . . . . . . . 892.93 004092 / MSC I ATT SWITCH CIRC POOL . . . . . . . . . . . . . . . . . . . . . 902.94 004093 / MSC I SUCC SWITCH CIRC POOL. . . . . . . . . . . . . . . . . . . . 912.95 004094 / MSC O ATT SWITCH CIRC POOL . . . . . . . . . . . . . . . . . . . . 912.96 004095 / MSC O SUCC SWITCH CIRC POOL. . . . . . . . . . . . . . . . . . . 922.97 004096 / BSC O UNSUCC A INT CIRC TYPE . . . . . . . . . . . . . . . . . . . 932.98 004097 / BSC I UNSUCC A INT CIRC TYPE . . . . . . . . . . . . . . . . . . . . 942.99 004098 / INT UNSUCC A INT CIRC TYPE . . . . . . . . . . . . . . . . . . . . . . 942.100 004099 / HO ATT DUE SWITCH CIRC POOL . . . . . . . . . . . . . . . . . . . 952.101 004100 / MSC O ADJ CELL ID ERR . . . . . . . . . . . . . . . . . . . . . . . . . . . 962.102 004101 / MSC I UNSUCC DUE A IF CRC. . . . . . . . . . . . . . . . . . . . . . . 962.103 004102 / MSC O UNSUCC DUE A IF CRC. . . . . . . . . . . . . . . . . . . . . . 972.104 004103 / HO FROM NORMAL TO EXT AREA . . . . . . . . . . . . . . . . . . . 982.105 004104 / HO FROM EXT TO NORMAL AREA . . . . . . . . . . . . . . . . . . . 982.106 004105 / HO DUE TO MS SLOW SPEED. . . . . . . . . . . . . . . . . . . . . . . 992.107 004106 / HO DUE TO MS HIGH SPEED . . . . . . . . . . . . . . . . . . . . . . . 992.108 004107 / MSC O CALL DROP DURING HO . . . . . . . . . . . . . . . . . . . . 1002.109 004108 / MSC I CALL POSS DROP DURING HO . . . . . . . . . . . . . . . 1012.110 004109 / HO ATT DUE TO BAD RXLEV ON SUPER . . . . . . . . . . . . . 1022.111 004110 / HO ATT DUE TO GOOD RXLEV ON REGULAR. . . . . . . . . 1022.112 004111 / HO ATT DUE ERFD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1032.113 004112 / MSC O ATT FOR HSCSD . . . . . . . . . . . . . . . . . . . . . . . . . . 1032.114 004113 / MSC O SUCC FOR HSCSD. . . . . . . . . . . . . . . . . . . . . . . . . 1042.115 004114 / MSC I ATT FOR HSCSD . . . . . . . . . . . . . . . . . . . . . . . . . . . 1052.116 004115 / MSC I SUCC FOR HSCSD. . . . . . . . . . . . . . . . . . . . . . . . . . 1052.117 004116 / MSC I SUCC INC FOR HSCSD . . . . . . . . . . . . . . . . . . . . . . 1062.118 004117 / MSC I SUCC DEC FOR HSCSD . . . . . . . . . . . . . . . . . . . . . 1072.119 004118 / BSC O ATT FOR HSCSD. . . . . . . . . . . . . . . . . . . . . . . . . . . 1072.120 004119 / BSC O SUCC FOR HSCSD . . . . . . . . . . . . . . . . . . . . . . . . . 1082.121 004120 / BSC I ATT FOR HSCSD. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1092.122 004121 / BSC I SUCC FOR HSCSD . . . . . . . . . . . . . . . . . . . . . . . . . . 1092.123 004122 / BSC I SUCC INC FOR HSCSD . . . . . . . . . . . . . . . . . . . . . . 1102.124 004123 / BSC I SUCC DEC FOR HSCSD. . . . . . . . . . . . . . . . . . . . . . 1102.125 004124 / INTRA ATT FOR HSCSD . . . . . . . . . . . . . . . . . . . . . . . . . . . 1112.126 004125 / INTRA SUCC FOR HSCSD . . . . . . . . . . . . . . . . . . . . . . . . . 1122.127 004126 / INTRA SUCC INC FOR HSCSD. . . . . . . . . . . . . . . . . . . . . . 1122.128 004127 / INTRA SUCC DEC FOR HSCSD . . . . . . . . . . . . . . . . . . . . . 1132.129 004128 / HO ATT DUE TO DIRECT ACCESS . . . . . . . . . . . . . . . . . . 1132.130 004129 / HO ATT DUE TO DADLB . . . . . . . . . . . . . . . . . . . . . . . . . . . 1142.131 004130 / HO ATT DUE TO GPRS. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1152.132 004131 / INTRA CELL SUCCESS SDCCH HO BETWEEN BTSS . . . 1152.133 004132 / INTRA CELL SUCCESS TCH HO BETWEEN BTSS. . . . . . 1162.134 004133 / HO ATTEMPT INTER BAND SDCCH . . . . . . . . . . . . . . . . . 116
6 DN9813636
4 Handover Measurement
Id:0900d805808efca3Confidential
2.135 004134 / INTRA CELL SUCCESS SDCCH HO BETWEEN BANDS . . 1172.136 004135 / HO ATTEMPT INTER BAND TCH. . . . . . . . . . . . . . . . . . . . . 1182.137 004136 / INTRA CELL SUCCESS TCH HO BETWEEN BANDS. . . . . 1182.138 004137 / HO ATTEMPT INTER BTS TYPE SDCCH . . . . . . . . . . . . . . 1192.139 004138 / INTRA CELL SUCCESS SDCCH HO BETWEEN BTS TYPES .
1202.140 004139 / HO ATTEMPT INTER BTS TYPE TCH . . . . . . . . . . . . . . . . . 1202.141 004140 / INTRA CELL SUCCESS TCH HO BETWEEN BTS TYPES . 1212.142 004141 / HO ATT DUE TO HSCSD . . . . . . . . . . . . . . . . . . . . . . . . . . . 1222.143 004142 / HO ATT FOR AMR TO HR . . . . . . . . . . . . . . . . . . . . . . . . . . 1222.144 004143 / HO ATT FOR AMR TO FR . . . . . . . . . . . . . . . . . . . . . . . . . . 1232.145 004144 / MSC I TCH HO FROM WCDMA RAN ATTEMPT . . . . . . . . . 1232.146 004145 / MSC I WCDMA RAN HO ATTEMPT UNSUCC DUE LACK . 1242.147 004146 / MSC I WCDMA RAN HO ATTEMPT UNSUCC DUE BSS PROB-
LEM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1242.148 004147 / MSC I WCDMA RAN END OF HO . . . . . . . . . . . . . . . . . . . . 1252.149 004148 / MSC I UNSUCCESS HO WCDMA RAN DUE CONN . . . . . . 1262.150 004149 / MSC I HO WCDMA RAN TCH SUCCESS . . . . . . . . . . . . . . 1262.151 004150 / MSC O TCH HO TO WCDMA RAN ATTEMPT . . . . . . . . . . . 1272.152 004151 / MSC O HO TO WCDMA RAN NOT ALLOWED . . . . . . . . . . 1272.153 004152 / MSC O END OF HO TO WCDMA RAN DUE BSS . . . . . . . . 1282.154 004153 / MSC O GEN INTER SYSTEM TO WCDMA RAN HANDOVER
REQ MESSAGES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1282.155 004154 / MSC O GEN INTER SYSTEM TO WCDMA RAN HANDOVER
COM MESSAGES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1292.156 004155 / MSC O TO WCDMA RAN FAIL LACK. . . . . . . . . . . . . . . . . . 1302.157 004156 / MSC O END OF HO TO WCDMA RAN. . . . . . . . . . . . . . . . . 1302.158 004157 / MSC O CALL DROP DURING HO TO WCDMA RAN. . . . . . 1312.159 004158 / MSC O TO WCDMA RAN SUCCESS TCH HO . . . . . . . . . . 1322.160 004159 / SUCCESSFUL HO INTER BAND TCH . . . . . . . . . . . . . . . . . 1322.161 004160 / SUCCESSFUL HO INTER BTS TYPE TCH . . . . . . . . . . . . . 1332.162 004161 / UNSUCCESSFUL HO INTER BAND TCH . . . . . . . . . . . . . . 1342.163 004162 / UNSUCCESSFUL HO INTER BTS TYPE TCH. . . . . . . . . . . 1342.164 004163 / HO ATTEMPT INTER BAND DUE LEVEL . . . . . . . . . . . . . . 1352.165 004164 / UNSUCC HO INTER BAND DUE LEVEL . . . . . . . . . . . . . . . 1362.166 004165 / SUCC HO INTER BAND DUE LEVEL. . . . . . . . . . . . . . . . . . 1362.167 004166 / INTER SEGMENT SUCCESS SDCCH HO BETWEEN BANDS.
1372.168 004167 / INTER SEGMENT SUCCESS SDCCH HO BETWEEN BTS
TYPES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1382.169 004168 / INTER SEGMENT SUCCESS TCH HO BETWEEN BANDS 1382.170 004169 / INTER SEGMENT SUCCESS TCH HO BETWEEN BTS TYPES
1392.171 004170 / HO CAUSE DUE TO POOL SWITCHING . . . . . . . . . . . . . . . 1402.172 004171 / AMR UNPACKING HO ATTEMPT DUE TO RX LEVEL . . . . 1422.173 004172 / MSC I IURG TCH HO ATTEMPT . . . . . . . . . . . . . . . . . . . . . 1422.174 004173 / MSC I IURG TCH HO SUCCESS . . . . . . . . . . . . . . . . . . . . . 1432.175 004174 / MSC I HO FROM INTER PLMN INTRA GSM ATT . . . . . . . . 143
DN9813636 7
4 Handover Measurement
Id:0900d805808efca3Confidential
2.176 004175 / MSC I HO FROM INTER PLMN INTRA GSM SUCC . . . . . . 1442.177 004176 / MSC I HO FROM INTER PLMN INTRA GSM FAIL . . . . . . . 1442.178 004177 / MSC O HO FROM INTER PLMN INTRA GSM ATT. . . . . . . 1452.179 004178 / MSC O HO FROM INTER PLMN INTRA GSM SUCC . . . . . 1452.180 004179 / MSC O HO FROM INTER PLMN INTRA GSM FAIL . . . . . . 1462.181 004180 / HO ATTEMPT DUE TO ISHO . . . . . . . . . . . . . . . . . . . . . . . 1462.182 004181 / HO ATTEMPT DUE TO INTER SYSTEM DIRECT ACCESS 1472.183 004182 / MSC O SDCCH TCH HO TO WCDMA RAN ATTEMPT . . . 1482.184 004183 / MSC O SDCCH TCH TO WCDMA RAN SUCCESS HO . . . 1482.185 004184 / BSC I INTERNAL HO TO EXTERNAL . . . . . . . . . . . . . . . . . 1492.186 004185 / BSC O INTERNAL HO TO EXTERNAL . . . . . . . . . . . . . . . . 1502.187 004186 / MSC I INTERNAL HO TO EXTERNAL. . . . . . . . . . . . . . . . . 1502.188 004187 / MSC O INTERNAL HO TO EXTERNAL. . . . . . . . . . . . . . . . 1512.189 004188 / INTERNAL INTRA CELL HO TO EXTERNAL . . . . . . . . . . . 1512.190 004189 / MSC I UNSUCCESSFUL IURG HO DUE HO REQUEST DELAY
1522.191 004190 / DTM MS HO ATTEMPTS TO DTM CELL . . . . . . . . . . . . . . 1522.192 004191 / DTM MS HO SUCCEEDED TO DTM CELL . . . . . . . . . . . . . 1532.193 004192 / DTM MS HO ATTEMPTS TO NON DTM CELL . . . . . . . . . . 1532.194 004193 / DTM MS HO SUCCEEDED TO NON DTM CELL . . . . . . . . 1542.195 004194 / DTM CALL HO FROM DTM CELL SUCCEEDED . . . . . . . . 1542.196 004195 / DTM HO DUE LACK OF RESOURCES. . . . . . . . . . . . . . . . 1552.197 004196 / NON DTM BASED ISHO ATTEMPT . . . . . . . . . . . . . . . . . . 1562.198 004197 / NON DTM BASED ISHO SUCCESS . . . . . . . . . . . . . . . . . . 1562.199 004198 / DTM CALL HO ATTEMPTS TO DTM CELL. . . . . . . . . . . . . 1572.200 004199 / DTM CALL HO SUCCESS TO DTM CELL. . . . . . . . . . . . . . 1572.201 004200 / DTM CALL HO ATTEMPTS TO NON DTM CELL . . . . . . . . 1582.202 004201 / DTM CALL HO SUCCESS TO NON DTM CELL . . . . . . . . . 1592.203 004202 / BSC I INTERNAL HO TO EXTERNAL SUCCESSFUL . . . . 1592.204 004203 / BSC O INTERNAL HO TO EXTERNAL SUCCESSFUL . . . 1602.205 004204 / INTRA CELL TCH HO TO EXTERNAL SUCCESSFUL . . . . 1602.206 004205 / HO AMR FR TO HR SUCCESSFUL . . . . . . . . . . . . . . . . . . 1612.207 004206 / HO AMR HR TO FR SUCCESSFUL . . . . . . . . . . . . . . . . . . 1622.208 004207 / MSC I UNSUCCESSFUL HO FROM WCDMA RAN DUE POOL
SWITCHING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1622.209 004208 / MSC I SUCCESSFUL HO FROM WCDMA RAN POOL SWITCH-
ING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1632.210 004209 / IURG HO REQUEST AFTER MS ON TARGET CHANNEL. 1632.211 004210 / SPARE004210 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1642.212 004211 / SPARE004211 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1642.213 004212 / SPARE004212 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1652.214 004213 / SPARE004213 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1652.215 004214 / SPARE004214 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1662.216 004215 / HO ATTEMPT FROM LRTCH TO NORMAL AREA. . . . . . . 1662.217 004216 / HO FROM LRTCH TO NORMAL AREA SUCCESSFUL . . . 1672.218 004217 / HO ATTEMPT FROM LRTCH TO EXTENDED AREA. . . . . 1672.219 004218 / HO FROM LRTCH TO EXTENDED AREA SUCCESSFUL . 1682.220 004219 / HO ATTEMPT DUE TO IBHO TO GSM . . . . . . . . . . . . . . . . 168
8 DN9813636
4 Handover Measurement
Id:0900d805808efca3Confidential
2.221 004220 / HO ATTEMPT DUE TO IBHO TO UTRAN . . . . . . . . . . . . . . 1692.222 004221 / HO ATTEMPT DUE TO INT HO TO EXT . . . . . . . . . . . . . . . 1692.223 004222 / HO ATTEMPT DUE TO DTM MO CS TO PS . . . . . . . . . . . . 1702.224 004223 / HO ATTEMPT DUE TO DTM MT CS TO PS . . . . . . . . . . . . 1702.225 004224 / HO ATTEMPT DUE TO DTM MT PS TO PS. . . . . . . . . . . . . 1712.226 004225 / HO ATTEMPT DUE TO DTM PS TO CS. . . . . . . . . . . . . . . . 1712.227 004226 / HO ATTEMPT DUE TO DTM DISABLED . . . . . . . . . . . . . . . 1722.228 004227 / HO ATTEMPT DUE TO PCU QUAL CONTROL . . . . . . . . . . 1722.229 004228 / HO ATTEMPT DUE TO DTM NO PS RES AVAIL. . . . . . . . . 1732.230 004229 / HO ATTEMPT FROM EXTENDED TO SUPER EXTENDED
AREA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1732.231 004230 / HO FROM EXTENDED TO SUPER EXTENDED AREA SUC-
CESSFUL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1742.232 004231 / HO ATTEMPT FROM SUPER EXTENDED TO EXTENDED
AREA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1742.233 004232 / HO FROM SUPER EXTENDED TO EXTENDED AREA SUC-
CESSFUL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1752.234 004233 / HO ATTEMPT FROM LRTCH TO SUPER EXTENDED AREA .
1752.235 004234 / HO FROM LRTCH TO SUPER EXTENDED AREA SUCCESS-
FUL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1762.236 004235 / HO ATTEMPT FROM AMR HR TO DHR . . . . . . . . . . . . . . . 1762.237 004236 / HO ATTEMPT FROM AMR FR TO DHR. . . . . . . . . . . . . . . . 1772.238 004237 / HO FROM AMR HR TO DHR SUCCESSFUL. . . . . . . . . . . . 1772.239 004238 / HO FROM AMR FR TO DHR SUCCESSFUL . . . . . . . . . . . . 1782.240 004239 / INT CELL UNSUCCESS HO TO DHR DUE TO CSDAP MIS-
MATCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1782.241 004240 / HO ATTEMPT FROM DHR DUE TO RX QUALITY . . . . . . . 1792.242 004241 / HO ATTEMPT FROM DHR DUE TO UL RX LEVEL DIFFER-
ENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1802.243 004242 / HO FROM DHR DUE TO RX QUALITY SUCCESSFUL . . . . 1802.244 004243 / HO FROM DHR DUE TO UL RX LEVEL DIFFERENCE SUC-
CESSFUL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1812.245 004244 / BSS INTERNAL HANDOVER REQUIRED REQUESTS. . . . 1812.246 004245 / BSS INTERNAL HANDOVER COMMANDS . . . . . . . . . . . . . 1822.247 004246 / BSS INTERNAL HANDOVER SOURCE SUCCESSFUL . . . 1822.248 004247 / BSS INTERNAL HANDOVER REQUIRED REJECTIONS . . 1832.249 004248 / BSS INTERNAL HANDOVER SUCCESSFUL . . . . . . . . . . . 1842.250 004249 / BSS INTERNAL HANDOVER ENQUIRY . . . . . . . . . . . . . . . 1842.251 004250 / BSS INTERNAL HANDOVER ENQUIRY REJECTIONS . . . 1852.252 004251 / HO ATTEMPT FROM DHR DUE TO RX LEVEL. . . . . . . . . . 1852.253 004252 / HO FROM DHR DUE TO RX LEVEL SUCCESSFUL . . . . . . 1862.254 004253 / SPARE004253. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1862.255 004254 / SPARE004254. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1872.256 004255 / SPARE004255. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1872.257 004256 / SPARE004256. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1882.258 004257 / SPARE004257. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1882.259 004258 / SPARE004258. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
DN9813636 9
4 Handover Measurement
Id:0900d805808efca3Confidential
2.260 004259 / HO ATTEMPT FROM AMR FR TO DFR IN 8K TRAU MODE . . 189
2.261 004260 / HO FROM AMR FR TO DFR IN 8K TRAU MODE SUCCESSFUL190
2.262 004261 / HO ATTEMPT FROM AMR FR TO DFR . . . . . . . . . . . . . . . 1902.263 004262 / HO FROM AMR FR TO DFR SUCCESSFUL. . . . . . . . . . . . 1912.264 004263 / INT CELL UNSUCCESS HO TO DFR DUE TO CSDAP MIS-
MATCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1912.265 004264 / HO ATTEMPT FROM DFR DUE TO RX QUALITY . . . . . . . 1922.266 004265 / HO ATTEMPT FROM DFR DUE TO UL RX LEVEL DIFFER-
ENCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1922.267 004266 / HO ATTEMPT FROM DFR DUE TO RX LEVEL . . . . . . . . . 1932.268 004267 / HO FROM DFR DUE TO RX QUALITY SUCCESSFUL . . . 1932.269 004268 / HO FROM DFR DUE TO UL RX LEVEL DIFFERENCE SUC-
CESSFUL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1942.270 004269 / HO FROM DFR DUE TO RX LEVEL SUCCESSFUL. . . . . . 1952.271 004270 / HO ATTEMPT DUE TO POWER BALANCING . . . . . . . . . . 195
3 Signalling charts of Handover Measurement . . . . . . . . . . . . . . . . . . . . 197
4 Signalling charts of Dual Transfer Mode . . . . . . . . . . . . . . . . . . . . . . . 257
10 DN9813636
4 Handover Measurement
Id:0900d805808efca3Confidential
List of figuresFigure 1 Successful internal intra-cell TCH to TCH handover . . . . . . . . . . . . . . 197Figure 2 Successful internal inter-cell TCH to TCH handover . . . . . . . . . . . . . . 198Figure 3 Successful external TCH to TCH handover, source BSC. . . . . . . . . . . 199Figure 4 Successful external TCH to TCH handover, target BSC . . . . . . . . . . . 200Figure 5 Successful internal intra-cell SDCCH to SDCCH handover . . . . . . . . . 201Figure 6 Successful internal inter-cell SDCCH to SDCCH handover . . . . . . . . . 202Figure 7 Successful external SDCCH to SDCCH handover, source BSC . . . . . 203Figure 8 Successful external SDCCH to SDCCH handover, target BSC . . . . . . 204Figure 9 Internal intra-cell directed retry including BSS6114: TCH assignment to the
super-reuse TRX in IUO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205Figure 10 Internal inter-cell directed retry, including BSS6114 TCH assignment to the
super-reuse TRX in IUO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206Figure 11 External directed retry, source BSC . . . . . . . . . . . . . . . . . . . . . . . . . . . 207Figure 12 External directed retry, target BSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208Figure 13 Unsuccessful internal intra-cell TCH to TCH handover due to a lack of re-
sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209Figure 14 Unsuccessful internal inter-cell TCH to TCH handover due to a lack of re-
sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209Figure 15 Unsuccessful external TCH to TCH handover due to a lack of resources,
source BSC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210Figure 16 Unsuccessful external TCH to TCH handover due to a lack of resources,
target BSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210Figure 17 Unsuccessful internal intra-cell TCH to TCH handover because a handover
is not allowed at this phase of the call . . . . . . . . . . . . . . . . . . . . . . . . . 211Figure 18 Unsuccessful internal inter-cell TCH to TCH handover because a handover
is not allowed at this phase of the call . . . . . . . . . . . . . . . . . . . . . . . . . 212Figure 19 Unsuccessful external TCH to TCH handover because a handover is not
allowed, source BSC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212Figure 20 Unsuccessful internal intra-cell TCH to TCH handover due to a failure in the
activation of a new channel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213Figure 21 Unsuccessful internal inter-cell TCH to TCH handover due to a failure in the
activation of a new channel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213Figure 22 Unsuccessful external TCH to TCH handover due to a failure in the activa-
tion of a new channel, target BSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214Figure 23 Unsuccessful internal intra-cell TCH to TCH handover due to losing the MS
during handover. The GSM timer T3107 expires. . . . . . . . . . . . . . . . . . 215Figure 24 Unsuccessful internal inter-cell TCH to TCH handover due to losing the MS
during handover. The GSM timer T3103 expires. . . . . . . . . . . . . . . . . . 216Figure 25 Unsuccessful internal intra-cell TCH to TCH handover due to MS returning
to the old channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217Figure 26 Unsuccessful internal inter-cell TCH to TCH handover due to MS returning
to the old channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218Figure 27 Unsuccessful external TCH to TCH handover due to MS returning to the
old channel, source BSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219Figure 28 Unsuccessful external TCH to TCH handover due to MS returning to the
old channel, target BSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220Figure 29 Unsuccessful internal intra-cell TCH to TCH handover due to call clearing
during handover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221
DN9813636 11
4 Handover Measurement
Id:0900d805808efca3Confidential
Figure 30 Unsuccessful internal inter-cell TCH to TCH handover due to call clearing during handover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222
Figure 31 Unsuccessful external TCH to TCH handover due to call clearing during handover, source BSC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223
Figure 32 Unsuccessful internal intra-cell TCH to TCH handover because no radio re-sources are available due to switch_crc_pool . . . . . . . . . . . . . . . . . . . 224
Figure 33 Unsuccessful internal inter-cell TCH to TCH handover because no radio re-sources are available due to switch_crc_pool . . . . . . . . . . . . . . . . . . . 224
Figure 34 Unsuccessful external TCH to TCH handover because no radio resources are available due to switch_crc_pool, target BSC . . . . . . . . . . . . . . . . 225
Figure 35 Internal intra-cell handover change to external due to circuit pool switching, source side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226
Figure 36 Internal intra-cell handover change to external due to circuit pool switching, target side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227
Figure 37 Successful handover type reselection from an internal inter-cell TCH to TCH handover to an external handover due to switching the circuit pool . 228
Figure 38 Internal inter-cell handover change to external handover due to circuit pool switching, target-cell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229
Figure 39 Unsuccessful external TCH to TCH handover because the MSC rejects the handover due to various causes, source BSC. . . . . . . . . . . . . . . . . . . 230
Figure 40 Unsuccessful external TCH to TCH handover due to GSM timer T8 expiry, source BSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231
Figure 41 Unsuccessful external TCH to TCH handover due to adjacent cell error, source BSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232
Figure 42 Unsuccessful internal intra-cell TCH to TCH handover, caused by an inter-nal timer expiry in the BSC or a CONNECTION_FAILURE, ERROR_INDICATION, or ERROR_REPORT message coming to the tar-get channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233
Figure 43 Unsuccessful internal inter-cell TCH to TCH handover due to a radio link failure during handover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
Figure 44 Unsuccessful internal inter-cell TCH to TCH handover caused by internal timer expiry or a failure in the connection of a bi-directional speech path . 235
Figure 45 Unsuccessful external TCH to TCH handover due to a radio link failure dur-ing handover, source BSC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236
Figure 46 Unsuccessful external TCH to TCH handover due to a radio link failure dur-ing handover, target BSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237
Figure 47 Unsuccessful external TCH or TCH handover, source BSC . . . . . . . . 238Figure 48 Unsuccessful external TCH to TCH handover, target BSC . . . . . . . . . 239Figure 49 Successful internal intra-cell TCH TCH HSCSD handover from two to one
channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240Figure 50 Successful internal intra-cell TCH TCH HSCSD handover from one to three
channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241Figure 51 Successful internal inter-cell TCH TCH HSCSD handover from three to one
channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242Figure 52 Successful internal inter-cell TCH TCH HSCSD handover from two to three
channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243Figure 53 Successful external TCH TCH HSCSD handover from two to two channels,
source BSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244Figure 54 Successful external TCH TCH HSCSD handover from four to one channel,
12 DN9813636
4 Handover Measurement
Id:0900d805808efca3Confidential
target BSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245Figure 55 Successful external TCH TCH HSCSD handover from one to two channels,
target BSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246Figure 56 Internal intra-cell direct access from regular DCCH to a super-reuse TRX
247Figure 57 Internal inter-cell direct access from the TCH on a child TRX to the TCH on
a parent TRX. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248Figure 58 Handover attempt due to a BSC controlled TRHO . . . . . . . . . . . . . . . . 249Figure 59 Handover attempt due to DADL/B . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249Figure 60 AMR packing or unpacking handover . . . . . . . . . . . . . . . . . . . . . . . . . . 250Figure 61 Circuit pool switch during inter-system handover, target-BSC . . . . . . . 251Figure 62 Circuit pool switch during external handover, target-BSC . . . . . . . . . . 252Figure 63 BSS Internal Handover with MSC Support - Local Handover. . . . . . . . 253Figure 64 BSS Internal Handover with MSC Support - Distant Handover . . . . . . 254Figure 65 Intra BSC HO; interface type change from AoIP to AoTDM; TC in MGW. .
255Figure 66 MO DTM call establishment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 257Figure 67 MT DTM call establishment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258Figure 68 DTM call reallocation; too high CS connection interference . . . . . . . . . 259Figure 69 DTM call reallocation; inadequate PS connection quality . . . . . . . . . . . 260Figure 70 DTM call; internal inter-cell handover; CS connection power budget . . 261Figure 71 DTM call; internal inter-cell handover; lack of resources in the PS territory
262Figure 72 DTM call; external handover, source BSC . . . . . . . . . . . . . . . . . . . . . . 263Figure 73 DTM call; external handover, target BSC . . . . . . . . . . . . . . . . . . . . . . . 264Figure 74 DTM call release initiated by the MS . . . . . . . . . . . . . . . . . . . . . . . . . . 265Figure 75 DTM call release; packet data transfer end . . . . . . . . . . . . . . . . . . . . . 266Figure 76 DTM REQUEST rejected when IMSI data not available. . . . . . . . . . . . 267Figure 77 Unsuccessful MO DTM; activation of a CS TCH in the PS territory fails, tim-
er expires while waiting for CHANNEL ACTIVATION ACK . . . . . . . . . 268Figure 78 Unsuccessful MT DTM; activation of a CS TCH in the PS territory fails, tim-
er expires while waiting for CHANNEL ACTIVATION ACK . . . . . . . . . 269Figure 79 Unsuccessful MT DTM; DTM ASSIGNMENT FAILURE received . . . . 270Figure 80 Timer T3107 expires while waiting for ASSIGNMENT COMPLETE. . . 271Figure 81 DTM call reallocation failure; DTM ASSIGNMENT FAILURE received 272Figure 82 DTM CS connection drops after ASSIGNMENT COMPLETE; CONNEC-
TION FAILURE received. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273Figure 83 DTM CS connection drops after ASSIGNMENT COMPLETE; RELEASE
INDICATION not received. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274Figure 84 Unsuccessful DTM call reallocation; timer T3107 expires while waiting for
ASSIGNMENT COMPLETE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275Figure 85 DTM TBF assignment failure; UL RLC block not received . . . . . . . . . . 276Figure 86 DTM-capable MS paging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277
DN9813636 13
4 Handover Measurement
Id:0900d805808efca3Confidential
List of tablesTable 1 Measurement description of Handover Measurement . . . . . . . . . . . . . 16Table 2 MSC incoming counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Table 3 MSC outgoing counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Table 4 BSC incoming counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Table 5 BSC outgoing counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Table 6 BSC Intra-cell handover counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Table 7 Intra-segment handover counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Table 8 Handover cause counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Table 9 Non-relevant counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23Table 10 Inter-System Handover counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23Table 11 Common BCCH Control for GSM counters . . . . . . . . . . . . . . . . . . . . . 24Table 12 Multi BCF Control counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24Table 13 Inter PLMN Handover counters, incoming handovers . . . . . . . . . . . . . 24Table 14 Inter PLMN Handover counters, outgoing handovers . . . . . . . . . . . . . . 24Table 15 GSM-WCDMA Interworking Enhancement counters . . . . . . . . . . . . . . 25Table 16 DTM counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25Table 17 BSS Internal Handover Counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25Table 18 Spare counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
14 DN9813636
4 Handover Measurement
Id:0900d805808efca3Confidential
DN9813636 15
4 Handover Measurement Summary of changes
Id:0900d805808efcadConfidential
Summary of changesChanges between document issues are cumulative. Therefore, the latest document issue contains all changes made to previous issues.
Changes made between issues 13-2 and 13-1New counter 004270 related to BSS21507: Flexible MCPA TX Power Pooling has been added.
The Updated field for the counters 004244, 004245, 004246, 004247, 004248, 004249 and 004250 related to feature BSS21341: A over IP have been modified.
Name of the counter 004246 has been changed.
In the section Signalling charts of Handover Measurement , the counter 004246 is added in Figures 63, 64 and 65
Changes made between issues 13-1 and 13-0New counters 004259 and 004260 related to BSS21325: 8K TRAU for OSC AMR FR have been added
New counters 004261, 004262, 004263, 004264, 004265, 004266, 004267, 004268 and 004269 related to BSS21534: OSC Full Rate with SAIC MS have been added
The Updated field is modified for the counters 004041, 004080, and 004147 related to feature BSS21530 mcBSC.
Changes made between issues 13-0 and 12-2New counters 004235, 004236, 004237, 004238, 004239, 004240, 004241, 004242, 004243, 004251 and 004252 are introduced due to the feature BSS21309 : Orthogonal Sub Channel with SAIC MS.
New counters 004244, 004245, 004246, 004247, 004248, 004249 and 004250 are intro-duced due to the feature BSS21341: A over IP.
The counters 004229, 004230, 004231, 004232, 004233 and 004234 are added to the table BSC Intra-cell handover counters.
Spare counter 004171 has made official due to the feature BSS21483: Improved AMR packing and unpacking.
Spare counters 004172, 004173, 004189 and 004209 have made official due to the feature BSS21528: ISHO acceleration via Iur-g.
New spare counters 004253, 004254, 004255, 004256, 004257 and 004258 are intro-duced for future use.
New signalling charts added in section Signalling charts of Handover Measurement: Figures 63, 64 and 65.
16 DN9813636
4 Handover Measurement
Id:0900d805808b97c4Confidential
4 Handover Measurement
1 4 Handover MeasurementThe handover measurement registers information about the number of handovers (HO) controlled by the mobile switching centre (MSC) or the base station controller (BSC). The recorded items of data comprise the number of the incoming, outgoing, or intra-cell HOs, and the number of successful and unsuccessful attempts, seizures, and HOs. The HOs are sorted according to direction, where appropriate. This measurement type collects one set of results for each BTS. Signalling charts are drawn with the accuracy of message interface.
Measurement description
Counters of Handover Measurement
MeasurementMeasurement ID Measurement abbreviation
Handover Measurement4HO
Product BSC
Product software release S1
Target name BTS + Coverage Area
Table 1 Measurement description of Handover Measurement
Counter Counter number
MSC I success HO 004000
MSC I unsuccessful HO due lack 004001
MSC I unsuccessful HO due conn 004002
MSC I unsuccessful HO due BSS problem 004003
MSC I TCH TCH 004043
MSC I SDCCH TCH 004044
MSC I SDCCH 004045
MSC I TCH TCH attempt 004046
MSC I SDCCH TCH attempt 004047
MSC I SDCCH attempt 004048
MSC I end of HO 004080
MSC I att switch circuit pool 004092
MSC I success switch circuit pool 004093
MSC I unsuccessful due A interface circuit 004101
MSC I call possible dropped during HO 004108
MSC I attempt for HSCSD 004114
MSC I success for HSCSD 004115
MSC I success increased for HSCSD 004116
Table 2 MSC incoming counters
DN9813636 17
4 Handover Measurement 4 Handover Measurement
Id:0900d805808b97c4Confidential
MSC I success decreased for HSCSD 004117
MSC I IURG TCH HO ATTEMPT 004172
MSC I IURG TCH HO SUCCESS 004173
MSC I internal HO to external 004186
Counter Counter number
Table 2 MSC incoming counters (Cont.)
Counter Counter number
MSC O success HO 004004
MSC O generated HO required messages 004005
MSC O unsuccessful HO due return 004006
MSC O end of HO 004007
MSC O end of HO due BSS 004008
MSC O generated HO command messages 004009
MSC O HO not allowed 004037
MSC O call clear during HO 004041
MSC O TCH TCH 004049
MSC O SDCCH TCH 004050
MSC O SDCCH 004051
MSC O TCH TCH attempt 004052
MSC O SDCCH TCH attempt 004053
MSC O SDCCH attempt 004054
MSC O fail lack 004055
MSC O attempt switch circuit pool 004094
MSC O success switch circuit pool 004095
MSC O adjacent cell identification error 004100
MSC O unsuccessful due a if crc 004102
MSC O call dropped during HO 004107
MSC O attempt for HSCSD 004112
MSC O success for HSCSD 004113
MSC O internal HO to external 004187
Table 3 MSC outgoing counters
Counter Counter number
BSC I success HO 004010
BSC I unsuccessful HO due lack 004011
Table 4 BSC incoming counters
18 DN9813636
4 Handover Measurement
Id:0900d805808b97c4Confidential
4 Handover Measurement
BSC I unsuccessful HO due conn 004012
BSC I unsuccessful HO due BSS problem 004013
BSC I TCH TCH 004056
BSC I SDCCH TCH 004057
BSC I SDCCH 004058
BSC I TCH TCH attempt 004059
BSC I SDCCH TCH attempt 004060
BSC I SDCCH attempt 004061
BSC I nonopt 004062
BSC I nonopt attempt 004063
BSC I end of HO 004081
BSC I dropped calls 004083
BSC I unsuccessful due A interface circuit type 004097
BSC I attempt for HSCSD 004120
BSC I success for HSCSD 004121
BSC I success increased for HSCSD 004122
BSC I success decreased for HSCSD 004123
BSC I internal HO to external 004184
BSC I internal HO to external successful 004202
Counter Counter number
Table 4 BSC incoming counters (Cont.)
Counter Counter number
BSC O success HO 004014
BSC O unsuccessful HO due return 004015
BSC O end of HO 004016
BSC O end of HO due BSS 004017
BSC O HO not allowed 004038
BSC O call clear during HO 004042
BSC O TCH TCH 004064
BSC O SDCCH TCH 004065
BSC O SDCCH 004066
BSC O TCH TCH attempt 004067
BSC O SDCCH TCH attempt 004068
BSC O SDCCH attempt 004069
BSC O nonopt 004070
BSC O nonopt attempt 004071
Table 5 BSC outgoing counters
DN9813636 19
4 Handover Measurement 4 Handover Measurement
Id:0900d805808b97c4Confidential
BSC O fail lack 004072
BSC O dropped calls 004084
BSC O unsuccessful A interface circuit type 004096
BSC O attempt for HSCSD 004118
BSC O success for HSCSD 004119
BSC O internal HO to external 004185
BSC O internal HO to external successful 004203
Counter Counter number
Table 5 BSC outgoing counters (Cont.)
Counter Counter number
Intra-cell success HO 004018
Intra-cell unsuccessful HO due lack 004019
Intra-cell unsuccessful HO due move 004020
Intra-cell unsuccessful HO due BSS problem 004021
Intra-cell unsuccessful HO due return 004022
Intra-cell HO not allowed 004036
Intra-cell call cleared during HO 004039
Cell TCH TCH 004073
Cell SDCCH TCH 004074
Cell SDCCH 004075
Cell TCH TCH attempt 004076
Cell SDCCH TCH attempt 004077
Cell SDCCH attempt 004078
Cell dropped calls 004085
Intra-cell unsuccessful A interface circuit type 004098
Intra-cell attempt for HSCSD 004124
Intra-cell success for HSCSD 004125
Intra-cell success increased for HSCSD 004126
Intra-cell success decreased for HSCSD 004127
Internal intra cell HO to external 004188
Intra-cell TCH HO to external successful 004204
HO AMR FR to HR successful 004205
HO AMR HR to FR successful 004206
HO from LRTCH TO normal area successful 004216
HO from LRTCH to extended area successful 004218
Table 6 BSC Intra-cell handover counters
20 DN9813636
4 Handover Measurement
Id:0900d805808b97c4Confidential
4 Handover Measurement
HO FROM EXTENDED TO SUPER EXTENDED AREA SUCCESSFUL
004230
HO FROM SUPER EXTENDED TO EXTENDED AREA SUCCESSFUL
004232
HO FROM LRTCH TO SUPER EXTENDED AREA SUCCESSFUL
004234
HO ATTEMPT FROM AMR HR TO DHR 004235
HO FROM AMR HR TO DHR SUCCESSFUL 004237
HO FROM AMR FR TO DHR SUCCESSFUL 004238
INT CELL UNSUCCESS HO TO DHR DUE TO CSDAP
004239
HO FROM DHR DUE TO RX QUALITY SUCCESS-FUL
004242
HO FROM DHR DUE TO UL RX LEVEL DIFFER-ENCE SUCCESSFUL
004243
HO FROM DHR DUE TO RX LEVEL SUCCESSFUL 004252
HO ATTEMPT FROM AMR FR TO DFR IN 8K TRAU MODE
004259
HO FROM AMR FR TO DFR IN 8K TRAU MODE SUCCESSFUL
004260
HO ATTEMPT FROM AMR FR TO DFR 004261
HO FROM AMR FR TO DFR SUCCESSFUL 004262
INT CELL UNSUCCESS HO TO DFR DUE TO CSDAP MISMATCH
004263
HO FROM DFR DUE TO RX QUALITY SUCCESSFUL 004267
HO FROM DFR DUE TO UL RX LEVEL DIFFERENCE SUCCESSFUL
004268
Counter Counter number
Table 6 BSC Intra-cell handover counters (Cont.)
Counter Counter number
Successful SDCCH-SDCCH HO between BTSs within a segment
004131
Successful TCH-TCH HO between BTSs within a segment
004132
Inter band successful SDCCH-SDCCH HO between BTSs within a segment
004134
Inter band successful TCH-TCH HO between BTSs within a segment
004136
Inter BTS-type successful SDCCH-SDCCH HO within a segment
004138
Table 7 Intra-segment handover counters
DN9813636 21
4 Handover Measurement 4 Handover Measurement
Id:0900d805808b97c4Confidential
Inter BTS-type successful TCH-TCH HO within a segment
004140
Counter Counter number
Table 7 Intra-segment handover counters (Cont.)
Counter Counter number
Cause uplink quality 004023
Cause uplink level 004024
Cause downlink quality 004025
Cause downlink level 004026
Cause distance 004027
Cause response to MSC invocation 004028
Cause high interference on uplink 004029
Cause high interference on downlink 004030
Cause umbrella HO 004031
Cause power budget HO 004032
Cause HO started by OMC 004033
Cause HO started by traffic reason 004035
Cause directed retry 004079
Cause pre-emption 004086
Cause field drop 004087
Cause low distance 004088
Cause bad C/I ratio 004089
Cause good C/I ratio 004090
HO due slow moving MS 004091
HO attempt due switch circuit pool 004099
HO from normal to extended area 004103
HO from extended to normal area 004104
HO due to MS slow speed 004105
HO due to MS high speed 004106
HO attempt due to bad RX level on super 004109
HO attempt due to good RX level on regular 004110
HO attempt due ERFD 004111
HO attempt due to direct access 004128
HO attempt due DADLB 004129
HO attempt due to GPRS 004130
Table 8 Handover cause counters
22 DN9813636
4 Handover Measurement
Id:0900d805808b97c4Confidential
4 Handover Measurement
Inter band attempted SDCCH-SDCCH HO between BTSs within a segment
004133
Inter band attempted TCH-TCH HO between BTSs within a segment
004135
Inter BTS-type attempted SDCCH-SDCCH HO within a segment
004137
Inter BTS-type attempted TCH-TCH HO within a segment
004139
Intra cell HO attempts due to HSCSD traffic 004141
HO attempts due to channel rate change from AMR FR to AMR HR
004142
HO attempts due to channel rate change from AMR HR to AMR FR
004143
Inter segment success TCH HO between bands 004168
HO cause due to pool switching 004170
AMR UNPACKING HO ATTEMPT DUE TO RX LEVEL 004171
HO attempts due to ISHO 004180
HO attempts due to inter-system direct access 004181
HO attempt from LRTCH to normal area 004215
HO attempt from LRTCH to extended area 004217
HO attempt due to IBHO to GSM 004219
HO attempt due to IBHO to UTRAN 004220
HO attempt due to INT HO to EXT 004221
HO attempt due to DTM MO CS to PS 004222
HO attempt due to DTM MT CS to PS 004223
HO attempt due to DTM MT PS to PS 004224
HO attempt due to DTM PS to CS 004225
HO attempt due to DTM DISABLED 004226
HO attempt due to PCU QUAL CONTROL 004227
HO attempt due to DTM NO PS RES AVAIL 004228
HO ATTEMPT FROM EXTENDED TO SUPER EXTENDED AREA
004229
HO ATTEMPT FROM SUPER EXTENDED TO EXTENDED AREA
004231
HO ATTEMPT FROM LRTCH TO SUPER EXTENDED AREA
004233
HO ATTEMPT FROM AMR FR TO DHR 004236
HO ATTEMPT FROM DHR DUE TO RX QUALITY 004240
HO ATTEMPT FROM DHR DUE TO UL RX LEVEL DIFFERENCE
004241
Counter Counter number
Table 8 Handover cause counters (Cont.)
DN9813636 23
4 Handover Measurement 4 Handover Measurement
Id:0900d805808b97c4Confidential
HO ATTEMPT FROM DHR DUE TO RX LEVEL 004251
HO ATTEMPT FROM DFR DUE TO RX QUALITY 004264
HO ATTEMPT FROM DFR DUE TO UL RX LEVEL DIFFERENCE
004265
HO ATTEMPT FROM DFR DUE TO RX LEVEL 004266
HO FROM DFR DUE TO RX LEVEL SUCCESSFUL 004269
HO ATTEMPT DUE TO POWER BALANCING 004270
Counter Counter number
Table 8 Handover cause counters (Cont.)
Counter Counter number
Cause HO started by channel administration 004034
MSC I call clear during HO 004040
BSC O MS required enquiry proc 004082
Table 9 Non-relevant counters
Counter Counter number
MSC I TCH HO from WCDMA RAN attempt 004144
MSC I WCDMA RAN TCH HO attempt unsucc due lack
004145
MSC I WCDMA RAN HO attempt unsucc due BSS problem
004146
MSC I WCDMA RAN end of HO 004147
MSC I unsuccess HO WCDMA RAN due conn 004148
MSC I HO WCDMA RAN TCH success 004149
MSC O TCH HO to WCDMA RAN attempt 004150
MSC O HO to WCDMA RAN not allowed 004151
MSC O end of HO to WCDMA RAN due BSS 004152
MSC O gen inter system to WCDMA RAN handover req messages
004153
MSC O gen inter system to WCDMA RAN handover com messages
004154
MSC O to WCDMA RAN fail lack 004155
MSC O end of HO to WCDMA RAN 004156
MSC O call drop during HO to WCDMA RAN 004157
MSC O to WCDMA RAN success TCH HO 004158
MSC I UNSUCCESSFUL IURG HO DUE HO REQUEST DELAY
004189
Table 10 Inter-System Handover counters
24 DN9813636
4 Handover Measurement
Id:0900d805808b97c4Confidential
4 Handover Measurement
MSC I unsuccessful HO from WCDMA RAN due pool switching
004207
MSC I successful HO from WCDMA RAN pool switch-ing
004208
IURG HO REQUEST AFTER MS ON TARGET CHANNEL
004209
Counter Counter number
Table 10 Inter-System Handover counters (Cont.)
Counter Counter number
Successful HO inter band TCH 004159
Unsuccessful HO inter band TCH 004161
HO attempt inter band due level 004163
Unsucc HO inter band due level 004164
Succ HO inter band due level 004165
Inter segment success SDCCH HO between bands 004166
Table 11 Common BCCH Control for GSM counters
Counter Counter number
Successful HO inter BTS type TCH 004160
Unsuccessful HO inter BTS type TCH 004162
Inter segment success SDCCH HO between BTS types
004167
Inter segment success TCH HO between BTS types 004169
Table 12 Multi BCF Control counters
Counter Counter number
Incoming MSC HO attempts from inter-PLMN intra- GSM
004174
Incoming successful MSC HO from inter-PLMN intra- GSM
004175
Incoming failed MSC HO from inter-PLMN intra-GSM 004176
Table 13 Inter PLMN Handover counters, incoming handovers
Counter Counter number
Outgoing MSC HO attempts from inter-PLMN intra-GSM
004177
Table 14 Inter PLMN Handover counters, outgoing handovers
DN9813636 25
4 Handover Measurement 4 Handover Measurement
Id:0900d805808b97c4Confidential
Outgoing successful MSC HO from inter-PLMN intra-GSM
004178
Outgoing failed MSC HO from inter-PLMN intra-GSM 004179
Counter Counter number
Table 14 Inter PLMN Handover counters, outgoing handovers (Cont.)
Counter Counter number
Outgoing SDCCH-TCH handover attempts to WCDMA RAN controlled by MSC
004182
Successful outgoing SDCCH-TCH handovers to WCDMA RAN controlled by MSC
004183
Table 15 GSM-WCDMA Interworking Enhancement counters
Counter Counter number
DTM MS HO ATTEMPTS TO DTM CELL 004190
DTM MS HO SUCCEEDED TO DTM CELL 004191
DTM MS HO ATTEMPTS TO NON DTM CELL 004192
DTM MS HO SUCCEEDED TO NON DTM CELL 004193
DTM CALL HO FROM DTM CELL SUCCEEDED 004194
DTM HO DUE LACK OF RESOURCES 004195
NON DTM BASED ISHO ATTEMPT 004196
NON DTM BASED ISHO SUCCESS 004197
DTM CALL HO ATTEMPTS TO DTM CELL 004198
DTM CALL HO SUCCESS TO DTM CELL 004199
DTM CALL HO ATTEMPTS TO NON DTM CELL 004200
DTM CALL HO SUCCESS TO NON DTM CELL 004201
Table 16 DTM counters
Counter Counter Number
BSS INTERNAL HANDOVER REQUIRED REQUESTS
004244
BSS INTERNAL HANDOVER COMMANDS 004245
BSS INTERNAL HANDOVER SOURCE SUC-CESSFUL
004246
BSS INTERNAL HANDOVER REQUIRED REJECTIONS
004247
BSS INTERNAL HANDOVER SUCCESSFUL 004248
Table 17 BSS Internal Handover Counters
26 DN9813636
4 Handover Measurement
Id:0900d805808b97c4Confidential
4 Handover Measurement
Related topics
• Counters of Handover Measurement • Signalling charts of Handover Measurement • Signalling charts of Dual Transfer Mode
Instructions
• BSC Statistics Administration
For information on using this measurement to test the activation of related software, see the testing instructions in:
• Activating and Testing BSS21274: Long Reach TSL (Flexi EDGE BTS)
Reference
• BSC Measurement Counters Displaying Program (FOXMEA) • Performance Measurements
Descriptions
• Advanced Multilayer Handling • Common BCCH Control in BSC • Direct Access to Desired Layer/Band • Dual Transfer Mode in BSC • Enhanced Speech Codecs: AMR and EFR • Extended Cell Range • GPRS/EDGE System Feature Description • GPRS in BSC • GSM-WCDMA Interworking • Handover Support for Coverage Enhancements • HSCSD and 14.4 kbit/s Data Services in BSC • Intelligent Underlay-Overlay
BSS INTERNAL HANDOVER ENQUIRY 004249
BSS INTERNAL HANDOVER ENQUIRY REJECTIONS
004250
Counter Counter Number
Table 17 BSS Internal Handover Counters (Cont.)
Counter Counter Number
Spare 004253
Spare 004254
Spare 004255
Spare 004256
Spare 004257
Spare 004258
Table 18 Spare counters
DN9813636 27
4 Handover Measurement 4 Handover Measurement
Id:0900d805808b97c4Confidential
• Multi BCF Control in BSC • Support of Cell Global Identity • OSC Full Rate with SAIC MS • 8K TRAU FOR OSC AMR FR
28 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2 Counters of Handover Measurement
2.1 004000 / MSC I SUCCESS HO
2.2 004001 / MSC I UNSUCCESS HO DUE LACK
Counter ID: 004000 Network element name: MSC I SUCCESS HO
Version: 4.0 NetAct name: MSC_I_SUCC_HO
Description: Number of successful incoming HOs controlled by the MSC.
Dependencies: When one of the counters 004043, 004044 or 004045 is updated. This counter represents their sum.
Updated: When the HO (SDCCH to SDCCH, SDCCH to TCH or TCH to TCH) is com-pleted.
See figures:- Successful external TCH to TCH handover, target BSC- Successful external SDCCH to SDCCH handover, target BSC- External directed retry, target BSC- Successful external TCH TCH HSCSD handover from four to one channel, target BSC- Successful external TCH TCH HSCSD handover from one to two channels, target BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004043: MSC I TCH TCH
004044: MSC I SDCCH TCH
004045: MSC I SDCCH
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
Counter ID: 004001 Network element name: MSC I UNSUCCESS HO DUE LACK
Version: 4.0 NetAct name: MSC_I_FAIL_LACK
DN9813636 29
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.3 004002 / MSC I UNSUCCESS HO DUE CONN
Description: Number of incoming HOs, controlled by the MSC, that are unsuccessful due to a lack of radio resources.
Impact: HO failure
Reason for the impact: Internal
Updated: a) When no SDCCH is available for an SDCCH HO.b) When no TCH is available for a TCH HO.c) When no TCH is available for an SDCCH to TCH HO.
See figure Unsuccessful external TCH to TCH handover due to a lack of resources, target BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
Counter ID: 004002 Network element name: MSC I UNSUCCESS HO DUE CONN
Version: 4.0 NetAct name: MSC_I_FAIL_CONN
Description: Number of incoming HOs, controlled by the MSC, that are unsuccessful due to a connection failure.
Impact: HO failure
Reason for the impact: External/Abis interface
Updated: When the connection between the MS and the BTS is broken (on the target channel), that is, when a message carrying an indication of a connection failure is received (radio link failure or transcoder failure).
See figure Unsuccessful external TCH to TCH handover due to a radio link failure during handover, target BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
30 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.4 004003 / MSC I UNSUCCESS HO DUE BSS PROBLEM
2.5 004004 / MSC O SUCCESS HO
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
Counter ID: 004003 Network element name: MSC I UNSUCCESS HO DUE BSS PROBLEM
Version: 4.0 NetAct name: MSC_I_FAIL_BSS
Description: Number of incoming HOs, controlled by the MSC, that are unsuccessful because of BSS problems.
Impact: HO failure
Reason for the impact: External/Abis interface
Updated: When the radio channel activation fails.
See figure Unsuccessful external TCH to TCH handover due to a failure in the activa-tion of a new channel
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
Counter ID: 004004 Network element name: MSC O SUCCESS HO
Version: 4.0 NetAct name: MSC_O_SUCC_HO
Description: Number of successful outgoing HOs controlled by the MSC.
This counter is updated when one of the counters 004049, 004050 or 004051 is updated. This counter represents their sum.
DN9813636 31
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.6 004005 / MSC O GEN HO REQUIRED MESSAGES
Updated: When the HO (SDCCH to SDCCH, SDCCH to TCH or TCH to TCH) is com-pleted.
See figures:- Successful external TCH to TCH handover, source BSC- Successful external SDCCH to SDCCH handover, source BSC- External directed retry, source BSC- Successful handover type reselection from an internal intra-cell TCH to TCH handover to an external handover due to switching circuit pool- Successful handover type reselection from an internal inter-cell TCH to TCH handover to an external handover due to switching the circuit pool- Successful external TCH TCH HSCSD handover from two to two channels, source BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004049: MSC O TCH TCH
004050: MSC O SDCCH TCH
004051: MSC O SDCCH
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
Counter ID: 004005 Network element name: MSC O GEN HO REQUIRED MESSAGES
Version: 4.0 NetAct name: MSC_O_HO_RQ_MSG
Description: Total number of the HO_REQUIRED messages that are generated by outgoing HOs controlled by the MSC.
32 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.7 004006 / MSC O UNSUCCESS HO DUE RETURN
Updated: When the BSC sends the HANDOVER_REQUIRED message to the MSC.
See figures:- Successful external TCH to TCH handover, source BSC- Successful external SDCCH to SDCCH handover, source BSC- External directed retry, source BSC- Unsuccessful external TCH to TCH handover due to a lack of resources, source BSC- Unsuccessful external TCH to TCH handover due to MS returning to the old channel, source BSC- Unsuccessful external TCH to TCH handover due to call clearing during handover, source BSC- Successful handover type reselection from an internal intra-cell TCH to TCH handover to an external handover due to switching the circuit pool- Successful handover type reselection from an internal inter-cell TCH to TCH handover to an external handover due to switching the circuit pool- Unsuccessful external TCH to TCH handover because the MSC rejects the handover due to various causes, source BSC- Unsuccessful external TCH to TCH handover due to GSM timer T8 expiry, source BSC- Unsuccessful external TCH to TCH handover due to adjacent cell error, source BSC- Unsuccessful external TCH or TCH handover, source BSC- Successful external TCH TCH HSCSD handover from two to two channels, source BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
Counter ID: 004006 Network element name: MSC O UNSUCCESS HO DUE RETURN
Version: 4.0 NetAct name: MSC_O_FAIL_RET
Description: Number of outgoing HOs, controlled by the MSC, that are unsuccessful because the MS returns to the source channel.
Impact: HO failure.
Reason for the impact: External/Abis interface.
DN9813636 33
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.8 004007 / MSC O END OF HO
Updated: When the MS returns to the source channel.
See figure Unsuccessful external TCH to TCH handover due to MS returning to the old channel, source BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
Counter ID: 004007 Network element name: MSC O END OF HO
Version: 4.0 NetAct name: MSC_O_END_OF_HO
Description: Number of the end of handover procedures (outgoing HO controlled by the MSC).
Impact:- HO failure (b and d)- Possibly call cleared (a and c)
Reason for the impact: External/A interface
Updated: a) When the GSM timer T8 expires (the CLEAR_COMMAND message not received).b) When the HO is rejected with another cause than switch_crc_pool, cip_type_mismatch, invalid_cell, no_radio_res_avail, req_terr_res_unava or T7_expiry.c) When the MSC sends a CLEAR_COMMAND message with a reason other than handover successful or call control to the BSC.d) When there is an internal conflict with the A interface.
See figures:- Unsuccessful external TCH to TCH handover because the MSC rejects the handover due to various causes, source BSC- Unsuccessful external TCH to TCH handover due to GSM timer T8 expiry, source BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
34 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.9 004008 / MSC O END OF HO DUE BSS
2.10 004009 / MSC O GEN HO COM MESSAGES
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
Counter ID: 004008 Network element name: MSC O END OF HO DUE BSS
Version: 4.0 NetAct name: MSC_O_END_HO_BSS
Description: Number of the end of handover procedures due to BSS problems (out-going HO controlled by the MSC).
Impact: The call may possibly be cleared.
Reason for the impact: External/Abis interface.
Updated: When the connection between the MS and the BTS is broken (on the source channel), that is, when a message carrying an indication of a connection failure is received (radio link failure or transcoder failure).
See figure Unsuccessful external TCH to TCH handover due to a radio link failure during handover, source BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
Counter ID: 004009 Network element name: MSC O GEN HO COM MESSAGES
Version: 4.0 NetAct name: MSC_O_HO_COMM
Description: Number of the HANDOVER_COMMAND messages that are generated by outgoing HOs controlled by the MSC.
DN9813636 35
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.11 004010 / BSC I SUCCESS HO
Updated: When HANDOVER_COMMAND is sent to the MS.
See figures:- Successful external TCH to TCH handover, source BSC- Successful external SDCCH to SDCCH handover, source BSC- External directed retry, source BSC- Unsuccessful external TCH to TCH handover due to MS returning to the old channel, source BSC- Unsuccessful external TCH to TCH handover due to call clearing during handover, source BSC- Successful handover type reselection from an internal intra-cell TCH to TCH handover to an external handover due to switching the circuit pool- Successful handover type reselection from an internal inter-cell TCH to TCH handover to an external handover due to switching the circuit pool- Unsuccessful external TCH to TCH handover due to GSM timer T8 expiry, source BSC- Successful external TCH TCH HSCSD handover from two to two channels, source BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
Counter ID: 004010 Network element name: BSC I SUCCESS HO
Version: 4.0 NetAct name: BSC_I_SUCC_HO
Description: Number of successful incoming HOs controlled by the BSC.
Depedencies: When one of the counters 004056, 004057 or 004058 is updated. This counter represents their sum.
36 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.12 004011 / BSC I UNSUCCESS HO DUE LACK
Updated: When the HO (SDCCH to SDCCH, SDCCH to TCH or TCH to TCH) is com-pleted.
See figures:- Successful internal inter-cell TCH to TCH handover- Successful internal inter-cell SDCCH to SDCCH handover- Internal inter-cell directed retry, including software BSS6114 TCH assignment to the super-reuse TRX in IUO- Successful internal inter-cell TCH TCH HSCSD handover from three to one channel- Successful internal inter-cell TCH TCH HSCSD handover from two to three channels- Internal inter-cell direct access from the TCH on a child TRX to the TCH on a parent TRX
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004056: BSC I TCH TCH
004057: BSC I SDCCH TCH
004058: BSC I SDCCH
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
Counter ID: 004011 Network element name: BSC I UNSUCCESS HO DUE LACK
Version: 4.0 NetAct name: BSC_I_FAIL_LACK
Description: Number of incoming HOs, controlled by the BSC, that are unsuccessful due to a lack of resources.
Counter 004072 is updated along with this counter.
Impact: HO failure
Reason for the impact: Internal
DN9813636 37
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.13 004012 / BSC I UNSUCCESS HO DUE CONN
Updated: a) When no SDCCH is available for an SDCCH HO.b) When no TCH is available for a TCH HO.c) When no TCH is available for an SDCCH to TCH HO.
See figure Unsuccessful internal inter-cell TCH to TCH handover due to a lack of resources
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004072: BSC O FAIL LACK
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
Counter ID: 004012 Network element name: BSC I UNSUCCESS HO DUE CONN
Version: 4.0 NetAct name: BSC_I_FAIL_CONN
Description: Number of incoming HOs, controlled by the BSC, that are unsuccessful due to a connection failure (the MS fails to move to the target channel).
Impact:- HO failure- The call may possibly be cleared
Reason for the impact: External/Abis interface
Dependencies:a) Counter 004015 is updated along with this counter.b) Counters 004016, 004083 and 004084 are updated along with this counter.c) Counter 004016 or 004042 is updated along with this counter.
38 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.14 004013 / BSC I UNSUCCESS HO DUE BSS PROBLEM
Updated: a) When the MS returns to the source channelb) When the MS is lost (GSM timer T3103 expires).c) When the connection between the MS and the BTS is broken (on the target chan-nel), that is, when a message carrying an indication of a connection failure is received (radio link failure or transcoder failure).
See figures:- Unsuccessful internal inter-cell TCH to TCH handover due to losing the MS during handover. The GSM timer T3103 expires- Unsuccessful internal inter-cell TCH to TCH handover due to MS returning to the old channel
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004015: BSC O UNSUCCESS HO DUE RETURN
004016: BSC O END OF HO
004042: BSC O CALL CLEAR DURING HO
004083: BSC I DROP CALLS
004084: BSC O DROP CALLS
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
Counter ID: 004013 Network element name: BSC I UNSUCCESS HO DUE BSS PROBLEM
Version: 4.0 NetAct name: BSC_I_FAIL_BSS
Description: Number of incoming HOs, controlled by the BSC, that are unsuccessful due to BSS problems.
Impact:a) HO failureb) Call cleared
Reason for the impact: External/Abis interface or Internal/A -interface
Dependencies:a) Counter 004016 is updated along with this counter.b) Counters 004017, 004083 and 004084 are updated along with this counter.
DN9813636 39
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.15 004014 / BSC O SUCCESS HO
Updated: a) When the radio channel activation fails.b) When switching from a unidirectional to a bi-directional speech path fails.
See figures:- Unsuccessful internal inter-cell TCH to TCH handover due to a failure in the activa-tion of a new channel- Unsuccessful internal inter-cell TCH to TCH handover caused by internal timer expiry or a failure in the connection of a bi-directional speech path
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004016: BSC O END OF HO
004017: BSC O END OF HO DUE BSS
004083: BSC I DROP CALLS
004084: BSC O DROP CALLS
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
Counter ID: 004014 Network element name: BSC O SUCCESS HO
Version: 4.0 NetAct name: BSC_O_SUCC_HO
Description: Number of successful outgoing HOs controlled by the BSC.
This counter is updated when one of the counters 004064, 004065 or 004066 is updated. This counter represents their sum.
Updated: When the HO (SDCCH to SDCCH, SDCCH to TCH or TCH to TCH) is com-pleted.
See figures:- Successful internal inter-cell TCH to TCH handover- Successful internal inter-cell SDCCH to SDCCH handover- Internal inter-cell directed retry, including software BSS6114 TCH assignment to the super-reuse TRX in IUO- Successful internal inter-cell TCH TCH HSCSD handover from three to one channel- Successful internal inter-cell TCH TCH HSCSD handover from two to three channels- Internal inter-cell direct access from the TCH on a child TRX to the TCH on a parent TRX
Logical type: Sum Trigger type: Event Sampling interval:
40 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.16 004015 / BSC O UNSUCCESS HO DUE RETURN
Unit: Integer number Range: Example values:
Dependencies with other counters:
004064: BSC O TCH TCH
004065: BSC O SDCCH TCH
004066: BSC O SDCCH
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
Counter ID: 004015 Network element name: BSC O UNSUCCESS HO DUE RETURN
Version: 4.0 NetAct name: BSC_O_FAIL_RET
Description: Number of outgoing HOs, controlled by the BSC, that are unsuccessful because the MS returns to the source channel.
Counter 004012 is updated along with this counter.
Impact: HO failure
Reason for the impact: External/Abis interface
Updated: When the MS returns to the source channel.
See figure Unsuccessful internal inter-cell TCH to TCH handover due to MS returning to the old channel
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004012: BSC I UNSUCCESS HO DUE CONN
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
DN9813636 41
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.17 004016 / BSC O END OF HO
Counter ID: 004016 Network element name: BSC O END OF HO
Version: 4.0 NetAct name: BSC_O_END_OF_HO
Description: Number of the end of handover procedures that are related to outgoing HOs controlled by the BSC.
Dependencies:a) Counters 004012, 004083 and 004084 are updated along with this counter.b) Counter 004013 is updated along with this counter.c) Counter 004012 is updated along with this counter.
Impact:a) Call clearedb) and c) HO failure
Reason for the impact: External/Abis interface
Updated: a) When the MS is lost (GSM timer T3103 expires).b) When radio channel activation fails.c) When the connection between the MS and the BTS is broken (on the target chan-nel), that is, when a message carrying an indication of a connection failure is received (radio link failure or transcoder failure).
See figures:- Unsuccessful internal inter-cell TCH to TCH handover due to a failure in the activa-tion of a new channel- Unsuccessful internal inter-cell TCH to TCH handover due to losing the MS during handover. The GSM timer T3103 expires
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004012: BSC I UNSUCCESS HO DUE CONN
004013: BSC I UNSUCCESS HO DUE BSS PROBLEM
004083: BSC I DROP CALLS
004084: BSC O DROP CALLS
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
42 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.18 004017 / BSC O END OF HO DUE BSS
2.19 004018 / INT CELL SUCCESS HO
Counter ID: 004017 Network element name: BSC O END OF HO DUE BSS
Version: 4.0 NetAct name: BSC_O_END_HO_BSS
Description: Number of outgoing HOs, controlled by the BSC, that are unsuccessful due to BSS problems.
Dependencies:a) Counter 004081 is updated along with this counter.b) Counters 004013, 004083 and 004084 are updated along with this counter.
Impact: Call cleared.
Reason for the impact: External/Abis interface
Updated: a) When the connection between the MS and the BTS is broken (on the source channel), that is, when a message carrying an indication of a connection failure is received (radio link failure or transcoder failure) before the HO_COMMAND message.b) When switching from a unidirectional to a bi-directional speech path fails.
See figures:- Unsuccessful internal inter-cell TCH to TCH handover due to a radio link failure during handover- Unsuccessful internal inter-cell TCH to TCH handover caused by internal timer expiry or a failure in the connection of a bi-directional speech path
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004013: BSC I UNSUCCESS HO DUE BSS PROBLEM
004081: BSC I END OF HO
004083: BSC I DROP CALLS
004084: BSC O DROP CALLS
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
Counter ID: 004018 Network element name: INT CELL SUCCESS HO
DN9813636 43
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.20 004019 / INT CELL UNSUCCESS HO DUE LACK
Version: 4.0 NetAct name: CELL_SUCC_HO
Description: Number of successful intra-cell HOs.
This counter is updated when one of the counters 004073, 004074 or 004075 is updated. This counter represents their sum.
Updated: When the HO (SDCCH to SDCCH, TCH to TCH or SDCCH to TCH) is com-pleted.
See figures:- Successful internal intra-cell TCH to TCH handover- Successful internal intra-cell SDCCH to SDCCH handover- Internal intra-cell directed retry including software BSS6114: TCH assignment to the super-reuse TRX in IUO- Successful internal intra-cell TCH TCH HSCSD handover from two to one channel- Successful internal intra-cell TCH TCH HSCSD handover from one to three channels- Internal intra-cell direct access from regular DCCH to a super-reuse TRX
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004073: CELL TCH TCH
004074: CELL SDCCH TCH
004075: CELL SDCCH
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
Counter ID: 004019 Network element name: INT CELL UNSUCCESS HO DUE LACK
Version: 4.0 NetAct name: CELL_FAIL_LACK
Description: Number of intra-cell HOs that are unsuccessful due to a lack of resources.
Impact: HO failure
Reason for the impact: Internal
44 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.21 004020 / INT CELL UNSUCCESS HO DUE MOVE
Updated: a) When no SDCCH is available for an SDCCH HO.b) When no TCH is available for a TCH HO.c) When no TCH is available for an SDCCH to TCH HO.
See figure Unsuccessful internal intra-cell TCH to TCH handover due to lack of resources
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
Counter ID: 004020 Network element name: INT CELL UNSUCCESS HO DUE MOVE
Version: 4.0 NetAct name: CELL_FAIL_MOVE
Description: Number of intra-cell HOs that are unsuccessful because the MS cannot either move to the target channel or return to the source channel.
Counter 004085 is updated along with this counter.
Impact: Call cleared
Reason for the impact: External/Abis interface
Updated: When the MS is lost (GSM timer T3107 expires).
See figure Unsuccessful internal intra-cell TCH to TCH handover due to losing the MS during handover. The GSM timer T3107 expires
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004085: CELL DROP CALLS
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
DN9813636 45
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.22 004021 / INT CELL UNSUCCESS HO DUE BSS PROBLEM
Exceptions to related standard:
Used from release: S1 Definition updated in release:
Counter ID: 004021 Network element name: INT CELL UNSUCCESS HO DUE BSS PROBLEM
Version: 4.0 NetAct name: CELL_FAIL_BSS
Description: Number of unsuccessful intra-cell HOs due to BSS problems.
Dependency:d) Counter 004085 is updated along with this counter.
Impact:a) and b) HO failurec) Possibly call clearedd) Call cleared
Reason for the impact: External/Abis interface or Internal/A -interface
Updated: a) When a radio channel activation fails.b) When the physical context request fails.c) When the connection between the MS and the BTS is broken, that is, when a message carrying an indication of a connection failure is received (radio link failure or transcoder failure).d) When switching from a unidirectional to a bi-directional speech path fails.
See figure Unsuccessful internal intra-cell TCH to TCH handover due to a failure in the activation of a new channel
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004085: CELL DROP CALLS
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
46 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.23 004022 / INT CELL UNSUCCESS HO DUE RETURN
2.24 004023 / CAUSE UPLINK QUALITY
Counter ID: 004022 Network element name: INT CELL UNSUCCESS HO DUE RETURN
Version: 4.0 NetAct name: CELL_FAIL_RET
Description: Number of unsuccessful intra-cell HOs due to the MS's return to the source channel.
Impact: HO failure
Reason for the impact: External/Abis interface
Updated: When the MS returns to the source channel.
See figures:- Unsuccessful internal intra-cell TCH to TCH handover due to MS returning to the old channel- Unsuccessful internal intra-cell TCH to TCH handover, caused by an internal timer expiry in the BSC or a CONNECTION_FAILURE, ERROR_INDICATION, or ERROR_REPORT message coming to the target channel
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
Counter ID: 004023 Network element name: CAUSE UPLINK QUALITY
Version: 4.0 NetAct name: CAUSE_UP_QUAL
Description: Number of HO attempts caused by uplink quality (outgoing).
Updated: When a HO is started due to uplink quality.
See figures:- Successful internal inter-cell TCH to TCH handover- Successful external TCH to TCH handover, source BSC- Successful internal inter-cell SDCCH to SDCCH handover- Successful external SDCCH to SDCCH handover, source BSC
Logical type: Sum Trigger type: Event Sampling interval:
DN9813636 47
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.25 004024 / CAUSE UPLINK LEVEL
2.26 004025 / CAUSE DOWNLINK QUALITY
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
Counter ID: 004024 Network element name: CAUSE UPLINK LEVEL
Version: 4.0 NetAct name: CAUSE_UP_LEVEL
Description: Number of HO attempts caused by uplink level (outgoing).
Updated: When a HO is started due to uplink level.
See figures:- Successful internal inter-cell TCH to TCH handover- Successful external TCH to TCH handover, source BSC- Successful internal inter-cell SDCCH to SDCCH handover- Successful external SDCCH to SDCCH handover, source BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
Counter ID: 004025 Network element name: CAUSE DOWNLINK QUALITY
Version: 4.0 NetAct name: CAUSE_DOWN_QUAL
Description: Number of HO attempts caused by downlink quality (outgoing).
48 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.27 004026 / CAUSE DOWNLINK LEVEL
Updated: When a HO is started due to downlink quality.
See figures:- Successful internal intra-cell TCH to TCH handover- Successful internal inter-cell TCH to TCH handover- Successful external TCH to TCH handover, source BSC- Successful internal intra-cell SDCCH to SDCCH handover- Successful internal inter-cell SDCCH to SDCCH handover- Successful external SDCCH to SDCCH handover, source BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
Counter ID: 004026 Network element name: CAUSE DOWNLINK LEVEL
Version: 4.0 NetAct name: CAUSE_DOWN_LEV
Description: Number of HO attempts caused by downlink level (outgoing).
Updated: When a HO is started due to downlink level.
See figures:- Successful internal inter-cell TCH to TCH handover- Successful external TCH to TCH handover, source BSC- Successful internal inter-cell SDCCH to SDCCH handover- Successful external SDCCH to SDCCH handover, source BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
DN9813636 49
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.28 004027 / CAUSE DISTANCE
2.29 004028 / CAUSE RESPONSE TO MSC INVOCATION
Counter ID: 004027 Network element name: CAUSE DISTANCE
Version: 4.0 NetAct name: CAUSE_DISTANCE
Description: Number of HO attempts caused by distance (outgoing).
Updated: When a HO is started due to distance.
See figures:- Successful internal intra-cell TCH to TCH handover- Successful internal inter-cell TCH to TCH handover- Successful external TCH to TCH handover, source BSC- Successful internal intra-cell SDCCH to SDCCH handover- Successful internal inter-cell SDCCH to SDCCH handover- Successful external SDCCH to SDCCH handover, source BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
Counter ID: 004028 Network element name: CAUSE RESPONSE TO MSC INVOCATION
Version: 4.0 NetAct name: CAUSE_MSC_INVOC
Description: Number of HO attempts due to a response to an invocation from the MSC (outgoing).
Updated: When a HO is started due to a response to an MSC invocation.
See figures:- Successful internal inter-cell TCH to TCH handover- Successful external TCH to TCH handover, source BSC- Successful internal inter-cell SDCCH to SDCCH handover- Successful external SDCCH to SDCCH handover, source BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
50 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.30 004029 / CAUSE HIGH INT ON UPLINK
2.31 004030 / CAUSE HIGH INT ON DOWNLINK
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
Counter ID: 004029 Network element name: CAUSE HIGH INT ON UPLINK
Version: 4.0 NetAct name: CAUSE_INTFER_UP
Description: Number of HO attempts caused by high interference on uplink (outgo-ing).
Updated: When a HO is started due to high interference on uplink.
See figures:- Successful internal intra-cell TCH to TCH handover- Successful internal inter-cell TCH to TCH handover- Successful external TCH to TCH handover, source BSC- Successful internal intra-cell SDCCH to SDCCH handover- Successful internal inter-cell SDCCH to SDCCH handover- Successful external SDCCH to SDCCH handover, source BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
Counter ID: 004030 Network element name: CAUSE HIGH INT ON DOWNLINK
Version: 4.0 NetAct name: CAUSE_INTFER_DWN
Description: Number of HO attempts caused by high interference on downlink (outgo-ing).
DN9813636 51
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.32 004031 / CAUSE UMBRELLA HO
Updated: When a HO is started due to high interference on downlink.
See figures:- Successful internal intra-cell TCH to TCH handover- Successful internal inter-cell TCH to TCH handover- Successful external TCH to TCH handover, source BSC- Successful internal intra-cell SDCCH to SDCCH handover- Successful internal inter-cell SDCCH to SDCCH handover- Successful external SDCCH to SDCCH handover, source BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
Counter ID: 004031 Network element name: CAUSE UMBRELLA HO
Version: 4.0 NetAct name: CAUSE_UMBR
Description: Number of attempts to umbrella HO (outgoing).
Updated: When a HO is started due to an umbrella HO.
See figures:- Successful internal inter-cell TCH to TCH handover- Successful external TCH to TCH handover, source BSC- Successful internal inter-cell SDCCH to SDCCH handover- Successful external SDCCH to SDCCH handover, source BSC- Internal inter-cell direct access from the TCH on a child TRX to the TCH on a parent TRX
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
52 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.33 004032 / CAUSE POWER BUDGET HO
2.34 004033 / CAUSE HO STARTED BY OMC
Used from release: S1 Definition updated in release:
Counter ID: 004032 Network element name: CAUSE POWER BUDGET HO
Version: 4.0 NetAct name: CAUSE_PBDGT
Description: Number of attempts to power budget HO (outgoing).
Updated: When a HO is started due to a power budget HO.
See figures:- Successful internal inter-cell TCH to TCH handover- Successful external TCH to TCH handover, source BSC- Successful internal inter-cell SDCCH to SDCCH handover- Successful external SDCCH to SDCCH handover, source BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
Counter ID: 004033 Network element name: CAUSE HO STARTED BY OMC
Version: 4.1 NetAct name: CAUSE_OMC
Description: Number of HO attempts started by the OMC (outgoing).
Updated: When a HO is started by OMC or if the BSS21389 Security Improvement by Immediate SDCCH Handover is employed and Immediate SDCCH Handover is started.
See figures:- Successful internal intra-cell TCH to TCH handover- Successful internal inter-cell TCH to TCH handover- Successful external TCH to TCH handover, source BSC- Successful internal intra-cell SDCCH to SDCCH handover- Successful internal inter-cell SDCCH to SDCCH handover- Successful external SDCCH to SDCCH handover, source BSC
DN9813636 53
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.35 004034 / CAUSE HO STARTED BY CHANNEL ADM
2.36 004035 / CAUSE HO STARTED BY TRAFFIC REASON
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
Counter ID: 004034 Network element name: CAUSE HO STARTED BY CHANNEL ADM
Version: 4.0 NetAct name: CAUSE_CH_ADM
Description: This counter is not in use.
Updated: This counter is not updated.
Logical type: Trigger type: Sampling interval:
Unit: Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
Counter ID: 004035 Network element name: CAUSE HO STARTED BY TRAFFIC REASON
Version: 4.0 NetAct name: HO_ATT_DUE_TO_BSC_CONTR_TRHO
Description: Number of HO attempts due to TRHO, controlled by the BSC.
Updated: When a HO is started due to BSC TRHO.
See figure Handover attempt due to a BSC controlled TRHO
Logical type: Sum Trigger type: Event Sampling interval:
54 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.37 004036 / INT CELL HO NOT ALLOWED
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS8123: Advanced Multilayer Handling
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S8 Definition updated in release:
Counter ID: 004036 Network element name: INT CELL HO NOT ALLOWED
Version: 4.0 NetAct name: CELL_NOT_ALLWD
Description: Number of HOs that are unsuccessful because no HOs are allowed (intra-cell HO).
Impact: HO failure
Reason for the impact: Internal
Updated: a) When HO execution is not allowed in the current phase of the call in prog-ress.b) When a HO is interrupted because an assignment procedure has been started during a HO but before the BSC has sent an ASSIGNMENT_COMMAND or HANDOVER_COMMAND message to the MS.
See figure Unsuccessful internal intra-cell TCH to TCH handover because a handover is not allowed at this phase of the call
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
DN9813636 55
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.38 004037 / MSC O HO NOT ALLOWED
2.39 004038 / BSC O HO NOT ALLOWED
Counter ID: 004037 Network element name: MSC O HO NOT ALLOWED
Version: 4.0 NetAct name: MSC_O_NOT_ALLWD
Description: Number of outgoing HOs, controlled by the MSC, that are unsuccessful because no HOs are allowed.
Impact: HO failure
Reason for the impact: Internal
Updated: a) When HO execution is not allowed in the current phase of the call in prog-ress.b) When the DISABLE_INT_HO parameter is set and an underlay overlay HO start is attempted.c) When DISABLE_EXT_DR is set and DR is attempted.d) When external HO is not possible due to FACCH call setup.e) When an external HO is not possible because the neighbouring cell is defined to be the normal area of an extended cell from another BSC.
See figures:- Unsuccessful external TCH to TCH handover because a handover is not allowed, source BSC- Unsuccessful external TCH to TCH handover because the MSC rejects the handover due to various causes, source BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
Counter ID: 004038 Network element name: BSC O HO NOT ALLOWED
Version: 4.0 NetAct name: BSC_O_NOT_ALLWD
56 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.40 004039 / INT CELL CALL CLEAR DURING HO
Description: Number of outgoing HOs, controlled by the BSC, that are unsuccessful because no HOs are allowed.
Counter 004081 is updated along with this counter.
Impact: HO failure
Reason for the impact: External/A interface
Updated: - When HO execution is not allowed in the current phase of the call in prog-ress.- When an HO is interrupted because the assignment procedure bas been started during a HO but before the BSC has sent a HANDOVER_COMMAND message to the MS.
See figure Unsuccessful internal inter-cell TCH to TCH handover because a handover is not allowed at this phase of the call
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004081: BSC I END OF HO
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
Counter ID: 004039 Network element name: INT CELL CALL CLEAR DURING HO
Version: 4.0 NetAct name: CELL_CALL_CLR
Description: Number of intra-cell HOs that are unsuccessful because the call is cleared.
Reason for the impact: External
Updated: a) When the subscriber clears the call during the HO.b) When channel blocking is started during the HO.
See figure Unsuccessful internal intra-cell TCH to TCH handover due to call clearing during handover
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
DN9813636 57
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.41 004040 / MSC I CALL CLEAR DURING HO
2.42 004041 / MSC O CALL CLEAR DURING HO
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
Counter ID: 004040 Network element name: MSC I CALL CLEAR DURING HO
Version: 4.0 NetAct name: MSC_I_CALL_CLR
Description: This counter is not in use.
Updated: This counter is not updated.
Logical type: Trigger type: Sampling interval:
Unit: Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
Counter ID: 004041 Network element name: MSC O CALL CLEAR DURING HO
Version: 4.1 NetAct name: MSC_O_CALL_CLR
Description: Number of outgoing HOs, controlled by the MSC, that are unsuccessful because the call is cleared during the HO.
Impact: Call cleared
Reason for the impact: Internal or external/A interface
58 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.43 004042 / BSC O CALL CLEAR DURING HO
Updated: a) When the subscriber clears the call during the HO.b) When channel blocking is started during the HO.c) When the MS has sent messages concerning - A interface speech circuits - state changes of the BSSAP subsystem - abnormal release of the SCCP connectiond) When the reset of circuits are received from the MSCe) When there is a BCSU/BCXU restart (if the TCHs related to the HO are in that BCSU/BCXU)
See figure Unsuccessful external TCH to TCH handover due to call clearing during handover, source BSC.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
Counter ID: 004042 Network element name: BSC O CALL CLEAR DURING HO
Version: 4.0 NetAct name: BSC_O_CALL_CLR
Description: Number of outgoing HOs, controlled by the BSC, that are unsuccessful because the call is cleared.
Counter 004081 is updated along with this counter.
Impact: Call cleared
Reason for the impact: Internal or external / A interface
Updated: a) When the subscriber clears the call during the HO.b) When channel blocking is started during the HO.
See figure Unsuccessful internal inter-cell TCH to TCH handover due to call clearing during handover
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004081: BSC I END OF HO
DN9813636 59
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.44 004043 / MSC I TCH TCH
2.45 004044 / MSC I SDCCH TCH
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S1 Definition updated in release:
Counter ID: 004043 Network element name: MSC I TCH TCH
Version: 4.0 NetAct name: MSC_I_TCH_TCH
Description: Number of successful incoming TCH to TCH HOs controlled by the MSC.
Counter 004000 is updated along with this counter.
Updated: When the HO is completed.
See figures:- Successful external TCH to TCH handover, target BSC- Successful external TCH TCH HSCSD handover from four to one channel, target BSC- Successful external TCH TCH HSCSD handover from one to two channels, target BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004000: MSC I SUCCESS HO
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S2 Definition updated in release:
Counter ID: 004044 Network element name: MSC I SDCCH TCH
Version: 4.0 NetAct name: MSC_I_SDCCH_TCH
60 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.46 004045 / MSC I SDCCH
Description: Number of successful incoming SDCCH to TCH HOs controlled by the MSC.
Counter 004000 is updated along with this counter.
Updated: When a directed retry procedure is completed.
See figure External directed retry, target BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004000: MSC I SUCCESS HO
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S2 Definition updated in release:
Counter ID: 004045 Network element name: MSC I SDCCH
Version: 4.0 NetAct name: MSC_I_SDCCH
Description: Number of successful incoming SDCCH to SDCCH HOs controlled by the MSC.
Counter 004000 is updated along with this counter.
Updated: When the HO is completed.
See figure Successful external SDCCH to SDCCH handover, target BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004000: MSC I SUCCESS HO
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S2 Definition updated in release:
DN9813636 61
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.47 004046 / MSC I TCH TCH AT
2.48 004047 / MSC I SDCCH TCH AT
Counter ID: 004046 Network element name: MSC I TCH TCH AT
Version: 4.0 NetAct name: MSC_I_TCH_TCH_AT
Description: Number of attempts to incoming TCH to TCH HOs controlled by the MSC.
Updated: When the HO attempt is started.
See figures:- Successful external TCH to TCH handover, target BSC- Unsuccessful external TCH to TCH handover due to a lack of resources, target BSC- Unsuccessful external TCH to TCH handover due to a failure in the activation of a new channel, target BSC- Unsuccessful external TCH to TCH handover due to MS returning to the old channel, target BSC- Unsuccessful external TCH to TCH handover because no radio resources are avail-able due to switch_crc_pool, target BSC- Unsuccessful external TCH to TCH handover due to a radio link failure during han-dover, target BSC- Unsuccessful external TCH to TCH handover, target BSC- Successful external TCH TCH HSCSD handover from four to one channel, target BSC- Successful external TCH TCH HSCSD handover from one to two channels, target BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S2 Definition updated in release:
Counter ID: 004047 Network element name: MSC I SDCCH TCH AT
Version: 4.0 NetAct name: MSC_I_SDCCH_TCH_AT
Description: Number of attempts to incoming SDCCH to TCH HOs controlled by the MSC.
Updated: When a directed retry procedure is started.
See figure External directed retry, target BSC
62 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.49 004048 / MSC I SDCCH AT
2.50 004049 / MSC O TCH TCH
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS6115: Radio Channel Allocation Enhancements
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S2 Definition updated in release:
Counter ID: 004048 Network element name: MSC I SDCCH AT
Version: 4.0 NetAct name: MSC_I_SDCCH_AT
Description: Number of attempts to incoming SDCCH to SDCCH HOs controlled by the MSC.
Updated: When the HO attempt is started.
See figure Successful external SDCCH to SDCCH handover, target BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S2 Definition updated in release:
Counter ID: 004049 Network element name: MSC O TCH TCH
Version: 4.0 NetAct name: MSC_O_TCH_TCH
Description: Number of successful outgoing TCH to TCH HOs controlled by the MSC.
DN9813636 63
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.51 004050 / MSC O SDCCH TCH
Updated: When the HO is completed.
See figures:- Successful external TCH to TCH handover, source BSC- Successful handover type reselection from an internal intra-cell TCH to TCH handover to an external handover due to switching the circuit pool- Successful handover type reselection from an internal inter-cell TCH to TCH handover to an external handover due to switching the circuit pool- Successful external TCH TCH HSCSD handover from two to two channels, source BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S2 Definition updated in release:
Counter ID: 004050 Network element name: MSC O SDCCH TCH
Version: 4.0 NetAct name: MSC_O_SDCCH_TCH
Description: Number of successful outgoing SDCCH to TCH HOs controlled by the MSC.
Updated: When a directed retry procedure is completed.
See figure External directed retry, source BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS6115: Radio Channel Allocation Enhancements
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S2 Definition updated in release:
64 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.52 004051 / MSC O SDCCH
2.53 004052 / MSC O TCH TCH AT
Counter ID: 004051 Network element name: MSC O SDCCH
Version: 4.0 NetAct name: MSC_O_SDCCH
Description: Number of successful outgoing SDCCH to SDCCH HOs controlled by the MSC.
Updated: When the HO is completed.
See figure Successful external SDCCH to SDCCH handover, source BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S2 Definition updated in release:
Counter ID: 004052 Network element name: MSC O TCH TCH AT
Version: 4.0 NetAct name: MSC_O_TCH_TCH_AT
Description: Number of attempts to outgoing TCH to TCH HOs controlled by the MSC.
Updated: When the HO attempt is started.
See figures:- Successful external TCH to TCH handover, source BSC- Successful handover type reselection from an internal intra-cell TCH to TCH handover to an external handover due to switching the circuit pool- Successful handover type reselection from an internal inter-cell TCH to TCH handover to an external handover due to switching the circuit pool- Successful external TCH TCH HSCSD handover from two to two channels, source BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
DN9813636 65
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.54 004053 / MSC O SDCCH TCH AT
2.55 004054 / MSC O SDCCH AT
3GPP Measurement type:
Exceptions to related standard:
Used from release: S2 Definition updated in release:
Counter ID: 004053 Network element name: MSC O SDCCH TCH AT
Version: 4.0 NetAct name: MSC_O_SDCCH_TCH_AT
Description: Number of attempts to outgoing SDCCH to TCH HOs controlled by the MSC.
Updated: When a directed retry procedure is started.
See figure External directed retry, source BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS6115: Radio Channel Allocation Enhancements
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S2 Definition updated in release:
Counter ID: 004054 Network element name: MSC O SDCCH AT
Version: 4.0 NetAct name: MSC_O_SDCCH_AT
Description: Number of attempts to outgoing SDCCH to SDCCH HOs controlled by the MSC.
Updated: When the HO attempt is started.
See figure Successful external SDCCH to SDCCH handover, source BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
66 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.56 004055 / MSC O FAIL LACK
2.57 004056 / BSC I TCH TCH
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S2 Definition updated in release:
Counter ID: 004055 Network element name: MSC O FAIL LACK
Version: 4.0 NetAct name: MSC_O_FAIL_LACK
Description: Number of outgoing HOs, controlled by the MSC, that are unsuccessful because there are no radio resources available in the target cell.
Impact: HO failure
Reason for the impact: Internal
Updated: a) When no SDCCH is available in the target cell for an SDCCH HO.b) When no TCH is available in the target cell for a TCH HO.c) When no TCH is available in the target cell for an SDCCH to TCH HO.d) When no terrestrial channel is available in the target cell.e) When the GSM timer T7 expires
See figures:- Unsuccessful external TCH to TCH handover due to a lack of resources, source BSC- Unsuccessful external TCH to TCH handover because the MSC rejects the handover due to various causes, source BSC- Unsuccessful external TCH or TCH handover, source BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S2 Definition updated in release:
Counter ID: 004056 Network element name: BSC I TCH TCH
Version: 4.0 NetAct name: BSC_I_TCH_TCH
DN9813636 67
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.58 004057 / BSC I SDCCH TCH
Description: Number of successful incoming TCH to TCH HOs controlled by the BSC.
Counter 004010 is updated along with this counter.
Updated: When the HO is completed.
See figures:- Successful internal inter-cell TCH to TCH handover- Successful internal inter-cell TCH TCH HSCSD handover from three to one channel- Successful internal inter-cell TCH TCH HSCSD handover from two to three channels- Internal inter-cell direct access from the TCH on a child TRX to the TCH on a parent TRX
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004010: BSC I SUCCESS HO
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S2 Definition updated in release:
Counter ID: 004057 Network element name: BSC I SDCCH TCH
Version: 4.0 NetAct name: BSC_I_SDCCH_TCH
Description: Number of successful incoming SDCCH to TCH HOs controlled by the BSC.
Counter 004010 is updated along with this counter.
Updated: a) When a directed retry procedure is completed.b) When the direct access to the super-reuse TRX is completed.c) When the TCH assignment to the super-reuse TRX is completed.
See figures:- Internal inter-cell directed retry, including software BSS6114 TCH assignment to the super-reuse TRX in IUO
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004010: BSC I SUCCESS HO
Operability class:
68 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.59 004058 / BSC I SDCCH
2.60 004059 / BSC I TCH TCH AT
Related to feature:
BSS6114: Handover Enhancements
BSS6115: Radio Channel Allocation Enhancements
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S2 Definition updated in release:S7
Counter ID: 004058 Network element name: BSC I SDCCH
Version: 4.0 NetAct name: BSC_I_SDCCH
Description: Number of successful incoming SDCCH to SDCCH HOs controlled by the BSC.
Counter 004010 is updated along with this counter.
Updated: When the HO is completed.
See figure Successful internal inter-cell SDCCH to SDCCH handover
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004010: BSC I SUCCESS HO
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S2 Definition updated in release:
Counter ID: 004059 Network element name: BSC I TCH TCH AT
Version: 4.0 NetAct name: BSC_I_TCH_TCH_AT
Description: Number of attempts to incoming TCH to TCH HOs controlled by the BSC.
DN9813636 69
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.61 004060 / BSC I SDCCH TCH AT
Updated: When the HO attempt is started.
See figures:- Successful internal inter-cell TCH to TCH handover- Successful internal inter-cell TCH TCH HSCSD handover from three to one channel- Successful internal inter-cell TCH TCH HSCSD handover from two to three channels- Internal inter-cell direct access from the TCH on a child TRX to the TCH on a parent TRX
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S2 Definition updated in release:
Counter ID: 004060 Network element name: BSC I SDCCH TCH AT
Version: 4.0 NetAct name: BSC_I_SDCCH_TCH_AT
Description: Number of attempts to incoming SDCCH to TCH HOs controlled by the BSC.
Updated: a) When a directed retry procedure is started.b) When the direct access to the super-reuse TRX is started.c) When the TCH assignment to the super-reuse TRX is started.
See figures:- Internal inter-cell directed retry, including software BSS6114 TCH assignment to the super-reuse TRX in IUO
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS6114: Handover Enhancements
BSS6115: Radio Channel Allocation Enhancements
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
70 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.62 004061 / BSC I SDCCH AT
2.63 004062 / BSC I NONOPT
Used from release: S2 Definition updated in release:S7
Counter ID: 004061 Network element name: BSC I SDCCH AT
Version: 4.0 NetAct name: BSC_I_SDCCH_AT
Description: Number of attempts to incoming SDCCH to SDCCH HOs controlled by the BSC.
Updated: When the HO attempt is started.
See figure Successful internal inter-cell SDCCH to SDCCH handover
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S2 Definition updated in release:
Counter ID: 004062 Network element name: BSC I NONOPT
Version: 4.0 NetAct name: BSC_I_NONOPT
Description: Number of successful incoming HOs to a non-optimum cell controlled by the BSC.
Updated: When a HO to a target cell other than the first one in the list of candidate target cells is completed.
See figures:- Successful internal inter-cell TCH to TCH handover- Successful internal inter-cell SDCCH to SDCCH handover- Internal inter-cell directed retry, including software BSS6114 TCH assignment to the super-reuse TRX in IUO- Successful internal inter-cell TCH TCH HSCSD handover from three to one channel- Successful internal inter-cell TCH TCH HSCSD handover from two to three channels
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
DN9813636 71
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.64 004063 / BSC I NONOPT AT
2.65 004064 / BSC O TCH TCH
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S2 Definition updated in release:
Counter ID: 004063 Network element name: BSC I NONOPT AT
Version: 4.0 NetAct name: BSC_I_NONOPT_AT
Description: Number of attempts to incoming HOs to a non-optimum cell controlled by the BSC.
Updated: When a HO to a target cell other than the first one in the list of candidate target cells is started.
See figures:- Successful internal inter-cell TCH to TCH handover- Successful internal inter-cell SDCCH to SDCCH handover- Internal inter-cell directed retry, including software BSS6114 TCH assignment to the super-reuse TRX in IUO- Unsuccessful internal inter-cell TCH to TCH handover due to a lack of resources- Unsuccessful internal inter-cell TCH to TCH handover because no radio resources are available due to switch_crc_pool- Successful internal inter-cell TCH TCH HSCSD handover from three to one channel- Successful internal inter-cell TCH TCH HSCSD handover from two to three channels
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S2 Definition updated in release:
Counter ID: 004064 Network element name: BSC O TCH TCH
Version: 4.0 NetAct name: BSC_O_TCH_TCH
72 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.66 004065 / BSC O SDCCH TCH
Description: Number of successful outgoing TCH to TCH HOs controlled by the BSC.
Counter 004014 is updated along with this counter.
Updated: When the HO is completed.
See figures:- Successful internal inter-cell TCH to TCH handover- Successful internal inter-cell TCH TCH HSCSD handover from three to one channel- Successful internal inter-cell TCH TCH HSCSD handover from two to three channels- Internal inter-cell direct access from the TCH on a child TRX to the TCH on a parent TRX
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004014: BSC O SUCCESS HO
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S2 Definition updated in release:
Counter ID: 004065 Network element name: BSC O SDCCH TCH
Version: 4.0 NetAct name: BSC_O_SDCCH_TCH
Description: Number of successful outgoing TCH HOs controlled by the BSC.
Counter 004014 is updated along with this counter.
Updated: a) When a directed retry procedure is completed.b) When the direct access from the SDCCH to TCH on a super-reuse TRX is com-pleted.c) When the intelligent directed retry is completed.d) When the TCH assignment to a super-reuse TRX is completed.
See figures:- Internal inter-cell directed retry, including software BSS6114 TCH assignment to the super-reuse TRX in IUO
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004014: BSC O SUCCESS HO
DN9813636 73
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.67 004066 / BSC O SDCCH
2.68 004067 / BSC O TCH TCH AT
Operability class:
Related to feature:
BSS6114: Handover Enhancements
BSS6115: Radio Channel Allocation Enhancements
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S2 Definition updated in release:S7
Counter ID: 004066 Network element name: BSC O SDCCH
Version: 4.0 NetAct name: BSC_O_SDCCH
Description: Number of successful outgoing SDCCH to SDCCH HOs controlled by the BSC.
Counter 004014 is updated along with this counter.
Updated: When the HO is completed.
See figure Successful internal inter-cell SDCCH to SDCCH handover
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004014: BSC O SUCCESS HO
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S2 Definition updated in release:
Counter ID: 004067 Network element name: BSC O TCH TCH AT
Version: 4.0 NetAct name: BSC_O_TCH_TCH_AT
Description: Number of attempts to outgoing TCH to TCH HOs controlled by the BSC.
74 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.69 004068 / BSC O SDCCH TCH AT
Updated: When the HO attempt is started.
See figures:- Successful internal inter-cell TCH to TCH handover- Successful internal inter-cell TCH TCH HSCSD handover from three to one channel- Successful internal inter-cell TCH TCH HSCSD handover from two to three channels- Internal inter-cell direct access from the TCH on a child TRX to the TCH on a parent TRX
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS7057: Direct Access to Super Re-use TRX in IUO
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S2 Definition updated in release:S7
Counter ID: 004068 Network element name: BSC O SDCCH TCH AT
Version: 4.0 NetAct name: BSC_O_SDCCH_TCH_AT
Description: Number of attempts to outgoing SDCCH to TCH HOs controlled by the BSC.
Updated: a) When a directed retry procedure is started.b) When the direct access from the SDCCH to TCH on a super-reuse TRX is started.c) When the intelligent directed retry is started.d) When the TCH assignment to a super-reuse TRX is started.
See figures:- Internal inter-cell directed retry, including software BSS6114 TCH assignment to the super-reuse TRX in IUO
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS6114: Handover Enhancements
BSS6115: Radio Channel Allocation Enhancements
Related to standard:
3GPP Measurement name (Clause header):
DN9813636 75
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.70 004069 / BSC O SDCCH AT
2.71 004070 / BSC O NONOPT
3GPP Measurement type:
Exceptions to related standard:
Used from release: S2 Definition updated in release:S7
Counter ID: 004069 Network element name: BSC O SDCCH AT
Version: 4.0 NetAct name: BSC_O_SDCCH_AT
Description: Number of attempts to outgoing SDCCH to SDCCH HOs controlled by the BSC.
Updated: When the HO attempt is started.
See figure Successful internal inter-cell SDCCH to SDCCH handover
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S2 Definition updated in release:
Counter ID: 004070 Network element name: BSC O NONOPT
Version: 4.0 NetAct name: BSC_O_NONOPT
Description: Number of successful outgoing HOs to a non-optimum cell controlled by the BSC.
Updated: When a HO to a target cell other than the first one in the list of candidate target cells is completed.
See figures:- Successful internal inter-cell TCH to TCH handover- Successful internal inter-cell SDCCH to SDCCH handover- Internal inter-cell directed retry, including software BSS6114 TCH assignment to the super-reuse TRX in IUO- Successful internal inter-cell TCH TCH HSCSD handover from three to one channel- Successful internal inter-cell TCH TCH HSCSD handover from two to three channels
Logical type: Sum Trigger type: Event Sampling interval:
76 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.72 004071 / BSC O NONOPT AT
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S2 Definition updated in release:
Counter ID: 004071 Network element name: BSC O NONOPT AT
Version: 4.0 NetAct name: BSC_O_NONOPT_AT
Description: Number of attempts to outgoing HOs to a non-optimum cell controlled by the BSC.
Updated: When a HO to a target cell other than the first one in the list of candidate target cells is started.
See figures:- Successful internal inter-cell TCH to TCH handover- Successful internal inter-cell SDCCH to SDCCH handover- Internal inter-cell directed retry, including software BSS6114 TCH assignment to the super-reuse TRX in IUO- Unsuccessful internal inter-cell TCH to TCH handover due to a lack of resources- Unsuccessful internal inter-cell TCH to TCH handover because no radio resources are available due to switch_crc_pool- Successful internal inter-cell TCH TCH HSCSD handover from three to one channel- Successful internal inter-cell TCH TCH HSCSD handover from two to three channels
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S2 Definition updated in release:
DN9813636 77
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.73 004072 / BSC O FAIL LACK
2.74 004073 / CELL TCH TCH
Counter ID: 004072 Network element name: BSC O FAIL LACK
Version: 4.0 NetAct name: BSC_O_FAIL_LACK
Description: Number of BSC-controlled outgoing handovers that are unsuccessful due to lack of resources.
Impact: HO failure
Reason for the impact: Internal
Updated: a) When no SDCCH is available in the target cell for an SDCCH HO.b) When no TCH is available in the target cell for a TCH HO.c) When no TCH is available in the target cell for an SDCCH to TCH HO.
See figure Unsuccessful internal inter-cell TCH to TCH handover due to a lack of resources
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S2 Definition updated in release:S13
Counter ID: 004073 Network element name: CELL TCH TCH
Version: 4.0 NetAct name: CELL_TCH_TCH
Description: Number of successful intra-cell (TCH to TCH) HOs.
Counter 004018 is updated along with this counter.
Updated: When the HO is completed.
See figures:- Successful internal intra-cell TCH to TCH handover- Successful internal intra-cell TCH TCH HSCSD handover from two to one channel- Successful internal intra-cell TCH TCH HSCSD handover from one to three channels
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
78 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.75 004074 / CELL SDCCH TCH
Dependencies with other counters:
004018: INT CELL SUCCESS HO
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S2 Definition updated in release:
Counter ID: 004074 Network element name: CELL SDCCH TCH
Version: 4.0 NetAct name: CELL_SDCCH_TCH
Description: Number of successful intra-cell (SDCCH to TCH) HOs.
Counter 004018 is updated along with this counter.
Updated: a) When a channel assignment to a super-reuse TRX in an IUO DR is com-pleted.b) When the direct access to a super-reuse TRX is completed.
See figures:- Internal intra-cell directed retry including software BSS6114: TCH assignment to the super-reuse TRX in IUO- Internal intra-cell direct access from regular DCCH to a super-reuse TRX
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004018: INT CELL SUCCESS HO
Operability class:
Related to feature:
BSS7057: Direct Access to Super Re-use TRX in IUO
BSS6114: Handover Enhancements
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S2 Definition updated in release:S7
DN9813636 79
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.76 004075 / CELL SDCCH
2.77 004076 / CELL TCH TCH AT
Counter ID: 004075 Network element name: CELL SDCCH
Version: 4.0 NetAct name: CELL_SDCCH
Description: Number of successful intra-cell (SDCCH to SDCCH) HOs.
Counter 004018 is updated along with this counter.
Updated: When the HO is completed.
See figure Successful internal intra-cell SDCCH to SDCCH handover
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004018: INT CELL SUCCESS HO
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S2 Definition updated in release:
Counter ID: 004076 Network element name: CELL TCH TCH AT
Version: 4.0 NetAct name: CELL_TCH_TCH_AT
Description: Number of attempts of intra-cell (TCH to TCH) HOs.
Updated: When the HO attempt is started.
See figures:- Successful internal intra-cell TCH to TCH handover- Successful internal intra-cell TCH TCH HSCSD handover from two to one channel- Successful internal intra-cell TCH TCH HSCSD handover from one to three channels
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
80 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.78 004077 / CELL SDCCH TCH AT
2.79 004078 / CELL SDCCH AT
Exceptions to related standard:
Used from release: S2 Definition updated in release:
Counter ID: 004077 Network element name: CELL SDCCH TCH AT
Version: 4.0 NetAct name: CELL_SDCCH_TCH_AT
Description: Number of attempts of intra-cell (SDCCH to TCH) HOs.
Updated: a) When a channel assignment to a super-reuse TRX in an IUO DR is started.b) When the direct access to a super-reuse TRX is started.
See figures:- Internal intra-cell directed retry including software BSS6114: TCH assignment to the super-reuse TRX in IUO- Internal intra-cell direct access from regular DCCH to a super-reuse TRX
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS7057: Direct Access to Super Re-use TRX in IUO
BSS6114: Handover Enhancements
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S2 Definition updated in release:S7
Counter ID: 004078 Network element name: CELL SDCCH AT
Version: 4.0 NetAct name: CELL_SDCCH_AT
Description: Number of attempts of intra-cell (SDCCH to SDCCH) HOs.
Updated: When the HO attempt is started.
See figure Successful internal intra-cell SDCCH to SDCCH handover
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
DN9813636 81
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.80 004079 / CAUSE DIR RETRY
2.81 004080 / MSC I END OF HO
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S2 Definition updated in release:
Counter ID: 004079 Network element name: CAUSE DIR RETRY
Version: 4.0 NetAct name: CAUSE_DIR_RETRY
Description: Number of HO attempts due to directed retry.
Updated: See figures:- Internal intra-cell directed retry including software BSS6114: TCH assignment to the super-reuse TRX in IUO- Internal inter-cell directed retry, including software BSS6114 TCH assignment to the super-reuse TRX in IUO- External directed retry, source BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS6114: Handover Enhancements
BSS6115: Radio Channel Allocation Enhancements
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S2 Definition updated in release:S6
Counter ID: 004080 Network element name: MSC I END OF HO
Version: 4.1 NetAct name: MSC_I_END_OF_HO
82 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.82 004081 / BSC I END OF HO
Description: Number of end of handover procedures in incoming HOs that are con-trolled by the MSC.
Dependency:b) Counter 004108 is updated along with this counter.
Impact:- HO failure- Possibly call cleared
Reason for the impact: External/Abis interface
Updated: a) When the MS returns onto the source channel.b) When the MS is lost during the HO.c) When the call is cleared during the HO either by the subscriber, or by messages from the MS concerning - the start of channel blocking - the A interface speech circuits - state changes of the BSSAP subsystem - an abnormal release of the SCCP connec-tiond) When the call is cleared during the HO by a message received from the MSC con-cerning the resetting of the circuits or the BCSU/BCXU restart (if the TCHs related to the HO are in that BCSU/BCXU)
See figures:- Unsuccessful external TCH to TCH handover due to MS returning to the old channel, target BSC- Unsuccessful external TCH to TCH handover, target BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004018: INT CELL SUCCESS HO
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S2 Definition updated in release:
Counter ID: 004081 Network element name: BSC I END OF HO
Version: 4.0 NetAct name: BSC_I_END_OF_HO
DN9813636 83
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.83 004082 / BSC O MS REQ ENQ PROC
Description: Number of end of handover procedures in the incoming HOs that are controlled by the BSC.
Dependencies:a) Counter 004038 is updated along with this counter.b) Counter 004042 is updated along with this counter.c) Counter 004017 is updated along with this counter.
Impact:- HO failure- Possibly call cleared
Reason for the impact: External/Abis interface
Updated: a) When it is not allowed to execute a HO at the current phase of the call.b) When the call is cleared during the HO.c) When the connection between the MS and the BTS is broken (on the source chan-nel), that is, when a message carrying an indication of a connection failure is received (radio link failure or transcoder failure).
See figures:- Unsuccessful internal inter-cell TCH to TCH handover because a handover is not allowed at this phase of the call- Unsuccessful internal inter-cell TCH to TCH handover due to call clearing during handover- Unsuccessful internal inter-cell TCH to TCH handover due to a radio link failure during handover
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004017: BSC O END OF HO DUE BSS
004038: BSC O HO NOT ALLOWED
004042: BSC O CALL CLEAR DURING HO
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S2 Definition updated in release:
Counter ID: 004082 Network element name: BSC O MS REQ ENQ PROC
Version: 4.0 NetAct name: BSC_O_CAND_ENQ
84 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.84 004083 / BSC I DROP CALLS
Description: This counter is not in use.
Updated: This counter is not updated.
Logical type: Trigger type: Sampling interval:
Unit: Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S2 Definition updated in release:S14
Counter ID: 004083 Network element name: BSC I DROP CALLS
Version: 4.0 NetAct name: BSC_I_DROP_CALLS
Description: Number of calls that are dropped during incoming HOs controlled by the BSC.
Dependencies:a) Counters 004012, 004016 and 004084 are updated along with this counter.b) Counters 004013, 004017 and 004084 are updated along with this counter.
Impact: Call cleared
Updated: a) When the MS is lost (timer T3103 expires).b) When switching from a unidirectional to a bi-directional speech path fails.
See figures:- Unsuccessful internal inter-cell TCH to TCH handover due to losing the MS during handover. The GSM timer T3103 expires- Unsuccessful internal inter-cell TCH to TCH handover caused by internal timer expiry or a failure in the connection of a bi-directional speech path
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004012: BSC I UNSUCCESS HO DUE CONN
004013: BSC I UNSUCCESS HO DUE BSS PROBLEM
004016: BSC O END OF HO
004017: BSC O END OF HO DUE BSS
004084: BSC O DROP CALLS
Operability class:
DN9813636 85
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.85 004084 / BSC O DROP CALLS
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S3 Definition updated in release:
Counter ID: 004084 Network element name: BSC O DROP CALLS
Version: 4.0 NetAct name: BSC_O_DROP_CALLS
Description: Number of calls that are dropped during outgoing HOs controlled by the BSC.
Dependencies:a) Counters 004012, 004016 and 004083 are updated along with this counter.b) Counters 004013, 004017 and 004083 are updated along with this counter.
Impact: Call cleared
Updated: a) When the MS is lost (timer T3103 expires).b) When switching from a unidirectional to a bi-directional speech path fails.
See figures:- Unsuccessful internal inter-cell TCH to TCH handover due to losing the MS during handover. The GSM timer T3103 expires- Unsuccessful internal inter-cell TCH to TCH handover caused by internal timer expiry or a failure in the connection of a bi-directional speech path
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004012: BSC I UNSUCCESS HO DUE CONN
004013: BSC I UNSUCCESS HO DUE BSS PROBLEM
004016: BSC O END OF HO
004017: BSC O END OF HO DUE BSS
004083: BSC I DROP CALLS
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S3 Definition updated in release:
86 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.86 004085 / CELL DROP CALLS
2.87 004086 / CAUSE PREEMPTION
Counter ID: 004085 Network element name: CELL DROP CALLS
Version: 4.0 NetAct name: CELL_DROP_CALLS
Description: Number of calls dropped during intra-cell HOs.
Dependencies:a) Counter 004020 is updated along with this counter.b) Counter 004021 is updated along with this counter.
Impact: Call cleared
Updated: a) When the MS is lost (timer T3107 expires).b) When switching from a unidirectional to a bi-directional speech path fails.
See figure Unsuccessful internal intra-cell TCH to TCH handover due to losing the MS during handover. The GSM timer T3107 expires
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004020: INT CELL UNSUCCESS HO DUE MOVE
004021: INT CELL UNSUCCESS HO DUE BSS PROBLEM
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S3 Definition updated in release:
Counter ID: 004086 Network element name: CAUSE PREEMPTION
Version: 4.0 NetAct name: CAUSE_PRE_EMPTION
Description: Number of HO attempts due to pre-emption.
Updated: When a HO is started due to pre-emption.
See figures:- Successful internal intra-cell TCH to TCH handover- Successful internal inter-cell TCH to TCH handover- Successful external TCH to TCH handover, source BSC- Successful internal intra-cell SDCCH to SDCCH handover- Successful internal inter-cell SDCCH to SDCCH handover- Successful external SDCCH to SDCCH handover, source BSC
DN9813636 87
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.88 004087 / CAUSE FIELD DROP
2.89 004088 / CAUSE LOW DISTANCE
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S3 Definition updated in release:
Counter ID: 004087 Network element name: CAUSE FIELD DROP
Version: 4.0 NetAct name: CAUSE_FIELD_DROP
Description: Number of HO attempts caused by rapid field drop.
Updated: When a HO is started due to rapid field drop.
See figures:- Successful internal inter-cell TCH to TCH handover- Successful external TCH to TCH handover, source BSC- Successful internal inter-cell SDCCH to SDCCH handover- Successful external SDCCH to SDCCH handover, source BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S4 Definition updated in release:
Counter ID: 004088 Network element name: CAUSE LOW DISTANCE
Version: 4.0 NetAct name: CAUSE_LOW_DISTANCE
Description: Number of HO attempts caused by low distance.
88 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.90 004089 / CAUSE BAD CI RATIO
Updated: When a HO is started due to low distance.
See figures:- Successful internal intra-cell TCH to TCH handover- Successful internal inter-cell TCH to TCH handover- Successful external TCH to TCH handover, source BSC- Successful internal intra-cell SDCCH to SDCCH handover- Successful internal inter-cell SDCCH to SDCCH handover- Successful external SDCCH to SDCCH handover, source BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S4 Definition updated in release:
Counter ID: 004089 Network element name: CAUSE BAD CI RATIO
Version: 4.0 NetAct name: CAUSE_BAD_CI
Description: Number of HO attempts caused by a poor C/I ratio on the super-reuse frequency.
This counter increases by one either when the downlink C/I ratio of the super-reuse TRX becomes worse or when the MS-BS distance reaches the relevant HO threshold. For more information, see Threshold comparison in Intelligent Underlay-Overlay.
Updated: When a HO is started due to a poor C/I ratio.
See figures:- Successful internal intra-cell TCH to TCH handover- Successful internal inter-cell TCH to TCH handover- Successful internal intra-cell SDCCH to SDCCH handover- Successful internal inter-cell SDCCH to SDCCH handover
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
DN9813636 89
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.91 004090 / CAUSE GOOD CI RATIO
2.92 004091 / HO DUE SLOW MOV MS
3GPP Measurement type:
Exceptions to related standard:
Used from release: S4 Definition updated in release:
Counter ID: 004090 Network element name: CAUSE GOOD CI RATIO
Version: 4.0 NetAct name: CAUSE_GOOD_CI
Description: Number of HO attempts caused by a good C/I ratio on the super-reuse frequency.
Updated: When a HO is started due to a good C/I ratio.
See figures:- Successful internal intra-cell TCH to TCH handover- Successful internal inter-cell TCH to TCH handover- Successful internal intra-cell SDCCH to SDCCH handover- Successful internal inter-cell SDCCH to SDCCH handover
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S4 Definition updated in release:
Counter ID: 004091 Network element name: HO DUE SLOW MOV MS
Version: 4.0 NetAct name: HO_DUE_SLOW_MOV_MS
Description: Number of HOs caused by a slowly moving MS in the macro cell.
Updated: When a HO is started due to a slowly moving MS.
See figures:- Successful internal inter-cell TCH to TCH handover- Successful external TCH to TCH handover, source BSC- Successful internal inter-cell SDCCH to SDCCH handover- Successful external SDCCH to SDCCH handover, source BSC
Logical type: Sum Trigger type: Event Sampling interval:
90 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.93 004092 / MSC I ATT SWITCH CIRC POOL
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S5 Definition updated in release:
Counter ID: 004092 Network element name: MSC I ATT SWITCH CIRC POOL
Version: 4.0 NetAct name: MSC_I_ATT_SWITCH_CIRC_POOL
Description: Number of intra-system HO attempts started due to the cause switch_circuit_pool.
Updated: When the cause switch_circuit_pool is received in the HANDOVER REQUIRED message from the A interface.
See figures:- Successful external TCH to TCH handover, target BSC- Successful external SDCCH to SDCCH handover, target BSC- Unsuccessful external TCH to TCH handover due to a failure in the activation of a new channel, target BSC- Unsuccessful external TCH to TCH handover due to MS returning to the old channel, target BSC- Unsuccessful external TCH to TCH handover because no radio resources are avail-able due to switch_crc_pool, target BSC- Unsuccessful external TCH to TCH handover due to a radio link failure during han-dover, target BSC- Unsuccessful external TCH to TCH handover, target BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004046: MSC I TCH TCH AT
Operability class:
Related to feature:
BSS5010: Half Rate
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
DN9813636 91
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.94 004093 / MSC I SUCC SWITCH CIRC POOL
2.95 004094 / MSC O ATT SWITCH CIRC POOL
Used from release: S5 Definition updated in release:S12
Counter ID: 004093 Network element name: MSC I SUCC SWITCH CIRC POOL
Version: 4.0 NetAct name: MSC_I_SUCC_SWITCH_CIRC_POOL
Description: Number of incoming successful intra-system HOs started due to the cause switch_circuit_pool.
Updated: When the HO due to the cause switch_circuit_pool from the A interface is completed.
See figures:- Successful external TCH to TCH handover, target BSC- Successful external SDCCH to SDCCH handover, target BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004043: MSC I TCH TCH
Operability class:
Related to feature:
BSS5010: Half Rate
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S5 Definition updated in release:S12
Counter ID: 004094 Network element name: MSC O ATT SWITCH CIRC POOL
Version: 4.0 NetAct name: MSC_O_ATT_SWITCH_CIRC_POOL
Description: Number of HO attempts started due to the cause switch_circuit_pool.
Counter 004052 is updated along with this counter.
92 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.96 004095 / MSC O SUCC SWITCH CIRC POOL
Updated: When cause switch_circuit_pool is sent to the A interface in the HANDOVER_REQUIRED message.
See figures:- Successful handover type reselection from an internal intra-cell TCH to TCH handover to an external handover due to switching the circuit pool- Successful handover type reselection from an internal inter-cell TCH to TCH handover to an external handover due to switching the circuit pool
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004052: MSC O TCH TCH AT
Operability class:
Related to feature:
BSS5010: Half Rate
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S5 Definition updated in release:
Counter ID: 004095 Network element name: MSC O SUCC SWITCH CIRC POOL
Version: 4.0 NetAct name: MSC_O_SUCC_SWITCH_CIRC_POOL
Description: Number of successful HOs started due to the cause switch_circuit_pool.
Counter 004049 is updated along with this counter.
Updated: When the HO due to the cause switch_circuit_pool from the A interface is completed.
See figures:- Successful external TCH to TCH handover, source BSC- Successful external SDCCH to SDCCH handover, source BSC- Successful handover type reselection from an internal intra-cell TCH to TCH handover to an external handover due to switching the circuit pool- Successful handover type reselection from an internal inter-cell TCH to TCH handover to an external handover due to switching the circuit pool
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004049: MSC O TCH TCH
DN9813636 93
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.97 004096 / BSC O UNSUCC A INT CIRC TYPE
Operability class:
Related to feature:
BSS5010: Half Rate
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S5 Definition updated in release:
Counter ID: 004096 Network element name: BSC O UNSUCC A INT CIRC TYPE
Version: 4.0 NetAct name: BSC_O_UNSUCC_A_INT_CIRC_TYPE
Description: Number of outgoing HOs that are unsuccessful due to a wrong A inter-face circuit type.
Counter 004097 is updated along with this counter.
Impact: HO failure
Reason for the impact: External /A interface
Updated: When an internal outgoing inter-cell HO attempt is interrupted because the BSC wants to change the A interface circuit pool before TCH allocation.
See figures:- Unsuccessful internal inter-cell TCH to TCH handover because no radio resources are available due to switch_crc_pool- Successful handover type reselection from an internal inter-cell TCH to TCH handover to an external handover due to switching the circuit pool
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004097: BSC I UNSUCC A INT CIRC TYPE
Operability class:
Related to feature:
BSS5010: Half Rate
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S5 Definition updated in release:
94 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.98 004097 / BSC I UNSUCC A INT CIRC TYPE
2.99 004098 / INT UNSUCC A INT CIRC TYPE
Counter ID: 004097 Network element name: BSC I UNSUCC A INT CIRC TYPE
Version: 4.0 NetAct name: BSC_I_UNSUCC_A_INT_CIRC_TYPE
Description: Number of incoming HOs that are unsuccessful due to a wrong A inter-face circuit type.
Counter 004096 is updated along with this counter.
Impact: HO failure
Reason for the impact: External /A interface
Updated: When an internal incoming inter-cell HO attempt is interrupted because the BSC wants to change the A interface circuit pool before TCH allocation.
See figures:- Unsuccessful internal inter-cell TCH to TCH handover because no radio resources are available due to switch_crc_pool- Successful handover type reselection from an internal inter-cell TCH to TCH handover to an external handover due to switching the circuit pool
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004096: BSC O UNSUCC A INT CIRC TYPE
Operability class:
Related to feature:
BSS5010: Half Rate
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S5 Definition updated in release:
Counter ID: 004098 Network element name: INT UNSUCC A INT CIRC TYPE
Version: 4.0 NetAct name: HO_UNSUCC_A_INT_CIRC_TYPE
Description: Number of HOs unsuccessful due to a wrong A interface circuit type.
Impact: HO failure
Reason for the impact: External /A interface
DN9813636 95
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.100 004099 / HO ATT DUE SWITCH CIRC POOL
Updated: When an internal intra-cell HO attempt is interrupted because the BSC wants to change the A interface circuit pool before TCH allocation.
See figures:- Unsuccessful internal intra-cell TCH to TCH handover because no radio resources are available due to switch_crc_pool- Successful handover type reselection from an internal intra-cell TCH to TCH handover to an external handover due to switching the circuit pool
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS5010: Half Rate
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S5 Definition updated in release:
Counter ID: 004099 Network element name: HO ATT DUE SWITCH CIRC POOL
Version: 4.0 NetAct name: HO_ATT_DUE_SWITCH_CIRC_POOL
Description: Number of HO attempts started in order to change the A interface circuit type.
Updated: See figures:- Successful external TCH to TCH handover, source BSC- Successful external SDCCH to SDCCH handover, source BSC- Successful handover type reselection from an internal intra-cell TCH to TCH handover to an external handover due to switching the circuit pool- Successful handover type reselection from an internal inter-cell TCH to TCH handover to an external handover due to switching the circuit pool
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS5010: Half Rate
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
96 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.101 004100 / MSC O ADJ CELL ID ERR
2.102 004101 / MSC I UNSUCC DUE A IF CRC
Exceptions to related standard:
Used from release: S5 Definition updated in release:
Counter ID: 004100 Network element name: MSC O ADJ CELL ID ERR
Version: 4.0 NetAct name: MSC_O_ADJ_CELL_ID_ERR_C
Description: Number of errors in adjacent cell identification.
Impact: HO failure
Reason for the impact: Internal. Information on the adjacent cells is incorrect in the BSS Radio Network Configuration Database in the source BSC
Updated: a) When the BSC notices that the target cell information (BCCH frequency and/or BSIC) received in the HANDOVER_COMMAND message from the MSC differs from that in the source BSDATA (BSS Radio Network Configuration Data-base).b) When the MSC rejects the HO attempt due to the cause invalid_cell during a HO from SDCCH to TCH or from TCH to TCH .
See figures:- Unsuccessful external TCH to TCH handover because the MSC rejects the handover due to various causes, source BSC- Unsuccessful external TCH to TCH handover due to adjacent cell error, source BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS5370: Target Cell Identifier Checking in External Handover
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S5 Definition updated in release:
Counter ID: 004101 Network element name: MSC I UNSUCC DUE A IF CRC
Version: 4.0 NetAct name: MSC_CONTROLLED_IN_HO
DN9813636 97
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.103 004102 / MSC O UNSUCC DUE A IF CRC
Description: Number of incoming unsuccessful intra-system HOs due to a wrong A interface circuit type.
Updated: When the HO attempt ends as a result of a TCH allocation attempt which is unsuccessful because of a mismatch between the requested TCH channel type and the A interface circuit type. The cause switch_circuit_pool is sent in the HANDOVER FAILURE message to the A interface.
See figure Unsuccessful external TCH to TCH handover because no radio resources are available due to switch_crc_pool, target BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS5010: Half Rate
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S5 Definition updated in release:S12
Counter ID: 004102 Network element name: MSC O UNSUCC DUE A IF CRC
Version: 4.0 NetAct name: MSC_CONTROLLED_OUT_HO
Description: Number of HOs that are unsuccessful because of a wrong A interface circuit type.
Impact: HO failure
Reason for the impact: External /A interface
Updated: When an external HO attempt ends with the A interface causes circuit_pool_mismatch or switch_ circuit_pool.
This counter is updated also when a HO attempt initiated by the BSC is interrupted because there is no proper circuit pool or there is no free A interface circuit available in the proper pool.
See figure Unsuccessful external TCH to TCH handover because the MSC rejects the handover due to various causes, source BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
98 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.104 004103 / HO FROM NORMAL TO EXT AREA
2.105 004104 / HO FROM EXT TO NORMAL AREA
Dependencies with other counters:
Operability class:
Related to feature:
BSS5010: Half Rate
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S5 Definition updated in release:
Counter ID: 004103 Network element name: HO FROM NORMAL TO EXT AREA
Version: 4.0 NetAct name: HO_NORMAL_TO_EXT
Description: Number of HOs from normal area to extended area.
Updated: When internal intra-cell HO start reason is cause DISTANCE (4027) and the HO is attempted from normal area to extended area.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS6037: Extended Cell Range
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S6 Definition updated in release:
Counter ID: 004104 Network element name: HO FROM EXT TO NORMAL AREA
Version: 4.0 NetAct name: HO_EXT_TO_NORMAL
Description: Number of HOs from extended area to normal area.
Updated: When internal intra-cell HO is started as a result of the cause LOW_DISTANCE (4088) and the HO attempt is from extended area to normal area.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
DN9813636 99
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.106 004105 / HO DUE TO MS SLOW SPEED
2.107 004106 / HO DUE TO MS HIGH SPEED
Dependencies with other counters:
Operability class:
Related to feature:
BSS6037: Extended Cell Range
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S6 Definition updated in release:
Counter ID: 004105 Network element name: HO DUE TO MS SLOW SPEED
Version: 4.0 NetAct name: HO_DUE_MS_SLOW_SPEED
Description: Number of HOs due to a detected low speed MS.
Updated: When an internal inter-cell or external HO attempt is started because the speed of the MS is below the threshold value LSL (Lower Speed Limit).
See figures:- Successful internal inter-cell TCH to TCH handover- Successful external TCH to TCH handover, source BSC- Successful internal inter-cell SDCCH to SDCCH handover- Successful external SDCCH to SDCCH handover, source BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS6083: MS Speed Detection
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S6 Definition updated in release:
Counter ID: 004106 Network element name: HO DUE TO MS HIGH SPEED
Version: 4.0 NetAct name: HO_DUE_MS_HIGH_SPEED
Description: Number of HOs due to a detected high speed MS.
100 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.108 004107 / MSC O CALL DROP DURING HO
Updated: When an internal inter-cell or external HO attempt is started because the speed of the MS has exceeded the threshold value USL (Upper Speed Limit).
See figures:- Successful internal inter-cell TCH to TCH handover- Successful external TCH to TCH handover, source BSC- Successful internal inter-cell SDCCH to SDCCH handover- Successful external SDCCH to SDCCH handover, source BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS6083: MS Speed Detection
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S6 Definition updated in release:
Counter ID: 004107 Network element name: MSC O CALL DROP DURING HO
Version: 4.0 NetAct name: MSC_O_CALL_DROP_HO
Description: Number of calls that are dropped during external HOs, after HANDOVER_COMMAND is received from the MSC.
Counter 004007 is updated along with this counter.
Impact: Call cleared
Updated: a) When a call is dropped during an external HO and after the BSC has received a HANDOVER_COMMAND message.b) When either the GSM timer T8 expires, or the MSC sends a CLEAR_COMMAND message to the BSC with other cause than call control or handover successful.
See figure Unsuccessful external TCH to TCH handover due to GSM timer T8 expiry, source BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004007: MSC O END OF HO
Operability class:
DN9813636 101
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.109 004108 / MSC I CALL POSS DROP DURING HO
Related to feature:
BSS7042: Measurement Improvements
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S7 Definition updated in release:
Counter ID: 004108 Network element name: MSC I CALL POSS DROP DURING HO
Version: 4.0 NetAct name: MSC_I_CALL_POSS_DROP_HO
Description: Number of failures (the call may possibly be dropped) during external HOs, after the HO_REQUEST_ACK message is sent to the MSC.
Counter 004080 is updated along with this counter.
Impact: Possibly call cleared
Updated: a) When a call is possibly dropped during an external HO, after the HO_REQUEST_ACK message is sent to the MSC.b) When the GSM timer T9113 expires or the MSC sends a CLEAR_COMMAND message to the BSC with some other cause than call control or radio interface failure revision to old channel.
See figure Unsuccessful external TCH to TCH handover, target BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004080: MSC I END OF HO
Operability class:
Related to feature:
BSS7042: Measurement Improvements
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S7 Definition updated in release:
102 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.110 004109 / HO ATT DUE TO BAD RXLEV ON SUPER
2.111 004110 / HO ATT DUE TO GOOD RXLEV ON REGULAR
Counter ID: 004109 Network element name: HO ATT DUE TO BAD RXLEV ON SUPER
Version: 4.0 NetAct name: HO_ATT_DUE_BAD_SUPER_RXLEV
Description: Number of HO attempts due to a Bad Rxlevel on a super-reuse fre-quency.
Updated: When a HO is started due to a Bad Rxlevel on the super-reuse frequency.
See figure Successful internal intra-cell TCH to TCH handover
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS7064: Handover Support for ICE
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S7 Definition updated in release:
Counter ID: 004110 Network element name: HO ATT DUE TO GOOD RXLEV ON REGULAR
Version: 4.0 NetAct name: HO_ATT_DUE_GOOD_REGULAR_RXLEV
Description: Number of HO attempts due to a Good Rxlevel on a regular frequency.
Updated: When a HO is started due to a Good Rxlevel on the regular frequency.
See figure Successful internal intra-cell TCH to TCH handover
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS7064: Handover Support for ICE
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
DN9813636 103
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.112 004111 / HO ATT DUE ERFD
2.113 004112 / MSC O ATT FOR HSCSD
Exceptions to related standard:
Used from release: S7 Definition updated in release:
Counter ID: 004111 Network element name: HO ATT DUE ERFD
Version: 4.0 NetAct name: HO_ATT_DUE_ERFD
Description: Number of inter-cell HO attempts during an ERFD (Enhanced Rapid Field Drop) HO. All inter-cell HOs during ERFD HO are mapped to the ERFD HO counter.
Updated: When a HO is started due to ERFD.
See figures:- Successful internal inter-cell TCH to TCH handover- Successful external TCH to TCH handover, source BSC- Successful internal inter-cell SDCCH to SDCCH handover- Successful external SDCCH to SDCCH handover, source BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS7031: Enhanced Rapid Field Drop
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S7 Definition updated in release:
Counter ID: 004112 Network element name: MSC O ATT FOR HSCSD
Version: 4.0 NetAct name: MSC_O_ATT_HSCSD
Description: Number of outgoing HO attempts for HSCSD calls controlled by the MSC.
Counter 004052 or 004053 will also be updated.
Updated: When a HO attempt for HSCSD connection is started.
See figure Successful external TCH TCH HSCSD handover from two to two channels, source BSC
Logical type: Sum Trigger type: Event Sampling interval:
104 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.114 004113 / MSC O SUCC FOR HSCSD
Unit: Integer number Range: Example values:
Dependencies with other counters:
004052: MSC O TCH TCH AT
004053: MSC O SDCCH TCH AT
Operability class:
Related to feature:
BSS7003: High Speed Circuit Switched Data (HSCSD)
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S7 Definition updated in release:
Counter ID: 004113 Network element name: MSC O SUCC FOR HSCSD
Version: 4.0 NetAct name: MSC_O_SUCC_HSCSD
Description: Number of successful outgoing HOs for HSCSD calls controlled by the MSC.
Counter 004049 or 004050 and counter 004004 will also be updated.
Updated: When a HO attempt for HSCSD connection is completed.
See figure Successful external TCH TCH HSCSD handover from two to two channels, source BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004004: MSC O SUCCESS HO
004049: MSC O TCH TCH
004050: MSC O SDCCH TCH
Operability class:
Related to feature:
BSS7003: High Speed Circuit Switched Data (HSCSD)
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S7 Definition updated in release:
DN9813636 105
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.115 004114 / MSC I ATT FOR HSCSD
2.116 004115 / MSC I SUCC FOR HSCSD
Counter ID: 004114 Network element name: MSC I ATT FOR HSCSD
Version: 4.0 NetAct name: MSC_I_ATT_HSCSD
Description: Number of incoming HO attempts for HSCSD calls controlled by the MSC.
Counter 004046 or 004047 will also be updated.
Updated: When a HO attempt for a multichannel connection is started.
See figures:- Successful external TCH TCH HSCSD handover from four to one channel, target BSC- Successful external TCH TCH HSCSD handover from one to two channels, target BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004046: MSC I TCH TCH AT
004047: MSC I SDCCH TCH AT
Operability class:
Related to feature:
BSS7003: High Speed Circuit Switched Data (HSCSD)
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S7 Definition updated in release:
Counter ID: 004115 Network element name: MSC I SUCC FOR HSCSD
Version: 4.0 NetAct name: MSC_I_SUCC_HSCSD
Description: Number of successful incoming HOs for HSCSD calls controlled by the MSC.
Counter 004043 or 004044 and counter 004000 will also be updated.
106 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.117 004116 / MSC I SUCC INC FOR HSCSD
Updated: When a HO attempt for a multichannel connection is completed.
See figures:- Successful external TCH TCH HSCSD handover from four to one channel, target BSC- Successful external TCH TCH HSCSD handover from one to two channels, target BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004000: MSC I SUCCESS HO
004043: MSC I TCH TCH
004044: MSC I SDCCH TCH
Operability class:
Related to feature:
BSS7003: High Speed Circuit Switched Data (HSCSD)
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S7 Definition updated in release:
Counter ID: 004116 Network element name: MSC I SUCC INC FOR HSCSD
Version: 4.0 NetAct name: MSC_I_SUCC_INC_HSCSD
Description: The number of channels in an MSC-controlled HO for an outgoing HSCSD call has increased.
Updated: When a current channel IE is included in the HANDOVER_REQUEST message and the number of allocated channels is greater in the target cell than in the source cell.
See figure Successful external TCH TCH HSCSD handover from one to two chan-nels, target BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS7003: High Speed Circuit Switched Data (HSCSD)
Related to standard:
3GPP Measurement name (Clause header):
DN9813636 107
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.118 004117 / MSC I SUCC DEC FOR HSCSD
2.119 004118 / BSC O ATT FOR HSCSD
3GPP Measurement type:
Exceptions to related standard:
Used from release: S7 Definition updated in release:
Counter ID: 004117 Network element name: MSC I SUCC DEC FOR HSCSD
Version: 4.0 NetAct name: MSC_I_SUCC_DEC_HSCSD
Description: The number of channels in an MSC-controlled HO for an outgoing HSCSD call has decreased.
Updated: When a current channel IE is included in the HANDOVER_REQUEST message and the number of allocated channels in the target cell is lower than in the source cell.
See figure Successful external TCH TCH HSCSD handover from four to one channel, target BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS7003: High Speed Circuit Switched Data (HSCSD)
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S7 Definition updated in release:
Counter ID: 004118 Network element name: BSC O ATT FOR HSCSD
Version: 4.0 NetAct name: BSC_O_ATT_HSCSD
Description: Number of outgoing HO attempts for HSCSD calls controlled by the BSC.
Counter 004067 or 004068 will also be updated.
Updated: When a HO attempt for a multichannel connection is started.
See figures:- Successful internal inter-cell TCH TCH HSCSD handover from three to one channel- Successful internal inter-cell TCH TCH HSCSD handover from two to three channels
108 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.120 004119 / BSC O SUCC FOR HSCSD
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004067: BSC O TCH TCH AT
004068: BSC O SDCCH TCH AT
Operability class:
Related to feature:
BSS7003: High Speed Circuit Switched Data (HSCSD)
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S7 Definition updated in release:
Counter ID: 004119 Network element name: BSC O SUCC FOR HSCSD
Version: 4.0 NetAct name: BSC_O_SUCC_HSCSD
Description: Number of successful outgoing HOs for HSCSD calls controlled by the BSC.
Counter 004064 or 004065 and counter 004014 will also be updated.
Updated: When a HO attempt for multichannel connection is completed.
See figures:- Successful internal inter-cell TCH TCH HSCSD handover from three to one channel- Successful internal inter-cell TCH TCH HSCSD handover from two to three channels
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004064: BSC O TCH TCH
004065: BSC O SDCCH TCH
Operability class:
Related to feature:
BSS7003: High Speed Circuit Switched Data (HSCSD)
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S7 Definition updated in release:
DN9813636 109
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.121 004120 / BSC I ATT FOR HSCSD
2.122 004121 / BSC I SUCC FOR HSCSD
Counter ID: 004120 Network element name: BSC I ATT FOR HSCSD
Version: 4.0 NetAct name: BSC_I_ATT_HSCSD
Description: Number of incoming HO attempts for HSCSD calls controlled by the BSC.
Counter 004059 or 004060 will also be updated.
Updated: When a HO attempt for a multichannel connection is started.
See figures:- Successful internal inter-cell TCH TCH HSCSD handover from three to one channel- Successful internal inter-cell TCH TCH HSCSD handover from two to three channels
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004059: BSC I TCH TCH AT
004060: BSC I SDCCH TCH AT
Operability class:
Related to feature:
BSS7003: High Speed Circuit Switched Data (HSCSD)
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S7 Definition updated in release:
Counter ID: 004121 Network element name: BSC I SUCC FOR HSCSD
Version: 4.0 NetAct name: BSC_I_SUCC_HSCSD
Description: Number of successful incoming HOs for HSCSD calls controlled by the BSC.
Counter 004056 or 004057 and counter 004010 will also be updated.
Updated: When a HO attempt for a multichannel connection is completed.
See figures:- Successful internal inter-cell TCH TCH HSCSD handover from three to one channel- Successful internal inter-cell TCH TCH HSCSD handover from two to three channels
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
110 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.123 004122 / BSC I SUCC INC FOR HSCSD
2.124 004123 / BSC I SUCC DEC FOR HSCSD
Dependencies with other counters:
004010: BSC I SUCCESS HO
004056: BSC I TCH TCH
004057: BSC I SDCCH TCH
Operability class:
Related to feature:
BSS7003: High Speed Circuit Switched Data (HSCSD)
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S7 Definition updated in release:
Counter ID: 004122 Network element name: BSC I SUCC INC FOR HSCSD
Version: 4.0 NetAct name: BSC_I_SUCC_INC_HSCSD
Description: The number of channels in an BSC-controlled HO for an outgoing HSCSD call has increased.
Updated: When a number of allocated channels in the target cell is greater than in the source cell.
See figure Successful internal inter-cell TCH TCH HSCSD handover from two to three channels
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS7003: High Speed Circuit Switched Data (HSCSD)
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S7 Definition updated in release:
Counter ID: 004123 Network element name: BSC I SUCC DEC FOR HSCSD
Version: 4.0 NetAct name: BSC_I_SUCC_DEC_HSCSD
DN9813636 111
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.125 004124 / INTRA ATT FOR HSCSD
Description: The number of channels in an BSC-controlled HO for an outgoing HSCSD call has decreased.
Updated: When a number of allocated channels in the target cell is lower than in the source cell.
See figure Successful internal inter-cell TCH TCH HSCSD handover from three to one channel
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS7003: High Speed Circuit Switched Data (HSCSD)
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S7 Definition updated in release:
Counter ID: 004124 Network element name: INTRA ATT FOR HSCSD
Version: 4.0 NetAct name: INTRA_ATT_HSCSD
Description: Number of intra-cell HO attempts for HSCSD calls.
Counter 004076 or 004077 will also be updated.
Updated: When a HO attempt for multichannel connection is started.
See figures:- Successful internal intra-cell TCH TCH HSCSD handover from two to one channel- Successful internal intra-cell TCH TCH HSCSD handover from one to three channels
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS7003: High Speed Circuit Switched Data (HSCSD)
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
112 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.126 004125 / INTRA SUCC FOR HSCSD
2.127 004126 / INTRA SUCC INC FOR HSCSD
Used from release: S7 Definition updated in release:
Counter ID: 004125 Network element name: INTRA SUCC FOR HSCSD
Version: 4.0 NetAct name: INTRA_SUCC_HSCSD
Description: Number of successful intra-cell HOs for HSCSD calls.
Counter 004073 or 004074 and counter 004018 will also be updated.
Updated: When a HO attempt for multichannel connection is completed.
See figures:- Successful internal intra-cell TCH TCH HSCSD handover from two to one channel- Successful internal intra-cell TCH TCH HSCSD handover from one to three channels
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004073: CELL TCH TCH
004074: CELL SDCCH TCH
Operability class:
Related to feature:
BSS7003: High Speed Circuit Switched Data (HSCSD)
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S7 Definition updated in release:
Counter ID: 004126 Network element name: INTRA SUCC INC FOR HSCSD
Version: 4.0 NetAct name: INTRA_SUCC_INC_HSCSD
Description: The number of channels in intra-cell HOs for an HSCSD call has increased.
Updated: When the number of allocated channels in the target TRX is greater than in the source TRX.
See figure Successful internal intra-cell TCH TCH HSCSD handover from one to three channels
DN9813636 113
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.128 004127 / INTRA SUCC DEC FOR HSCSD
2.129 004128 / HO ATT DUE TO DIRECT ACCESS
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS7003: High Speed Circuit Switched Data (HSCSD)
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S7 Definition updated in release:
Counter ID: 004127 Network element name: INTRA SUCC DEC FOR HSCSD
Version: 4.0 NetAct name: INTRA_SUCC_DEC_HSCSD
Description: The number of channels in intra-cell HOs for a HSCSD call has decreased.
Updated: When a number of allocated channels in the target TRX is lower than in the source TRX.
See figure Successful internal intra-cell TCH TCH HSCSD handover from two to one channel
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS7003: High Speed Circuit Switched Data (HSCSD)
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S7 Definition updated in release:
Counter ID: 004128 Network element name: HO ATT DUE TO DIRECT ACCESS
Version: 4.0 NetAct name: HO_ATT_DUE_DIRECT_ACCESS
114 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.130 004129 / HO ATT DUE TO DADLB
Description: Number of direct access attempts.
In the HO measurement, an intra-cell direct access is considered an intra-cell HO and correspondingly, an inter-cell direct access is considered an inter-cell HO.
Updated: When a HO is started with the cause direct access.
See figures:- Internal intra-cell direct access from regular DCCH to a super-reuse TRX
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS7057: Direct Access to Super Re-use TRX in IUO
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S7 Definition updated in release:
Counter ID: 004129 Network element name: HO ATT DUE TO DADLB
Version: 4.0 NetAct name: HO_ATT_DUE_TO_DADLB
Description: The number of handover attempts started due to Direct Access to Desired Layer/Band (DADL/B).
Updated: When a HO is started with the cause DADL/B.
See figure Handover attempt due to DADL/B
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS8032: Direct Access to Desired Layer/Band
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S8 Definition updated in release:
DN9813636 115
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.131 004130 / HO ATT DUE TO GPRS
2.132 004131 / INTRA CELL SUCCESS SDCCH HO BETWEEN BTSS
Counter ID: 004130 Network element name: HO ATT DUE TO GPRS
Version: 4.0 NetAct name: HO_ATT_DUE_TO_GPRS
Description: The number of handover attempts is started due to GPRS channel allo-cation.
Updated: When a HO is started with the request of the radio resource manager in order to enable an upgrade to the GPRS territory.
NOTE! This counter may show some values even if there has been no GPRS Traffic. Since the GPRS Territory method operates according to CS Traffic, this may cause upgrades and downgrades to the GPRS Territory and subsequently cause handovers to CS Calls triggering this counter.
See figure Successful internal intra-cell TCH to TCH handover
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS09006: General Packet Radio Service (GPRS)
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S9 Definition updated in release:
Counter ID: 004131 Network element name: INTRA CELL SUCCESS SDCCH HO BETWEEN BTSS
Version: 4.0 NetAct name: INTRA_CELL_SDCCH_HO_BTSS
Description: Number of completed and successful SDCCH-SDCCH handovers between two BTSs of the segment.
Updated: At the target BTS when the call has been successfully transferred to the target SDCCH.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
116 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.133 004132 / INTRA CELL SUCCESS TCH HO BETWEEN BTSS
2.134 004133 / HO ATTEMPT INTER BAND SDCCH
Related to feature:
BSS10016: Common BCCH Control
BSS10046: Multi BCF Control
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S10 Definition updated in release:
Counter ID: 004132 Network element name: INTRA CELL SUCCESS TCH HO BETWEEN BTSS
Version: 4.0 NetAct name: INTRA_CELL_TCH_HO_BTSS
Description: Number of completed and successful TCH to TCH handovers between the BTSs of the segment.
Updated: At the target BTS when the call has been successfully transferred to the target TCH.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS10016: Common BCCH Control
BSS10046: Multi BCF Control
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S10 Definition updated in release:
Counter ID: 004133 Network element name: HO ATTEMPT INTER BAND SDCCH
Version: 4.0 NetAct name: HO_ATT_INTER_BAND_SDCCH
DN9813636 117
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.135 004134 / INTRA CELL SUCCESS SDCCH HO BETWEEN BANDS
Description: Number of attempts to perform an SDCCH-SDCCH handover, based on the duration of an SDCCH reservation, from a BTS on the BCCH frequency band to a BTS on another frequency band of the segment.
Information on the success of the attempts can be seen on BSC level in counter 051136.
Updated: At the source BTS on BCCH frequency band whenever a handover attempt is made to move a call to an SDCCH on another frequency band of the segment. PGSM 900 and EGSM 900 are here regarded as different bands.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
051136: INTRA INTER BAND SDCCH HANDOVER
Operability class:
Related to feature:
BSS10016: Common BCCH Control
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S10 Definition updated in release:
Counter ID: 004134 Network element name: INTRA CELL SUCCESS SDCCH HO BETWEEN BANDS
Version: 4.0 NetAct name: INTRA_CELL_SDCCH_HO_BANDS
Description: Number of completed and successful SDCCH-SDCCH handovers between two BTSs on different frequency bands of a segment. PGSM 900 and EGSM 900 are regarded as parts of the same GSM 900 frequency band.
Counter 004131 is updated along with this counter.
Updated: At the target BTS when the call has been successfully transferred to the target SDCCH.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004131: INTRA CELL SUCCESS SDCCH HO BETWEEN BTSS
Operability class:
118 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.136 004135 / HO ATTEMPT INTER BAND TCH
2.137 004136 / INTRA CELL SUCCESS TCH HO BETWEEN BANDS
Related to feature:
BSS10016: Common BCCH Control
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S10 Definition updated in release:
Counter ID: 004135 Network element name: HO ATTEMPT INTER BAND TCH
Version: 4.0 NetAct name: HO_ATT_INTER_BAND_TCH
Description: Number of attempts to perform a TCH to TCH handover between BTSs on different frequency bands of a segment due to load.
Information on the success of the attempts can be seen on BSC level in counter 051135.
Updated: At the source BTS whenever a handover is initiated in order to move a call to another band of the segment and, as a result, to decrease the load of the source BTS. PGSM 900 and EGSM 900 are regarded here as different bands.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
051135: INTRA INTER BAND TCH HANDOVER
Operability class:
Related to feature:
BSS10016: Common BCCH Control
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S10 Definition updated in release:
Counter ID: 004136 Network element name: INTRA CELL SUCCESS TCH HO BETWEEN BANDS
Version: 4.0 NetAct name: INTRA_CELL_TCH_HO_BANDS
DN9813636 119
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.138 004137 / HO ATTEMPT INTER BTS TYPE SDCCH
Description: Number of completed and successful TCH to TCH handovers between two BTSs on different frequency bands of a segment. PGSM 900 and EGSM 900 are regarded as parts of the same GSM 900 frequency band.
Counter 004132 is updated along with this counter.
Updated: At the target BTS when the call has been successfully transferred to the target TCH between GSM 900 and GSM 1800 bands in either direction.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004132: INTRA CELL SUCCESS TCH HO BETWEEN BTSS
Operability class:
Related to feature:
BSS10016: Common BCCH Control
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S10 Definition updated in release:
Counter ID: 004137 Network element name: HO ATTEMPT INTER BTS TYPE SDCCH
Version: 4.0 NetAct name: HO_ATT_INTER_BTS_TYPE_SDCCH
Description: Number of attempts to perform an SDCCH to SDCCH handover, based on the duration of an SDCCH reservation, from a BTS of some base station site type to a BTS of another type within a segment.
Information on the success of the attempts on BSC level can be seen in counter 051148.
Updated: At the source BTS whenever an attempt is made to move a call from an SDCCH in a BTS of some base station site type to an SDCCH in a BTS of another type in the segment, based on the duration of the source SDCCH reservation. Note that this counter is not updated when the handover attempt is made between the resources of different base station site types if the resources are also of different fre-quency bands. In such cases counter 004133 is updated instead.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
051148: INTRA INTER BTS TYPE SDC
Operability class:
120 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.139 004138 / INTRA CELL SUCCESS SDCCH HO BETWEEN BTS TYPES
2.140 004139 / HO ATTEMPT INTER BTS TYPE TCH
Related to feature:
BSS10046: Multi BCF Control
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S10 Definition updated in release:S11
Counter ID: 004138 Network element name: INTRA CELL SUCCESS SDCCH HO BETWEEN BTS TYPES
Version: 4.0 NetAct name: INTRA_CELL_SDCCH_HO_BTS_TYPES
Description: Number of completed and successful SDCCH to SDCCH handovers from a BTS of one base station site type to a BTS of another type within a segment.
Counter 004131 is updated along with this counter.
Updated: At the target BTS when the call has been successfully transferred to the target SDCCH and the handover was between BTSs of different base station site types within a segment.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004131: INTRA CELL SUCCESS SDCCH HO BETWEEN BTSS
Operability class:
Related to feature:
BSS10046: Multi BCF Control
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S10 Definition updated in release:
Counter ID: 004139 Network element name: HO ATTEMPT INTER BTS TYPE TCH
Version: 4.0 NetAct name: HO_ATT_INTER_BTS_TYPE_TCH
DN9813636 121
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.141 004140 / INTRA CELL SUCCESS TCH HO BETWEEN BTS TYPES
Description: Number of attempts to perform a TCH to TCH handover between differ-ent BTS types due to load reasons within a segment.
Information on the success of the attempts on BSC level can be seen in counter 051147.
Updated: At the source BTS whenever an attempt is made to move a call between different BTS types in order to decrease the load of the source BTS.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
051147: INTRA INTER BTS TYPE TCH
Operability class:
Related to feature:
BSS10046: Multi BCF Control
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S10 Definition updated in release:
Counter ID: 004140 Network element name: INTRA CELL SUCCESS TCH HO BETWEEN BTS TYPES
Version: 4.0 NetAct name: INTRA_CELL_TCH_HO_BTS_TYPES
Description: Number of completed and successful TCH to TCH handovers from a BTS of one base station site type to a BTS of another type within a segment.
Counter 004132 is updated along with this counter.
Updated: At the target BTS when the call has been successfully transferred to the target TCH and the handover was between BTSs of different base station site types within a segment.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004132: INTRA CELL SUCCESS TCH HO BETWEEN BTSS
Operability class:
Related to feature:
BSS10046: Multi BCF Control
Related to standard:
3GPP Measurement name (Clause header):
122 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.142 004141 / HO ATT DUE TO HSCSD
2.143 004142 / HO ATT FOR AMR TO HR
3GPP Measurement type:
Exceptions to related standard:
Used from release: S10 Definition updated in release:
Counter ID: 004141 Network element name: HO ATT DUE TO HSCSD
Version: 4.0 NetAct name: HO_ATT_DUE_TO_HSCSD
Description: Number of intra cell handover attempts that are made due to the HSCSD traffic.
Updated: When an intra cell handover attempt is initiated for a single slot call in order to enable an upgrade for an GSCSD call.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS7003: High Speed Circuit Switched Data (HSCSD)
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S10 Definition updated in release:
Counter ID: 004142 Network element name: HO ATT FOR AMR TO HR
Version: 4.0 NetAct name: HO_ATT_FOR_AMR_TO_HR
Description: Number of HO attempts from AMR FR to AMR HR.
Updated: When a channel rate change HO attempt for AMR FR call is started.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS10004: Adaptive Multi Rate (AMR) Speech Codec
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
DN9813636 123
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.144 004143 / HO ATT FOR AMR TO FR
2.145 004144 / MSC I TCH HO FROM WCDMA RAN ATTEMPT
Exceptions to related standard:
Used from release: S10 Definition updated in release:
Counter ID: 004143 Network element name: HO ATT FOR AMR TO FR
Version: 4.0 NetAct name: HO_ATT_FOR_AMR_TO_FR
Description: Number of HO attempts from AMR HR to AMR FR.
Updated: When a channel rate change HO attempt for AMR HR call is started.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS10004: Adaptive Multi Rate (AMR) Speech Codec
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S10 Definition updated in release:
Counter ID: 004144 Network element name: MSC I TCH HO FROM WCDMA RAN ATTEMPT
Version: 4.0 NetAct name: MSC_TCH_HO_FROM_WCDMA_RAN_ATT
Description: Number of incoming (UTRAN to GSM) inter-system handover attempts.
Updated: When the HO attempt from UTRAN to GSM is started.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS10101: Inter-System Handover
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
124 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.146 004145 / MSC I WCDMA RAN HO ATTEMPT UNSUCC DUE LACK
2.147 004146 / MSC I WCDMA RAN HO ATTEMPT UNSUCC DUE BSS PROBLEM
Used from release: S10.5 Definition updated in release:
Counter ID: 004145 Network element name: MSC I WCDMA RAN HO ATTEMPT UNSUCC DUE LACK
Version: 4.0 NetAct name: MSC_WCDMARAN_HO_ATT_UNSUC_LACK
Description: Number of incoming (UTRAN to GSM) handover requests rejected by the BSC due to lack of resources.
Updated: No channel is available for a HO and the HANDOVER_FAILURE message is sent to the MSC when UTRAN to GSM handover has been requested.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS10101: Inter-System Handover
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S10.5 Definition updated in release:
Counter ID: 004146 Network element name: MSC I WCDMA RAN HO ATTEMPT UNSUCC DUE BSS PROBLEM
Version: 4.0 NetAct name: MSC_WCDMA_RAN_HO_ATT_UNSUC_BSS
Description: Number of incoming (UTRAN to GSM) handovers which are unsuccess-ful due to BSS problems.
Updated: Radio channel activation fails and the HANDOVER_FAILURE message is sent to the MSC when UTRAN to GSM handover has been requested.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
DN9813636 125
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.148 004147 / MSC I WCDMA RAN END OF HO
Related to feature:
BSS10101: Inter-System Handover
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S10.5 Definition updated in release:
Counter ID: 004147 Network element name: MSC I WCDMA RAN END OF HO
Version: 4.1 NetAct name: MSC_WCDMA_RAN_END_OF_HO
Description: Number of the end of inter-system handover procedures in incoming (UTRAN to GSM) HOs.
Updated: When the call is cleared during the HO by a message received from the MSC concerning resetting the circuits or the BSCU/BCXU restart (if the TCHs related to the HO are in that BCSU/BCXU).
This may occur in the following situations:- MS returns to the source channel- MS is lost during the HO- Call is cleared during the HO either by the subscriber or by messages from the MS concerning -> the start of channel blocking -> the A interface speech circuits -> state changes of the BSSAP subsystem -> abnormal release of the SCCP connection
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS10101: Inter-System Handover
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S10.5 Definition updated in release:
126 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.149 004148 / MSC I UNSUCCESS HO WCDMA RAN DUE CONN
2.150 004149 / MSC I HO WCDMA RAN TCH SUCCESS
Counter ID: 004148 Network element name: MSC I UNSUCCESS HO WCDMA RAN DUE CONN
Version: 4.0 NetAct name: MSC_UNSUC_HO_WCDMARAN_DUE_CONN
Description: Number of incoming (UTRAN to GSM) inter-system HOs which are unsuccessful due to a connection failure.
Updated: When the connection between the MS and the BTS is broken (on the target channel), that is, when a message carrying an indication of a connection failure is received (radio link failure or transcoder failure).
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS10101: Inter-System Handover
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S10.5 Definition updated in release:
Counter ID: 004149 Network element name: MSC I HO WCDMA RAN TCH SUCCESS
Version: 4.0 NetAct name: MSC_HO_WCDMA_RAN_SUCC
Description: Number of successfully completed incoming (UTRAN to GSM) han-dovers.
Updated: When the inter-system handover (UTRAN to GSM) is acknowledged and completed, that is, the HANDOVER_REQUEST_ACKNOWLEDGE and the HANDOVER_COMPLETED messages are sent to the MSC.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS10101: Inter-System Handover
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
DN9813636 127
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.151 004150 / MSC O TCH HO TO WCDMA RAN ATTEMPT
2.152 004151 / MSC O HO TO WCDMA RAN NOT ALLOWED
Exceptions to related standard:
Used from release: S10.5 Definition updated in release:
Counter ID: 004150 Network element name: MSC O TCH HO TO WCDMA RAN ATTEMPT
Version: 4.0 NetAct name: MSC_TCH_HO_WCDMA_RAN_ATT
Description: Number of outgoing (GSM to WCDMA RAN) HO attempts controlled by the MSC. Signal strength (Ec/No) and the load of the serving GSM cell are above the thresholds.
Updated: The HANDOVER_REQUIRED message is sent to the MSC and the HO attempt is started.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS10101: Inter-System Handover
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S10.5 Definition updated in release:
Counter ID: 004151 Network element name: MSC O HO TO WCDMA RAN NOT ALLOWED
Version: 4.0 NetAct name: MSC_HO_TO_WCDMA_RAN_NOT_ALLOW
Description: Number of outgoing (GSM to WCDMA RAN) inter-system HOs controlled by the MSC which are unsuccessful because HOs are not allowed.
Updated: The BSC does not send the HANDOVER_REQUIRED message to the MSC. When it is not allowed to execute an inter-system HO in the current phase of the call in progress.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
128 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.153 004152 / MSC O END OF HO TO WCDMA RAN DUE BSS
2.154 004153 / MSC O GEN INTER SYSTEM TO WCDMA RAN HANDOVER REQ MESSAGES
Related to feature:
BSS10101: Inter-System Handover
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S10.5 Definition updated in release:
Counter ID: 004152 Network element name: MSC O END OF HO TO WCDMA RAN DUE BSS
Version: 4.0 NetAct name: MSC_END_OF_HO_WCDMARAN_DUE_BSS
Description: Number of the end of outgoing (GSM to WCDMA RAN) handover proce-dures due to BSS problems (outgoing HO controlled by the MSC).
Updated: When the connection between the MS and the BTS is broken (on the source channel), that is, when a message carrying an indication of connection failure is received (radio link failure or transcoder failure).
The counter is updated for- non-transparent data calls- transparent data calls- speech calls
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS10101: Inter-System Handover
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S10.5 Definition updated in release:
Counter ID: 004153 Network element name: MSC O GEN INTER SYSTEM TO WCDMA RAN HANDOVER REQ MESSAGES
DN9813636 129
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.155 004154 / MSC O GEN INTER SYSTEM TO WCDMA RAN HANDOVER COM MESSAGES
Version: 4.0 NetAct name: MSC_GEN_SYS_WCDMA_RAN_HO_REQ
Description: Total number of the HANDOVER_REQUIRED messages generated by outgoing (GSM to WCDMA RAN) inter-system HOs controlled by the MSC.
Updated: When the BSC sends the HANDOVER_REQUIRED message to the MSC.
The counter is updated for- non-transparent data calls- transparent data calls- speech calls
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS10101: Inter-System Handover
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S10.5 Definition updated in release:
Counter ID: 004154 Network element name: MSC O GEN INTER SYSTEM TO WCDMA RAN HANDOVER COM MESSAGES
Version: 4.0 NetAct name: MSC_GEN_SYS_WCDMA_RAN_HO_COM
Description: Number of the INTER_SYSTEM_HANDOVER_TO_WCDMA_RAN_COMMAND messages gener-ated by outgoing (GSM to WCDMA RAN) inter-system HOs controlled by the MSC.
Updated: When HANDOVER COMMAND is sent to the MS.
The counter is updated for- non-transparent data calls- transparent data calls- speech calls
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
130 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.156 004155 / MSC O TO WCDMA RAN FAIL LACK
2.157 004156 / MSC O END OF HO TO WCDMA RAN
Related to feature:
BSS10101: Inter-System Handover
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S10.5 Definition updated in release:
Counter ID: 004155 Network element name: MSC O TO WCDMA RAN FAIL LACK
Version: 4.0 NetAct name: MSC_TO_WCDMA_RAN_FAIL_LACK
Description: Number of outgoing (GSM to WCDMA RAN) inter-system HOs controlled by the MSC which are unsuccessful due to no radio resources available in the target cell.
Updated: The BSC has received the HANDOVER_REQUIRED_REJECT message from the MSC- when no channel is available in the target cell for an HO- when the GSM timer T7 expires.
The counter is updated for- non-transparent data calls- transparent data calls- speech calls
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS10101: Inter-System Handover
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S10.5 Definition updated in release:
Counter ID: 004156 Network element name: MSC O END OF HO TO WCDMA RAN
Version: 4.0 NetAct name: MSC_END_OF_HO_TO_WCDMA_RAN
DN9813636 131
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.158 004157 / MSC O CALL DROP DURING HO TO WCDMA RAN
Description: Number of the end of handover procedures for outgoing (GSM to WCDMA RAN) HO controlled by the MSC.
Updated: - When the GSM timer T3121 expires (the CLEAR_COMMAND message not received).- When the HO is rejected with the cause differing from the cause cip_type_mismatch, or invalid_cell, T7 expiry, no radio resource available or no terrestrial channel avail-able in the target cell.- When the MSC sends a CLEAR_COMMAND message with another reason than handover successful or call control to the BSC.- Internal conflict with the A interface.
The counter is updated for- non-transparent data calls- transparent data calls- speech calls
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S10.5 Definition updated in release:
Counter ID: 004157 Network element name: MSC O CALL DROP DURING HO TO WCDMA RAN
Version: 4.0 NetAct name: MSC_CALL_DROP_HO_WCDMA_RAN
Description: Number of dropped calls during outgoing (GSM to WCDMA RAN) HOs after HANDOVER COMMAND is received from the MSC.
Updated: When a call is dropped during an external HO after the BSC has received a HANDOVER_COMMAND message. That is,- When either the GSM timer T8 expires- When the MSC sends a CLEAR_COMMAND message to the BSC with other cause than call control or handover successful.
The counter is updated for- non-transparent data calls- transparent data calls- speech calls
Logical type: Sum Trigger type: Event Sampling interval:
132 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.159 004158 / MSC O TO WCDMA RAN SUCCESS TCH HO
2.160 004159 / SUCCESSFUL HO INTER BAND TCH
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS10101: Inter-System Handover
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S10.5 Definition updated in release:
Counter ID: 004158 Network element name: MSC O TO WCDMA RAN SUCCESS TCH HO
Version: 4.0 NetAct name: MSC_TO_WCDMA_RAN_SUCC_TCH_HO
Description: Number of successful outgoing (GSM to WCDMA RAN) HOs controlled by the MSC.
Updated: When the inter-system HO is completed and BSC has received CLEAR_COMMAND from the MSC.
The counter is updated for- non-transparent data calls- transparent data calls- speech calls
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS10101: Inter-System Handover
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S10.5 Definition updated in release:
Counter ID: 004159 Network element name: SUCCESSFUL HO INTER BAND TCH
DN9813636 133
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.161 004160 / SUCCESSFUL HO INTER BTS TYPE TCH
Version: 4.0 NetAct name: SUCCESSFUL_HO_INTER_BAND_TCH
Description: Number of successful and completed TCH-TCH handovers between BTSs of different frequency bands of a segment due to load.
Counter 004135 is updated in the source BTS of the handover.
Updated: At the target BTS when the call has been successfully transferred to the target TCH.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004135: HO ATTEMPT INTER BAND TCH
Operability class:
Related to feature:
BSS10118: Common BCCH for GSM800/GSM1900
BSS10016: Common BCCH Control
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S10.5 Definition updated in release:
Counter ID: 004160 Network element name: SUCCESSFUL HO INTER BTS TYPE TCH
Version: 4.0 NetAct name: SUCCESFUL_HO_INTER_BTSTYPE_TCH
Description: Number of successful and completed TCH-TCH handovers between dif-ferent BTS types of a segment due to load.
Counter 004139 is updated in the source BTS of the handover.
Updated: At the target BTS when the call has been successfully transferred to the target TCH.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004139: HO ATTEMPT INTER BTS TYPE TCH
Operability class:
Related to feature:
BSS10046: Multi BCF Control
Related to standard:
134 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.162 004161 / UNSUCCESSFUL HO INTER BAND TCH
2.163 004162 / UNSUCCESSFUL HO INTER BTS TYPE TCH
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S10.5 Definition updated in release:
Counter ID: 004161 Network element name: UNSUCCESSFUL HO INTER BAND TCH
Version: 4.0 NetAct name: UNSUCCESSFUL_HO_INTER_BAND_TCH
Description: Number of unsuccessful TCH-TCH handovers between BTSs of different frequency bands of a segment due to load.
Counter 004135 is updated in the source BTS of the handover.
Updated: At the source BTS.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004135: HO ATTEMPT INTER BAND TCH
Operability class:
Related to feature:
BSS10118: Common BCCH for GSM800/GSM1900
BSS10016: Common BCCH Control
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S10.5 Definition updated in release:
Counter ID: 004162 Network element name: UNSUCCESSFUL HO INTER BTS TYPE TCH
Version: 4.0 NetAct name: UNSUCESFUL_HO_IN_BTS_TYPE_TCH
Description: Number of unsuccessful TCH-TCH handovers between different BTS types of a segment due to load.
Counter 004139 is updated in the source BTS of the handover.
Updated: At the source BTS.
DN9813636 135
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.164 004163 / HO ATTEMPT INTER BAND DUE LEVEL
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004139: HO ATTEMPT INTER BTS TYPE TCH
Operability class:
Related to feature:
BSS10046: Multi BCF Control
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S10.5 Definition updated in release:
Counter ID: 004163 Network element name: HO ATTEMPT INTER BAND DUE LEVEL
Version: 4.0 NetAct name: HO_ATTEMPT_INTERBAND_DUE_LEVEL
Description: Number of attempts to perform a TCH-TCH handover from non-BCCH layer between BTSs on different frequency bands of a segment due to weak downlink signal level.
Success of the attempts can be seen on BSC level in counter 051135.
Updated: At the source BTS whenever a handover is initiated to move a call to another band of the segment due to weak downlink signal level. PGSM 900 and EGSM 900 are regarded here as different bands.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
051135: INTRA INTER BAND TCH HANDOVER
Operability class:
Related to feature:
BSS10118: Common BCCH for GSM800/GSM1900
BSS10016: Common BCCH Control
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S10.5 Definition updated in release:
136 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.165 004164 / UNSUCC HO INTER BAND DUE LEVEL
2.166 004165 / SUCC HO INTER BAND DUE LEVEL
Counter ID: 004164 Network element name: UNSUCC HO INTER BAND DUE LEVEL
Version: 4.0 NetAct name: UNSUCC_HO_INTER_BAND_DUE_LEVEL
Description: Number of unsuccessful attempts to perform a TCH-TCH handover from non-BCCH layer between BTSs on different frequency bands of a segment due to weak downlink signal level. Counter 004163 is updated in the source BTS.
Updated: At the source BTS when a handover to move a call to another band of the segment due to weak downlink signal level fails. PGSM 900 and EGSM 900 are regarded here as different bands.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004169: INTER SEGMENT SUCCESS TCH HO BETWEEN BTS TYPES
Operability class:
Related to feature:
BSS10118: Common BCCH for GSM800/GSM1900
BSS10016: Common BCCH Control
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S10.5 Definition updated in release:
Counter ID: 004165 Network element name: SUCC HO INTER BAND DUE LEVEL
Version: 4.0 NetAct name: SUCC_HO_INTER_BAND_DUE_LEVEL
Description: Number of successful attempts to perform a TCH-TCH handover from non-BCCH layer between BTSs on different frequency bands of a segment due to weak downlink signal level. Counter 004163 is updated in the source BTS.
Updated: At the target BTS when a handover to move a call to another band of the segment due to weak downlink signal level succeeds. PGSM 900 and EGSM 900 are regarded here as different bands.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
DN9813636 137
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.167 004166 / INTER SEGMENT SUCCESS SDCCH HO BETWEEN BANDS
Dependencies with other counters:
004169: INTER SEGMENT SUCCESS TCH HO BETWEEN BTS TYPES
Operability class:
Related to feature:
BSS10118: Common BCCH for GSM800/GSM1900
BSS10016: Common BCCH Control
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S10.5 Definition updated in release:
Counter ID: 004166 Network element name: INTER SEGMENT SUCCESS SDCCH HO BETWEEN BANDS
Version: 4.0 NetAct name: IN_SEG_SUCC_SDCCH_HO_BTW_BANDS
Description: Number of completed and successful SDCCH-SDCCH handovers between two BTSs on different frequency bands between two segments.
Counters 004058 and 004066 are updated along with this counter.
Updated: At the target BTS when the call has been successfully transferred to the target SDCCH.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004058: BSC I SDCCH
004066: BSC O SDCCH
Operability class:
Related to feature:
BSS10118: Common BCCH for GSM800/GSM1900
BSS10016: Common BCCH Control
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S10.5 Definition updated in release:
138 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.168 004167 / INTER SEGMENT SUCCESS SDCCH HO BETWEEN BTS TYPES
2.169 004168 / INTER SEGMENT SUCCESS TCH HO BETWEEN BANDS
Counter ID: 004167 Network element name: INTER SEGMENT SUCCESS SDCCH HO BETWEEN BTS TYPES
Version: 4.0 NetAct name: SEG_SUCC_SDCCH_HO_BTW_BTS_TYPE
Description: Number of completed and successful SDCCH-SDCCH handovers between two different types of BTSs between two segments.
Counters 004058 and 004066 are updated along with this counter.
Updated: At the target BTS when the call has been successfully transferred to the target SDCCH.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004058: BSC I SDCCH
004066: BSC O SDCCH
Operability class:
Related to feature:
BSS10046: Multi BCF Control
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S10.5 Definition updated in release:
Counter ID: 004168 Network element name: INTER SEGMENT SUCCESS TCH HO BETWEEN BANDS
Version: 4.0 NetAct name: SEG_SUCCESS_TCH_HO_BTW_BAND
Description: Number of completed and successful TCH-TCH handovers between two BTSs on different frequency bands between two segments.
Counters 004056 and 004064 are updated along with this counter.
Updated: At the target BTS when the call has been successfully transferred to the target TCH.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
DN9813636 139
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.170 004169 / INTER SEGMENT SUCCESS TCH HO BETWEEN BTS TYPES
Dependencies with other counters:
004056: BSC I TCH TCH
004064: BSC O TCH TCH
Operability class:
Related to feature:
BSS10118: Common BCCH for GSM800/GSM1900
BSS10016: Common BCCH Control
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S10.5 Definition updated in release:
Counter ID: 004169 Network element name: INTER SEGMENT SUCCESS TCH HO BETWEEN BTS TYPES
Version: 4.0 NetAct name: SEG_SUCC_TCH_HO_BTW_BTS_TYPE
Description: Number of completed and successful TCH-TCH handovers between two different types of BTSs between two segments.
Counters 004056 and 004064 are updated along with this counter.
Updated: At the target BTS when the call has been successfully transferred to the target TCH.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004056: BSC I TCH TCH
004064: BSC O TCH TCH
Operability class:
Related to feature:
BSS10046: Multi BCF Control
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S10.5 Definition updated in release:
140 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.171 004170 / HO CAUSE DUE TO POOL SWITCHING
Counter ID: 004170 Network element name: HO CAUSE DUE TO POOL SWITCHING
Version: 4.0 NetAct name: HO_CAUSE_DUE_POOL_SWITCHING
Description: The counter records the occurrence of the root causes of the external handover before A interface pool switching. The counter records only the external handovers for which A interface pool switching is required.The causes of the original handover can be checked with a bit mask table.
DN9813636 141
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
Updated: When an external handover is requested and A interface pool switching is required. The bit in the counter (bit mask) is set according to the handover root cause. The related bit is set only once if a handover is requested with the same root cause several times during the measurement period. Counter bit mask: OK CI ratio 00000000000000000000000000000001Bad CI ratio 00000000000000000000000000000010Slow moving MS 00000000000000000000000000000100Speed detection slow moving MS 00000000000000000000000000001000Speed detection fast moving MS 00000000000000000000000000010000Enhanced rapid field drop 00000000000000000000000000100000Traffic reason handover 00000000000000000000000100000000GPRS territory upgrade 00000000000000000000001000000000HSCSD upgrade 00000000000000000000010000000000AMR HR 00000000000000000000100000000000AMR FR 00000000000000000001000000000000Interband 00000000000000000010000000000000Inter-BTS 00000000000000000100000000000000Interband due level 00000000000000001000000000000000Uplink quality 00000000000000010000000000000000High interference on uplink 00000000000000100000000000000000Uplink strength 00000000000001000000000000000000Downlink quality 00000000000010000000000000000000High interference on downlink 00000000000100000000000000000000Downlink strength 00000000001000000000000000000000Distance 00000000010000000000000000000000Forced handover 00000000100000000000000000000000Power budget handover 00000010000000000000000000000000Umbrella handover 00000100000000000000000000000000Directed retry 00001000000000000000000000000000Intelligent directed retry 00010000000000000000000000000000Rapid field drop 01000000000000000000000000000000Low distance 10000000000000000000000000000000
Example: Value 11000000000000011000000000000011(BIN) tells that the handover causes were: Low distance, Rapid field drop, Uplink quality, Interband due level, OK CI ratio and Bad CI ratio.
Counter 004099 is updated along with this counter.
Logical type: Variable Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004099: HO ATT DUE SWITCH CIRC POOL
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
142 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.172 004171 / AMR UNPACKING HO ATTEMPT DUE TO RX LEVEL
2.173 004172 / MSC I IURG TCH HO ATTEMPT
3GPP Measurement type:
Exceptions to related standard:
Used from release: S11.5 Definition updated in release:S12 (Name changed)
Counter ID: 004171 Network element name: AMR UNPACKING HO ATTEMPT DUE TO RX LEVEL
Version: 4.1 NetAct name: AMR_UNP_HO_ATT_DUE_TO_RX_LEV
Description: Number of AMR unpacking handover attempts due to DL or UL RX level.
Updated: When AMR unpacking handover is attempted due to DL or UL RX level being equal to or smaller than user given RX level threshold.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21483: Improved AMR packing and unpacking
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S10.5 Definition updated in release:S13, S15 Name changed
Counter ID: 004172 Network element name: MSC I IURG TCH HO ATTEMPT
Version: 4.1 NetAct name: MSC_I_IURG_TCH_HO_ATTEMPT
Description: Number of Iur-g enhanced relocation procedure related handover attempts
Updated: When enhanced relocation procedure related handover is attempted from 3G to 2G (BSC receives Handover Request including D-RNTI from MSC)
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
DN9813636 143
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.174 004173 / MSC I IURG TCH HO SUCCESS
2.175 004174 / MSC I HO FROM INTER PLMN INTRA GSM ATT
Related to feature:
BSS21528: ISHO acceleration via Iur-g
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S10.5 Definition updated in release:S15 (name changed)
Counter ID: 004173 Network element name: MSC I IURG TCH HO SUCCESS
Version: 4.1 NetAct name: MSC_I_IURG_TCH_HO_SUCCESS
Description: Number of successful Iur-g enhanced relocation procedure related han-dovers
Updated: When enhanced relocation procedure related handover is successfully completed (BSC sends Handover Complete to MSC)
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21528: ISHO acceleration via Iur-g
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S10.5 Definition updated in release:S15 (name changed)
Counter ID: 004174 Network element name: MSC I HO FROM INTER PLMN INTRA GSM ATT
Version: 4.0 NetAct name: MSC_I_HO_INT_PLMN_INT_GSM_ATT
Description: Number of the incoming inter-PLMN intra-GSM circuit switched handover attempts.
Updated: When the inter-PLMN HO attempt is started.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
144 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.176 004175 / MSC I HO FROM INTER PLMN INTRA GSM SUCC
2.177 004176 / MSC I HO FROM INTER PLMN INTRA GSM FAIL
Operability class:
Related to feature:
BSS11070: Support for Cell Global Identity
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S11 Definition updated in release:
Counter ID: 004175 Network element name: MSC I HO FROM INTER PLMN INTRA GSM SUCC
Version: 4.0 NetAct name: MSC_I_HO_INT_PLMN_INT_GSM_SUCC
Description: Number of the successful incoming inter-PLMN intra-GSM circuit switched handovers.
Updated: When the inter-PLMN HO is successfully completed.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS11070: Support for Cell Global Identity
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S11 Definition updated in release:
Counter ID: 004176 Network element name: MSC I HO FROM INTER PLMN INTRA GSM FAIL
Version: 4.0 NetAct name: MSC_I_HO_INT_PLMN_INT_GSM_FAIL
Description: Number of the failed incoming inter-PLMN intra-GSM circuit switched handovers.
Updated: When the inter-PLMN HO ends unsuccessfully.
Logical type: Sum Trigger type: Event Sampling interval:
DN9813636 145
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.178 004177 / MSC O HO FROM INTER PLMN INTRA GSM ATT
2.179 004178 / MSC O HO FROM INTER PLMN INTRA GSM SUCC
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS11070: Support for Cell Global Identity
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S11 Definition updated in release:
Counter ID: 004177 Network element name: MSC O HO FROM INTER PLMN INTRA GSM ATT
Version: 4.0 NetAct name: MSC_O_HO_INT_PLMN_INT_GSM_ATT
Description: Number of the outgoing inter-PLMN intra-GSM circuit switched handover attempts.
Updated: The HANDOVER_REQUIRED message is sent to the MSC. When the HO attempt is started.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS11070: Support for Cell Global Identity
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S11 Definition updated in release:
Counter ID: 004178 Network element name: MSC O HO FROM INTER PLMN INTRA GSM SUCC
Version: 4.0 NetAct name: MSC_O_HO_INT_PLMN_INT_GSM_SUCC
Description: Number of the successful outgoing inter-PLMN intra-GSM circuit switched handovers.
146 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.180 004179 / MSC O HO FROM INTER PLMN INTRA GSM FAIL
2.181 004180 / HO ATTEMPT DUE TO ISHO
Updated: When the HO is successfully completed.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS11070: Support for Cell Global Identity
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S11 Definition updated in release:
Counter ID: 004179 Network element name: MSC O HO FROM INTER PLMN INTRA GSM FAIL
Version: 4.0 NetAct name: MSC_O_HO_INT_PLMN_INT_GSM_FAIL
Description: Number of the failed outgoing inter-PLMN intra-GSM circuit switched handovers.
Updated: When the HO ends unsuccessfully.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS11070: Support for Cell Global Identity
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S11 Definition updated in release:
Counter ID: 004180 Network element name: HO ATTEMPT DUE TO ISHO
Version: 4.0 NetAct name: HO_ATTEMPT_DUE_TO_ISHO
DN9813636 147
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.182 004181 / HO ATTEMPT DUE TO INTER SYSTEM DIRECT ACCESS
Description: Number of attempts to perform a TCH-TCH handover from the GSM to the WCDMA RAN.
The success of the attempts can be seen on the BSC level in counter 051152 (EXT OUT ISHO) of the BSC Level Clear Code (PM) Measurement.
Updated: At the source BTS when a handover is started to the WCDMA RAN.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
051152: EXT OUT ISHO
Operability class:
Related to feature:
BSS11107: GSM-WCDMA Interworking Enhancements
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S11 Definition updated in release:
Counter ID: 004181 Network element name: HO ATTEMPT DUE TO INTER SYSTEM DIRECT ACCESS
Version: 4.0 NetAct name: HO_ATT_DUE_INTERSYS_DIRECT_ACC
Description: Number of attempts to perform an SDCCH-TCH handover from the GSM to the WCDMA RAN due to Direct Access.
The success of the attempts can be seen on the BSC level in counter 051154 (EXT OUT INTER SYSTEM DIRECT ACCESS) of the BSC Level Clear Code (PM) Mea-surement.
Updated: At the source BTS when a handover is started due to Direct Access to the WCDMA RAN.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
051154: EXT OUT INTER SYSTEM DIRECT ACCESS
Operability class:
Related to feature:
BSS11107: GSM-WCDMA Interworking Enhancements
Related to standard:
148 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.183 004182 / MSC O SDCCH TCH HO TO WCDMA RAN ATTEMPT
2.184 004183 / MSC O SDCCH TCH TO WCDMA RAN SUCCESS HO
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S11 Definition updated in release:
Counter ID: 004182 Network element name: MSC O SDCCH TCH HO TO WCDMA RAN ATTEMPT
Version: 4.0 NetAct name: MSCO_SDCCH_TCH_HO_WCDMARAN_ATT
Description: Number of attempts of outgoing SDCCH-TCH handovers from the GSM to the WCDMA RAN controlled by the MSC.
The success of the attempts can be seen in counter 004183 of the Handover Mea-surement.
Updated: At the source BTS when an SDCCH-TCH handover is started from the GSM to the WCDMA RAN.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004183: MSC O SDCCH TCH TO WCDMA RAN SUCCESS HO
Operability class:
Related to feature:
BSS11107: GSM-WCDMA Interworking Enhancements
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S11 Definition updated in release:
Counter ID: 004183 Network element name: MSC O SDCCH TCH TO WCDMA RAN SUCCESS HO
Version: 4.0 NetAct name: MSCO_SDCCH_TCH_HO_WCDMARAN_SUC
DN9813636 149
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.185 004184 / BSC I INTERNAL HO TO EXTERNAL
Description: Number of successful outgoing SDCCH-TCH handovers from the GSM to the WCDMA RAN controlled by the MSC.
The attempts can be seen in counter 004182 of the Handover Measurement.
Updated: At the source BTS when an SDCCH-TCH handover from the GSM to the WCDMA RAN is completed.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
004182: MSC O SDCCH TCH HO TO WCDMA RAN ATTEMPT
Operability class:
Related to feature:
BSS11107: GSM-WCDMA Interworking Enhancements
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S11 Definition updated in release:
Counter ID: 004184 Network element name: BSC I INTERNAL HO TO EXTERNAL
Version: 4.0 NetAct name: BSC_I_INT_HO_TO_EXT
Description: Number of incoming BSC-internal handovers that areaborted and changed to external.
Updated: When an incoming BSC-internal handover is aborted for changing it to external.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS20117: TCSM3i
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S11.5 Definition updated in release:S12 (Name changed)
150 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.186 004185 / BSC O INTERNAL HO TO EXTERNAL
2.187 004186 / MSC I INTERNAL HO TO EXTERNAL
Counter ID: 004185 Network element name: BSC O INTERNAL HO TO EXTERNAL
Version: 4.0 NetAct name: BSC_O_INT_HO_TO_EXT
Description: Number of outgoing BSC-internal handovers that areaborted and changed to external.
Updated: When an outgoing BSC-internal handover is aborted for changing it to exter-nal.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS20117: TCSM3i
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S11.5 Definition updated in release:S12 (Name changed)
Counter ID: 004186 Network element name: MSC I INTERNAL HO TO EXTERNAL
Version: 4.0 NetAct name: MSC_I_INT_HO_TO_EXT
Description: Number of incoming MSC-controlled handovers that were generated from internal handover.
Updated: When an incoming MSC-controlled handover is generated from an internal handover.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS20117: TCSM3i
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S11.5 Definition updated in release:S12 (Name changed)
DN9813636 151
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.188 004187 / MSC O INTERNAL HO TO EXTERNAL
2.189 004188 / INTERNAL INTRA CELL HO TO EXTERNAL
Counter ID: 004187 Network element name: MSC O INTERNAL HO TO EXTERNAL
Version: 4.0 NetAct name: MSC_O_INT_HO_TO_EXT
Description: Number of outgoing MSC-controlled handovers that were generated from internal handover.
Updated: When an outgoing MSC-controlled handover is generated from an internal handover.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS20117: TCSM3i
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S11.5 Definition updated in release:S12 (Name changed)
Counter ID: 004188 Network element name: INTERNAL INTRA CELL HO TO EXTERNAL
Version: 4.0 NetAct name: INTRA_CELL_HO_TO_EXT
Description: Number of internal intra-cell handovers that are aborted and changed to external.
Updated: When an internal intra-cell handover is aborted for changing it to external.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS20117: TCSM3i
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S11.5 Definition updated in release:S13 (Name changed)
152 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.190 004189 / MSC I UNSUCCESSFUL IURG HO DUE HO REQUEST DELAY
2.191 004190 / DTM MS HO ATTEMPTS TO DTM CELL
Counter ID: 004189 Network element name: MSC I UNSUCCESSFUL IURG HO DUE HO REQUEST DELAY
Version: 4.1 NetAct name: MSC_I_UNSUCC_IURG_HO_DUE_DLY
Description: Number of unsuccessful Iur-g enhanced relocation procedure related handover attempts due to delayed Handover Request
Updated: When enhanced relocation procedure related handover is attempted from 3G to 2G (BSC receives Handover Request including D-RNTI from MSC) but target TCH that has been allocated via Enhanced Relocation Resource Request has already been released
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21528: ISHO acceleration via Iur-g
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S11.5 Definition updated in release:S15 (name changed)
Counter ID: 004190 Network element name: DTM MS HO ATTEMPTS TO DTM CELL
Version: 4.0 NetAct name: DTM_MS_HO_ATT_TO_DTM_CELL
Description: Number of attempts where the handover for a DTM-capable MS in dedi-cated mode is started to the DTM-capable cell.
Updated: When resource for DTM-capable MS is requested from the DTM-capable cell.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS20088: Dual Transfer Mode (DTM)
Related to standard:
3GPP Measurement name (Clause header):
DN9813636 153
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.192 004191 / DTM MS HO SUCCEEDED TO DTM CELL
2.193 004192 / DTM MS HO ATTEMPTS TO NON DTM CELL
3GPP Measurement type:
Exceptions to related standard:
Used from release: S12 Definition updated in release:
Counter ID: 004191 Network element name: DTM MS HO SUCCEEDED TO DTM CELL
Version: 4.0 NetAct name: DTM_MS_HO_SUCC_TO_DTM_CELL
Description: Number of successful handovers where a DTM-capable MS in dedicated mode is handed over to the DTM-capable cell.
Updated: When a DTM-capable MS is handed over successfully to the DTM-capable cell.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS20088: Dual Transfer Mode (DTM)
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S12 Definition updated in release:
Counter ID: 004192 Network element name: DTM MS HO ATTEMPTS TO NON DTM CELL
Version: 4.0 NetAct name: DTM_MS_HO_ATT_TO_NON_DTM_CELL
Description: Number of attempts where the handover for a DTM-capable MS in dedi-cated mode is started to the NON-DTM-capable cell.
Updated: When resource for DTM-capable MS is requested from the NON-DTM-capable cell.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
154 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.194 004193 / DTM MS HO SUCCEEDED TO NON DTM CELL
2.195 004194 / DTM CALL HO FROM DTM CELL SUCCEEDED
Related to feature:
BSS20088: Dual Transfer Mode (DTM)
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S12 Definition updated in release:
Counter ID: 004193 Network element name: DTM MS HO SUCCEEDED TO NON DTM CELL
Version: 4.0 NetAct name: DTM_MS_HO_SUCC_TO_NON_DTM_CELL
Description: Number of successful handovers where a DTM-capable MS in dedicated mode is handed to the NON-DTM-capable cell.
Updated: When a DTM-capable MS is handed over successfully to the NON-DTM-capable cell.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS20088: Dual Transfer Mode (DTM)
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S12 Definition updated in release:
Counter ID: 004194 Network element name: DTM CALL HO FROM DTM CELL SUCCEEDED
Version: 4.0 NetAct name: DTM_CALL_HO_FROM_DTM_CELL
Description: Number of events where an MS that was having a DTM allocation in the source cell is successfully handed over to the cell.
DN9813636 155
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.196 004195 / DTM HO DUE LACK OF RESOURCES
Updated: When a DTM-capable MS is handed over successfully to the cell in a situ-ation where the MS was having a DTM allocation in the source cell. The counter is updated in the target cell after the BSC has sent the HANDOVER PERFORMED or HANDOVER COMPLETE message to the MSC.
See figures: - DTM call; internal inter-cell handover; CS connection power budget - DTM call; internal inter-cell handover; lack of resources in the PS territory
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS20088: Dual Transfer Mode (DTM)
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S12 Definition updated in release:
Counter ID: 004195 Network element name: DTM HO DUE LACK OF RESOURCES
Version: 4.0 NetAct name: DTM_HO_DUE_LACK_OF_RESOURCE
Description: Number of events where the BSC triggers an inter-cell handover proce-dure for a DTM-capable MS due to lack of resources in the source cell.
Updated: When an inter-cell handover procedure is triggered due to lack of suitable radio resources in PS territory, both in the initial DTM allocation and DTM call reallo-cation procedure cases.
The counter is also updated when the inter-cell handover procedure is triggered when the MT DTM call establishment fails or when the Quality Control triggers a cell change for a DTM-related TBF.
See figure:- DTM call; internal inter-cell handover; lack of resources in the PS territory
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS20088: Dual Transfer Mode (DTM)
Related to standard:
156 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.197 004196 / NON DTM BASED ISHO ATTEMPT
2.198 004197 / NON DTM BASED ISHO SUCCESS
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S12 Definition updated in release:
Counter ID: 004196 Network element name: NON DTM BASED ISHO ATTEMPT
Version: 4.0 NetAct name: NON_DTM_BASED_ISHO_ATTEMPT
Description: Number of events where an inter-system handover for a WCDMA-capable MS is attempted due to the terminal's inability to have simultaneous CS and PS connections in GSM.
Updated: When inter-system handover resources are requested for a WCDMA-capable MS due to the terminal's inability to have simultaneous CS and PS connec-tions in GSM.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS20088: Dual Transfer Mode (DTM)
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S12 Definition updated in release:
Counter ID: 004197 Network element name: NON DTM BASED ISHO SUCCESS
Version: 4.0 NetAct name: NON_DTM_BASED_ISHO_SUCCESS
Description: Number of events where an inter-system handover for a WCDMA-capable MS is performed due to the terminal's inability to have simultaneous CS and PS connections in GSM.
Updated: When an inter-system handover is made successfully for a WCDMA-capable MS due to the terminal's inability to have simultaneous CS and PS connec-tions in GSM.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
DN9813636 157
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.199 004198 / DTM CALL HO ATTEMPTS TO DTM CELL
2.200 004199 / DTM CALL HO SUCCESS TO DTM CELL
Dependencies with other counters:
Operability class:
Related to feature:
BSS20088: Dual Transfer Mode (DTM)
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S12 Definition updated in release:
Counter ID: 004198 Network element name: DTM CALL HO ATTEMPTS TO DTM CELL
Version: 4.0 NetAct name: DTM_CALL_HO_ATT_TO_DTM_CELL
Description: Number of attempts to hand an MS, which is having a DTM call in the source cell, over to the DTM-capable cell.
Updated: When resource for a DTM call is requested from the DTM-capable cell.
See figures: - DTM call; internal inter-cell handover; CS connection power budget- DTM call; internal inter-cell handover; lack of resources in the PS territory - DTM call; external handover, source BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS20088: Dual Transfer Mode (DTM)
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S12 Definition updated in release:
Counter ID: 004199 Network element name: DTM CALL HO SUCCESS TO DTM CELL
Version: 4.0 NetAct name: DTM_CALL_HO_SUCC_TO_DTM_CELL
158 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.201 004200 / DTM CALL HO ATTEMPTS TO NON DTM CELL
Description: Number of events where an MS, which was having a DTM call in the source cell, is successfully handed over to the DTM-capable cell.
Updated: When a DTM call is handed over successfully to the DTM-capable cell.
See figures: - DTM call; internal inter-cell handover; CS connection power budget- DTM call; internal inter-cell handover; lack of resources in the PS territory - DTM call; external handover, source BSC
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS20088: Dual Transfer Mode (DTM)
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S12 Definition updated in release:
Counter ID: 004200 Network element name: DTM CALL HO ATTEMPTS TO NON DTM CELL
Version: 4.0 NetAct name: DTM_CALL_HO_ATT_TO_NON_DTM
Description: Number of attempts to hand an MS, which is having a DTM call in the source cell, over to the NON-DTM-capable cell.
Updated: When resource for a DTM call is requested from the NON-DTM-capable cell.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS20088: Dual Transfer Mode (DTM)
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S12 Definition updated in release:
DN9813636 159
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.202 004201 / DTM CALL HO SUCCESS TO NON DTM CELL
2.203 004202 / BSC I INTERNAL HO TO EXTERNAL SUCCESS-FUL
Counter ID: 004201 Network element name: DTM CALL HO SUCCESS TO NON DTM CELL
Version: 4.0 NetAct name: DTM_CALL_HO_SUCC_TO_NON_DTM
Description: Number of events where an MS, which was having a DTM call in the source cell, is successfully handed over to the NON-DTM-capable cell.
Updated: When a DTM call is handed over successfully to the NON-DTM-capable cell. Note that the DTM-PS connection is released in the source cell and it cannot be re-established in the NON-DTM-capable target cell until the CS connection is released.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS20088: Dual Transfer Mode (DTM)
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S12 Definition updated in release:
Counter ID: 004202 Network element name: BSC I INTERNAL HO TO EXTERNAL SUCCESSFUL
Version: 4.0 NetAct name: BSC_I_INT_SUCC_HO_TO_EXT
Description: Number of successful incoming external handovers that originally were BSC-controlled internal inter-cell TCH-TCH handovers but were changed to MSC controlled due to pool switching or avoiding DL muting when speech coding was changed.
Updated: In the target cell when a TCH-TCH handover is completed and the HANDOVER COMPLETED message is sent to the MSC.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
160 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.204 004203 / BSC O INTERNAL HO TO EXTERNAL SUCCESS-FUL
2.205 004204 / INTRA CELL TCH HO TO EXTERNAL SUCCESS-FUL
Related to feature:
BSS20999: New Counters for Handover Measurement
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S12 Definition updated in release:
Counter ID: 004203 Network element name: BSC O INTERNAL HO TO EXTERNAL SUCCESSFUL
Version: 4.0 NetAct name: BSC_O_SUCC_HO_TO_EXT
Description: Number of successful outgoing external handovers that originally were BSC-controlled internal inter-cell TCH-TCH handovers but were changed to MSC controlled due to pool switching or avoiding DL muting when speech coding was changed.
Updated: In the source cell when a TCH-TCH handover is completed and the CLEAR COMMAND message is received from the MSC.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS20999: New Counters for Handover Measurement
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S12 Definition updated in release:
Counter ID: 004204 Network element name: INTRA CELL TCH HO TO EXTERNAL SUCCESSFUL
Version: 4.0 NetAct name: INT_SUCC_HO_TO_EXT
DN9813636 161
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.206 004205 / HO AMR FR TO HR SUCCESSFUL
Description: Number of successful incoming external handovers that originally were BSC-controlled internal intra-cell TCH-TCH handovers but were changed to MSC controlled due to pool switching or avoiding DL muting when speech coding was changed.
Updated: In the target cell when a TCH-TCH handover is completed and the HANDOVER COMPLETED message is sent to the MSC.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS20999: New Counters for Handover Measurement
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S12 Definition updated in release:
Counter ID: 004205 Network element name: HO AMR FR TO HR SUC-CESSFUL
Version: 4.0 NetAct name: HO_SUCC_AMR_FR_TO_HR
Description: Number of successful HOs from AMR FR to AMR HR.
Updated: When a channel rate change HO for an AMR FR call is successful and the HANDOVER PERFORMED message is sent to the MSC.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS20999: New Counters for Handover Measurement
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S12 Definition updated in release:
162 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.207 004206 / HO AMR HR TO FR SUCCESSFUL
2.208 004207 / MSC I UNSUCCESSFUL HO FROM WCDMA RAN DUE POOL SWITCHING
Counter ID: 004206 Network element name: HO AMR HR TO FR SUC-CESSFUL
Version: 4.0 NetAct name: HO_SUCC_AMR_HR_TO_FR
Description: Number of successful HOs from AMR HR to AMR FR.
Updated: When a channel rate change HO for an AMR HR call is successful and the HANDOVER PERFORMED message is sent to the MSC.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS20999: New Counters for Handover Measurement
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S12 Definition updated in release:
Counter ID: 004207 Network element name: MSC I UNSUCCESSFUL HO FROM WCDMA RAN DUE POOL SWITCHING
Version: 4.0 NetAct name: MSC_I_WCDMA_UNSUC_POOL_SWITCH
Description: Number of incoming UTRAN to GSM handovers that are unsuccessful due to a wrong A interface circuit type.
Updated: When the HO attempt ends as a result of a TCH allocation attempt which is unsuccessful because of a mismatch between the requested TCH channel type and the A interface circuit type in UTRAN to GSM handover. The cause switch_circuit_pool is sent in the HANDOVER FAILURE message to the A interface.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS20999: New Counters for Handover Measurement
Related to standard:
3GPP Measurement name (Clause header):
DN9813636 163
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.209 004208 / MSC I SUCCESSFUL HO FROM WCDMA RAN POOL SWITCHING
2.210 004209 / IURG HO REQUEST AFTER MS ON TARGET CHANNEL
3GPP Measurement type:
Exceptions to related standard:
Used from release: S12 Definition updated in release:
Counter ID: 004208 Network element name: MSC I SUCCESSFUL HO FROM WCDMA RAN POOL SWITCHING
Version: 4.0 NetAct name: MSC_I_WCDMA_SUCC_POOL_SWITCH
Description: Number of incoming UTRAN to GSM handovers that are successful after circuit pool switching.
Updated: In the target cell when the 3G to 2G handover is completed after circuit pool switching and the HANDOVER COMPLETED message is sent to the MSC.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS20999: New Counters for Handover Measurement
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S12 Definition updated in release:
Counter ID: 004209 Network element name: IURG HO REQUEST AFTER MS ON TARGET CHANNEL
Version: 4.1 NetAct name: IURG_HO_REQ_AFT_MS_ON_TGT_CH
Description: Number of Iur-g enhanced relocation procedure related handover attempts after mobile has moved to target channel
Updated: When enhanced relocation procedure related handover is attempted from 3G to 2G (Handover Request is received from MSC) after mobile has already moved to target channel (BSC has received Establish Indication from BTS)
Logical type: Sum Trigger type: Event Sampling interval:
164 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.211 004210 / SPARE004210
2.212 004211 / SPARE004211
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21528: ISHO acceleration via Iur-g
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S12 Definition updated in release:S15 (name changed)
Counter ID: 004210 Network element name: SPARE004210
Version: 4.0 NetAct name: SPARE004210
Description: Reserved for future use.
Updated:
Logical type: Trigger type: Sampling interval:
Unit: Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S12 Definition updated in release:
Counter ID: 004211 Network element name: SPARE004211
Version: 4.0 NetAct name: SPARE004211
Description: Reserved for future use.
Updated:
Logical type: Trigger type: Sampling interval:
Unit: Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
DN9813636 165
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.213 004212 / SPARE004212
2.214 004213 / SPARE004213
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S12 Definition updated in release:
Counter ID: 004212 Network element name: SPARE004212
Version: 4.0 NetAct name: SPARE004212
Description: Reserved for future use.
Updated:
Logical type: Trigger type: Sampling interval:
Unit: Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S12 Definition updated in release:
Counter ID: 004213 Network element name: SPARE004213
Version: 4.0 NetAct name: SPARE004213
Description: Reserved for future use.
Updated:
Logical type: Trigger type: Sampling interval:
Unit: Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S12 Definition updated in release:
166 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.215 004214 / SPARE004214
2.216 004215 / HO ATTEMPT FROM LRTCH TO NORMAL AREA
Counter ID: 004214 Network element name: SPARE004214
Version: 4.0 NetAct name: SPARE004214
Description: Reserved for future use.
Updated:
Logical type: Trigger type: Sampling interval:
Unit: Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S12 Definition updated in release:
Counter ID: 004215 Network element name: HO ATTEMPT FROM LRTCH TO NORMAL AREA
Version: 3.0 NetAct name: HO_ATT_FROM_LRTCH_TO_NORM
Description: Number of intra-cell handover attempts from the long reach TCH to a normal area.
Updated: When a BSC starts an intra-cell handover attempt from the long reach TCH to a normal area. The intra-cell handover attempt is started right after the incoming external handover to the long reach TCH has been completed (HANDOVER COMPLETE message is sent to the MSC).
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21274: Long Reach TSL (2G BTS)
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S13 Definition updated in release:
DN9813636 167
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.217 004216 / HO FROM LRTCH TO NORMAL AREA SUCCESS-FUL
2.218 004217 / HO ATTEMPT FROM LRTCH TO EXTENDED AREA
Counter ID: 004216 Network element name: HO FROM LRTCH TO NORMAL AREA SUCCESSFUL
Version: 3.0 NetAct name: SUCC_HO_FROM_LRTCH_TO_NORM
Description: Number of successful intra-cell handovers from the long reach TCH to a normal area.
Updated: When a handover from the long reach TCH to a normal area is successfully completed (HANDOVER PERFORMED message is sent to the MSC).
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21274: Long Reach TSL (2G BTS)
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S13 Definition updated in release:
Counter ID: 004217 Network element name: HO ATTEMPT FROM LRTCH TO EXTENDED AREA
Version: 3.0 NetAct name: HO_ATT_FROM_LRTCH_TO_EXT
Description: Number of intra-cell handover attempts from the long reach TCH to an extended area.
Updated: When the BSC starts handover attempts from the long reach TCH to an extended area. The intra-cell handover attempt is started right after the incoming external handover to the long reach TCH has been completed (HANDOVER COMPLETE message is sent to the MSC).
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21274: Long Reach TSL (2G BTS)
Related to standard:
168 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.219 004218 / HO FROM LRTCH TO EXTENDED AREA SUC-CESSFUL
2.220 004219 / HO ATTEMPT DUE TO IBHO TO GSM
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S13 Definition updated in release:
Counter ID: 004218 Network element name: HO FROM LRTCH TO EXTENDED AREA SUCCESSFUL
Version: 3.0 NetAct name: SUCC_HO_FROM_LRTCH_TO_EXT
Description: Number of successful intra-cell handovers from the long reach TCH to an extended area.
Updated: When a handover from the long reach TCH to an extended area is success-fully completed (HANDOVER PERFORMED message is sent to the MSC).
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21274: Long Reach TSL (2G BTS)
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S13 Definition updated in release:
Counter ID: 004219 Network element name: HO ATTEMPT DUE TO IBHO TO GSM
Version: 3.0 NetAct name: HO_ATT_DUE_TO_IBHO_TO_GSM
Description: Number of IMSI-based HO attempts started due to the cause ibho_to_gsm to a GSM cell.
Updated: When an IMSI-based handover is started to a GSM cell.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
DN9813636 169
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.221 004220 / HO ATTEMPT DUE TO IBHO TO UTRAN
2.222 004221 / HO ATTEMPT DUE TO INT HO TO EXT
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S13 Definition updated in release:
Counter ID: 004220 Network element name: HO ATTEMPT DUE TO IBHO TO UTRAN
Version: 3.0 NetAct name: HO_ATT_DUE_TO_IBHO_TO_UTRAN
Description: Number of IMSI-based HO attempts started due to the cause ibho_to_utran to a UTRAN cell.
Updated: When an IMSI-based handover is started to a UTRAN cell.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S13 Definition updated in release:
Counter ID: 004221 Network element name: HO ATTEMPT DUE TO INT HO TO EXT
Version: 3.0 NetAct name: HO_ATT_DUE_TO_INT_HO_TO_EXT
Description: Number of HO attempts started due to the cause int_ho_to_ext.
Updated: When an internal handover is changed to an external.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
170 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.223 004222 / HO ATTEMPT DUE TO DTM MO CS TO PS
2.224 004223 / HO ATTEMPT DUE TO DTM MT CS TO PS
Exceptions to related standard:
Used from release: S13 Definition updated in release:
Counter ID: 004222 Network element name: HO ATTEMPT DUE TO DTM MO CS TO PS
Version: 3.0 NetAct name: HO_ATT_DUE_TO_DTM_MO_CS_TO_PS
Description: Number of HO attempts started due to the cause dtm_mo_cs_to_ps.
Updated: When an internal intra-cell handover from the CS territory to the PS territory is started as part of a mobile-originated DTM call establishment.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S13 Definition updated in release:
Counter ID: 004223 Network element name: HO ATTEMPT DUE TO DTM MT CS TO PS
Version: 3.0 NetAct name: HO_ATT_DUE_TO_DTM_MT_CS_TO_PS
Description: Number of HO attempts started due to the cause dtm_mt_cs_to_ps.
Updated: When an internal intra-cell handover from the CS territory to the PS territory is started as part of a mobile-terminated DTM call establishment.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
DN9813636 171
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.225 004224 / HO ATTEMPT DUE TO DTM MT PS TO PS
2.226 004225 / HO ATTEMPT DUE TO DTM PS TO CS
Exceptions to related standard:
Used from release: S13 Definition updated in release:
Counter ID: 004224 Network element name: HO ATTEMPT DUE TO DTM MT PS TO PS
Version: 3.0 NetAct name: HO_ATT_DUE_TO_DTM_MT_PS_TO_PS
Description: Number of HO attempts started due to the cause dtm_mt_ps_to_ps.
Updated: When an internal intra-cell handover inside a PS territory is started as part of a PS quality control-initiated DTM call reallocation.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S13 Definition updated in release:
Counter ID: 004225 Network element name: HO ATTEMPT DUE TO DTM PS TO CS
Version: 3.0 NetAct name: HO_ATT_DUE_TO_DTM_PS_TO_CS
Description: Number of HO attempts started due to the cause dtm_ps_to_cs.
Updated: When an internal intra-cell handover from a PS territory to CS territory is started as part of a DTM call release.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
172 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.227 004226 / HO ATTEMPT DUE TO DTM DISABLED
2.228 004227 / HO ATTEMPT DUE TO PCU QUAL CONTROL
Used from release: S13 Definition updated in release:
Counter ID: 004226 Network element name: HO ATTEMPT DUE TO DTM DISABLED
Version: 3.0 NetAct name: HO_ATT_DUE_TO_DTM_DISABLED
Description: Number of HO attempts started due to the cause dtm_disabled.
Updated: When an internal inter-cell handover is started to a CS territory when DTM is deactivated in a segment.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S13 Definition updated in release:
Counter ID: 004227 Network element name: HO ATTEMPT DUE TO PCU QUAL CONTROL
Version: 3.0 NetAct name: HO_ATT_DUE_PCU_QUAL_CONTROL
Description: Number of HO attempts started due to the cause pcu_qual_cntrl.
Updated: When an internal inter-cell handover is started due to quality reasons related to the DTM PS connection.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S13 Definition updated in release:
DN9813636 173
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.229 004228 / HO ATTEMPT DUE TO DTM NO PS RES AVAIL
2.230 004229 / HO ATTEMPT FROM EXTENDED TO SUPER EXTENDED AREA
Counter ID: 004228 Network element name: HO ATTEMPT DUE TO DTM NO PS RES AVAIL
Version: 3.0 NetAct name: HO_ATT_DUE_DTM_NO_PS_RES_AV
Description: Number of HO attempts started due to the non-available PS resources for DTM.
Updated: When an internal inter-cell handover is started due to non-available PS resources for DTM.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S13 Definition updated in release:
Counter ID: 004229 Network element name: HO ATTEMPT FROM EXTENDED TO SUPER EXTENDED AREA
Version: 3.1 NetAct name: HO_ATT_FROM_EXT_TO_SUPER
Description: Number of intra-cell handover attempts from the extended area to the super-extended area.
Updated: When an intra-cell handover from the extended area to the super-extended area is started.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21277: 105km Extended Cell CS
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S14 Definition updated in release:S14
174 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.231 004230 / HO FROM EXTENDED TO SUPER EXTENDED AREA SUCCESSFUL
2.232 004231 / HO ATTEMPT FROM SUPER EXTENDED TO EXTENDED AREA
Counter ID: 004230 Network element name: HO FROM EXTENDED TO SUPER EXTENDED AREA SUCCESSFUL
Version: 3.1 NetAct name: HO_SUCC_FROM_EXT_TO_SUPER
Description: Number of successful intra-cell handovers from the extended area to the super-extended area.
Updated: When an intra-cell handover attempt from the extended area to the super-extended area is successfully completed.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21277: 105km Extended Cell CS
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S14 Definition updated in release:S14
Counter ID: 004231 Network element name: HO ATTEMPT FROM SUPER EXTENDED TO EXTENDED AREA
Version: 3.1 NetAct name: HO_ATT_FROM_SUPER_TO_EXT
Description: Number of intra-cell handover attempts from the super-extended area to the extended area.
Updated: When an intra-cell handover from the super-extended area to the extended area is started.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21277: 105km Extended Cell CS
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
DN9813636 175
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.233 004232 / HO FROM SUPER EXTENDED TO EXTENDED AREA SUCCESSFUL
2.234 004233 / HO ATTEMPT FROM LRTCH TO SUPER EXTENDED AREA
Exceptions to related standard:
Used from release: S14 Definition updated in release:S14
Counter ID: 004232 Network element name: HO FROM SUPER EXTENDED TO EXTENDED AREA SUCCESSFUL
Version: 3.1 NetAct name: HO_SUCC_FROM_SUPER_TO_EXT
Description: Number of successful intra-cell handovers from the super-extended area to the extended area.
Updated: When an intra-cell handover attempt from the super-extended area to the extended area is successfully completed.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21277: 105km Extended Cell CS
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S14 Definition updated in release:S14
Counter ID: 004233 Network element name: HO ATTEMPT FROM LRTCH TO SUPER EXTENDED AREA
Version: 3.1 NetAct name: HO_ATT_FROM_LRTCH_TO_SUPER
Description: Number of intra-cell handover attempts from Long Reach TCH to the super-extended area.
Updated: When an intra-cell handover from Long Reach TCH to the super-extended area is started.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
176 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.235 004234 / HO FROM LRTCH TO SUPER EXTENDED AREA SUCCESSFUL
2.236 004235 / HO ATTEMPT FROM AMR HR TO DHR
Related to feature:
BSS21277: 105km Extended Cell CS
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S14 Definition updated in release:S14
Counter ID: 004234 Network element name: HO FROM LRTCH TO SUPER EXTENDED AREA SUCCESSFUL
Version: 3.1 NetAct name: HO_SUCC_FROM_LRTCH_TO_SUPER
Description: Number of successful intra-cell handovers from Long Reach TCH to the super-extended area.
Updated: When an intra-cell handover attempt from Long Reach TCH to the super-extended area is successfully completed.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21277: 105km Extended Cell CS
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S14 Definition updated in release:S14
Counter ID: 004235 Network element name: HO ATTEMPT FROM AMR HR TO DHR
Version: 1.0 NetAct name: HO_ATTEMPT_FROM_AMR_HR_TO_DHR
Description: Number of HO attempts from an AMR HR TCH to a double half rate TCH.
Updated: When a double half rate multiplexing HO attempt for an AMR HR call is started.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
DN9813636 177
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.237 004236 / HO ATTEMPT FROM AMR FR TO DHR
2.238 004237 / HO FROM AMR HR TO DHR SUCCESSFUL
Dependencies with other counters:
Operability class:
Related to feature:
BSS21309: OSC Half Rate with SAIC MS
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S15 Definition updated in release:
Counter ID: 004236 Network element name: HO ATTEMPT FROM AMR FR TO DHR
Version: 1.0 NetAct name: HO_ATTEMPT_FROM_AMR_FR_TO_DHR
Description: Number of HO attempts from an AMR FR TCH to a double half rate TCH.
Updated: When a double half rate multiplexing HO attempt for an AMR FR call is started.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21309: OSC Half Rate with SAIC MS
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S15 Definition updated in release:
Counter ID: 004237 Network element name: HO FROM AMR HR TO DHR SUCCESSFUL
Version: 1.0 NetAct name: HO_FROM_AMR_HR_TO_DHR_SUCC
Description: Number of successful HOs from an AMR HR TCH to a double half rate TCH.
Updated: When a HO from an AMR HR TCH to a double half rate TCH has been com-pleted.
178 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.239 004238 / HO FROM AMR FR TO DHR SUCCESSFUL
2.240 004239 / INT CELL UNSUCCESS HO TO DHR DUE TO CSDAP MISMATCH
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21309: OSC Half Rate with SAIC MS
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S15 Definition updated in release:
Counter ID: 004238 Network element name: HO FROM AMR FR TO DHR SUCCESSFUL
Version: 1.0 NetAct name: HO_FROM_AMR_FR_TO_DHR_SUCC
Description: Number of successful HOs from an AMR HR TCH to a double half rate TCH.
Updated: When a HO from an AMR FR to a double half rate TCH has been com-pleted.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21309: OSC Half Rate with SAIC MS
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S15 Definition updated in release:
Counter ID: 004239 Network element name: INT CELL UNSUCCESS HO TO DHR DUE TO CSDAP MISMATCH
Version: 1.0 NetAct name: UNSUCC_HO_TO_DHR_DUE_MISMATCH
DN9813636 179
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.241 004240 / HO ATTEMPT FROM DHR DUE TO RX QUALITY
Description: Number of failed HOs to a double half rate TCH due to CSDAP conflict between BSC and BTS.
Updated: When target channel activation fails during a double half rate multiplexing HO with cause code CSDAP error.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21309: OSC Half Rate with SAIC MS
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S15 Definition updated in release:
Counter ID: 004240 Network element name: HO ATTEMPT FROM DHR DUE TO RX QUALITY
Version: 1.0 NetAct name: HO_ATT_FROM_DHR_DUE_RX_QUAL
Description: Number of demultiplexing HO attempts starting from a double half rate TCH based on Rx quality.
Updated: When demultiplexing HO attempt for a double half rate call is started based on Rx quality.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21309: OSC Half Rate with SAIC MS
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S15 Definition updated in release:
180 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.242 004241 / HO ATTEMPT FROM DHR DUE TO UL RX LEVEL DIFFERENCE
2.243 004242 / HO FROM DHR DUE TO RX QUALITY SUCCESS-FUL
Counter ID: 004241 Network element name: HO ATTEMPT FROM DHR DUE TO UL RX LEVEL DIFFERENCE
Version: 1.0 NetAct name: HO_ATT_FROM_DHR_DUE_RXLEV_DIF
Description: Number of demultiplexing HO attempts starting from a double half rate TCH based on UL Rx level difference between the multiplexed double half rate TCHs.
Updated: When a demultiplexing HO attempt for a double half rate call is started based on UL Rx level difference between the multiplexed double half rate TCHs.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21309: OSC Half Rate with SAIC MS
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S15 Definition updated in release:
Counter ID: 004242 Network element name: HO FROM DHR DUE TO RX QUALITY SUCCESSFUL
Version: 1.0 NetAct name: HO_FROM_DHR_DUE_RX_QUAL_SUCC
Description: Number of successful HOs starting from double half rate TCH based on Rx quality.
Updated: When a demultiplexing HO starting from a double half rate TCH based on Rx quality has been completed.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21309: OSC Half Rate with SAIC MS
Related to standard:
DN9813636 181
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.244 004243 / HO FROM DHR DUE TO UL RX LEVEL DIFFER-ENCE SUCCESSFUL
2.245 004244 / BSS INTERNAL HANDOVER REQUIRED REQUESTS
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S15 Definition updated in release:
Counter ID: 004243 Network element name: HO FROM DHR DUE TO UL RX LEVEL DIFFERENCE SUCCESSFUL
Version: 1.0 NetAct name: HO_FROM_DHR_DUE_RXLEV_SUCC
Description: Number of successful demultiplexing HOs starting from a double half rate TCH based on UL Rx level difference between the multiplexed double half rate TCHs.
Updated: When a demultiplexing HO from a double half rate TCH based on UL Rx level difference between the multiplexed double half rate TCHs has been completed.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21309: OSC Half Rate with SAIC MS
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S15 Definition updated in release:
Counter ID: 004244 Network element name: BSS INTERNAL HANDOVER REQUIRED REQUESTS
Version: 1.1 NetAct name: BSS_INT_HO_REQ_REQUESTS
Description: Number of BSS Internal Handover Required requests when IP based user plane is supported in the A interface
Updated: This is updated for the source cell when BSSMAP Internal Handover Required message is sent to MSS from BSC.See figures:- BSS Internal Handover with MSC Support - Local Handover- BSS Internal Handover with MSC Support - Distant Handover
182 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.246 004245 / BSS INTERNAL HANDOVER COMMANDS
2.247 004246 / BSS INTERNAL HANDOVER SOURCE SUCCESS-FUL
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21341: A over IP
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S15 Definition updated in release:
Counter ID: 004245 Network element name: BSS INTERNAL HANDOVER COMMANDS
Version: 1.1 NetAct name: BSS_INT_HO_COMMANDS
Description: Number of BSS Internal Handover Commands received from the MSC when IP based user plane is supported in the A interface
Updated: This is updated for the target cell when BSSMAP Internal Handover Command message is received on BSC from MSS.See figures:- BSS Internal Handover with MSC Support - Local Handover- BSS Internal Handover with MSC Support - Distant Handover
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21341: A over IP
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S15 Definition updated in release:
Counter ID: 004246 Network element name: BSS INTERNAL HANDOVER SOURCE SUCCESSFUL
DN9813636 183
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.248 004247 / BSS INTERNAL HANDOVER REQUIRED REJEC-TIONS
Version: 1.1 NetAct name: BSS_INT_HO_SRC_SUCC
Description: Number of successful BSS Internal Handover procedures of source cell when IP based user plane is supported in the A interface.
Updated: This is updated for the source cell when Internal Handover procedure with MSS support is complete (HANDOVER COMPLETE sent to MSS) and source TCH is released successfully (RF CHANNEL RELEASE ACK received from BTS).
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21341: A over IP
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S15 Definition updated in release:
Counter ID: 004247 Network element name: BSS INTERNAL HANDOVER REQUIRED REJECTIONS
Version: 1.1 NetAct name: BSS_INT_HO_REQ_REJECTIONS
Description: Number of BSS Internal Handover Required Rejections received from the MSC when IP based user plane is supported in the A interface
Updated: This is updated when Internal Handover Required Reject is sent from MSS to BSC. Counter is updated for the source cell.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21341: A over IP
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S15 Definition updated in release:
184 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.249 004248 / BSS INTERNAL HANDOVER SUCCESSFUL
2.250 004249 / BSS INTERNAL HANDOVER ENQUIRY
Counter ID: 004248 Network element name: BSS INTERNAL HANDOVER SUCCESSFUL
Version: 1.1 NetAct name: BSS_INT_HO_SUCCESSFUL
Description: Number of successful BSS Internal handover procedures when IP based user plane is supported in the A interface. (Count of Handover Complete messages related to the internal handover execution procedure)
Updated: This is updated for the target cell when BSC sends BSSMAP Handover Complete message to MSS. See figures:- BSS Internal Handover with MSC Support - Local Handover- BSS Internal Handover with MSC Support - Distant Handover
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21341: A over IP
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S15 Definition updated in release:
Counter ID: 004249 Network element name: BSS INTERNAL HANDOVER ENQUIRY
Version: 1.1 NetAct name: BSS_INT_HO_ENQUIRY
Description: Number of BSS Internal Handover Enquiry messages received from the MSC when IP based user plane is supported in the A interface
Updated: This is updated when BSC receives BSSMAP Internal Handover Enquiry message from MSS. Counter is updated for the source cell.See figures:- BSS Internal Handover with MSC Support - Distant Handover
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
DN9813636 185
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.251 004250 / BSS INTERNAL HANDOVER ENQUIRY REJEC-TIONS
2.252 004251 / HO ATTEMPT FROM DHR DUE TO RX LEVEL
Related to feature:
BSS21341: A over IP
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S15 Definition updated in release:
Counter ID: 004250 Network element name: BSS INTERNAL HANDOVER ENQUIRY REJECTIONS
Version: 1.1 NetAct name: BSS_INT_HO_ENQUIRY_REJ
Description: Number of BSS Internal Handover Enquiry rejections when IP based user plane is supported in the A interface (Count of Handover Failure messages related to the Internal Handover Enquiry)
Updated: This is updated when BSC sends BSSMAP Handover Failure with cause set as "Internal Handover Enquiry Reject" to MSS. Counter is updated for the souce cell.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21341: A over IP
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S15 Definition updated in release:
Counter ID: 004251 Network element name: HO ATTEMPT FROM DHR DUE TO RX LEVEL
Version: 1.0 NetAct name: HO_ATT_FROM_DHR_DUE_RX_LEV
Description: Number of demultiplexing handover attempts starting from a double half rate TCH based on Rx level.
Updated: When demultiplexing handover attempt for a double half rate call is started based on Rx level of the call.
186 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.253 004252 / HO FROM DHR DUE TO RX LEVEL SUCCESSFUL
2.254 004253 / SPARE004253
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21309: OSC Half Rate with SAIC MS
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S15 Definition updated in release:
Counter ID: 004252 Network element name: HO FROM DHR DUE TO RX LEVEL SUCCESSFUL
Version: 1.0 NetAct name: HO_FROM_DHR_DUE_RX_LEV_SUCC
Description: Number of successful handovers starting from double half rate TCH based on Rx level.
Updated: When a demultiplexing handover starting from a double half rate TCH based on Rx level of the call has been completed.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21309: OSC Half Rate with SAIC MS
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S15 Definition updated in release:
Counter ID: 004253 Network element name: SPARE004253
Version: 1.0 NetAct name: SPARE004253
Description: Reserved for future use.
Updated:
Logical type: Trigger type: Sampling interval:
DN9813636 187
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.255 004254 / SPARE004254
2.256 004255 / SPARE004255
Unit: Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S15 Definition updated in release:
Counter ID: 004254 Network element name: SPARE004254
Version: 1.0 NetAct name: SPARE004254
Description: Reserved for future use.
Updated:
Logical type: Trigger type: Sampling interval:
Unit: Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S15 Definition updated in release:
Counter ID: 004255 Network element name: SPARE004255
Version: 1.0 NetAct name: SPARE004255
Description: Reserved for future use.
Updated:
Logical type: Trigger type: Sampling interval:
Unit: Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
188 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.257 004256 / SPARE004256
2.258 004257 / SPARE004257
3GPP Measurement type:
Exceptions to related standard:
Used from release: S15 Definition updated in release:
Counter ID: 004256 Network element name: SPARE004256
Version: 1.0 NetAct name: SPARE004256
Description: Reserved for future use.
Updated:
Logical type: Trigger type: Sampling interval:
Unit: Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S15 Definition updated in release:
Counter ID: 004257 Network element name: SPARE004257
Version: 1.0 NetAct name: SPARE004257
Description: Reserved for future use.
Updated:
Logical type: Trigger type: Sampling interval:
Unit: Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S15 Definition updated in release:
DN9813636 189
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.259 004258 / SPARE004258
2.260 004259 / HO ATTEMPT FROM AMR FR TO DFR IN 8K TRAU MODE
Counter ID: 004258 Network element name: SPARE004258
Version: 1.0 NetAct name: SPARE004258
Description: Reserved for future use.
Updated:
Logical type: Trigger type: Sampling interval:
Unit: Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature: Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S15 Definition updated in release:
Counter ID: 004259 Network element name: HO ATTEMPT FROM AMR FR TO DFR IN 8K TRAU MODE
Version: 1.0 NetAct name: HO_ATT_AMR_FR_DFR_IN_8K_TRAU
Description: Number of handover attempts from an AMR FR TCH to a double full rate TCH in 8kbit/s TRAU mode.
Updated: When a double full rate multiplexing handover attempt to 8kbit/s TRAU mode for an AMR FR call is started. General counter HO ATTEMPT FROM AMR FR TO DFR is updated at the same time with this counter.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21325: 8K TRAU FOR OSC AMR FR
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S15 Definition updated in release:
190 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.261 004260 / HO FROM AMR FR TO DFR IN 8K TRAU MODE SUCCESSFUL
2.262 004261 / HO ATTEMPT FROM AMR FR TO DFR
Counter ID: 004260 Network element name: HO FROM AMR FR TO DFR IN 8K TRAU MODE SUCCESSFUL
Version: 1.0 NetAct name: HO_SUCC_AMR_FR_DFR_IN_8K_TRAU
Description: Number of successful handovers from an AMR FR TCH to a double full rate TCH in 8kbit/s TRAU mode.
Updated: When a handover from an AMR FR TCH to a double full rate TCH in 8kbit/s TRAU mode has been completed. General counter HO FROM AMR FR TO DFR SUCCESSFUL is updated at the same time with this counter.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21325: 8K TRAU FOR OSC AMR FR
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S15 Definition updated in release:
Counter ID: 004261 Network element name: HO ATTEMPT FROM AMR FR TO DFR
Version: 1.0 NetAct name: HO_ATTEMPT_FROM_AMR_FR_TO_DFR
Description: Number of handover attempts from an AMR FR TCH to a double full rate TCH.
Updated: When a double full rate multiplexing handover attempt for an AMR FR call is started.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21534: OSC Full Rate with SAIC MS
Related to standard:
3GPP Measurement name (Clause header):
DN9813636 191
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.263 004262 / HO FROM AMR FR TO DFR SUCCESSFUL
2.264 004263 / INT CELL UNSUCCESS HO TO DFR DUE TO CSDAP MISMATCH
3GPP Measurement type:
Exceptions to related standard:
Used from release: S15 Definition updated in release:
Counter ID: 004262 Network element name: HO FROM AMR FR TO DFR SUCCESSFUL
Version: 1.0 NetAct name: HO_FROM_AMR_FR_TO_DFR_SUCC
Description: Number of successful handovers from an AMR FR TCH to a double full rate TCH.
Updated: When a handover from an AMR FR TCH to a double full rate TCH has been completed.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21534: OSC Full Rate with SAIC MS
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S15 Definition updated in release:
Counter ID: 004263 Network element name: INT CELL UNSUCCESS HO TO DFR DUE TO CSDAP MISMATCH
Version: 1.0 NetAct name: UNSUCC_HO_TO_DFR_DUE_MISMATCH
Description: Number of failed handovers to a double full rate TCH due to CSDAP conflict between BSC and BTS.
Updated: When target channel activation fails during a double full rate multiplexing handover with cause code CSDAP error.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
192 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.265 004264 / HO ATTEMPT FROM DFR DUE TO RX QUALITY
2.266 004265 / HO ATTEMPT FROM DFR DUE TO UL RX LEVEL DIFFERENCE
Related to feature:
BSS21534: OSC Full Rate with SAIC MS
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S15 Definition updated in release:
Counter ID: 004264 Network element name: HO ATTEMPT FROM DFR DUE TO RX QUALITY
Version: 1.1 NetAct name: HO_ATT_FROM_DFR_RX_QUAL
Description: Number of demultiplexing handover attempts starting from a double full rate TCH based on Rx quality.
Updated: When demultiplexing handover attempt for a double full rate call is started based on Rx quality.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21534: OSC Full Rate with SAIC MS
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S15 Definition updated in release:
Counter ID: 004265 Network element name: HO ATTEMPT FROM DFR DUE TO UL RX LEVEL DIFFERENCE
Version: 1.0 NetAct name: HO_ATT_FROM_DFR_RXLVL_DIFF
Description: Number of demultiplexing handover attempts starting from a double full rate TCH based on UL Rx level difference between the multiplexed double full rate TCHs.
Updated: When a demultiplexing handover attempt for a double full rate call is started based on UL Rx level difference between the multiplexed double full rate TCHs.
Logical type: Sum Trigger type: Event Sampling interval:
DN9813636 193
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.267 004266 / HO ATTEMPT FROM DFR DUE TO RX LEVEL
2.268 004267 / HO FROM DFR DUE TO RX QUALITY SUCCESS-FUL
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21534: OSC Full Rate with SAIC MS
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S15 Definition updated in release:
Counter ID: 004266 Network element name: HO ATTEMPT FROM DFR DUE TO RX LEVEL
Version: 1.0 NetAct name: HO_ATT_FROM_DFR_RXLEVEL
Description: Number of demultiplexing handover attempts starting from a double full rate TCH based on Rx level.
Updated: When demultiplexing handover attempt for a double full rate call is started based on Rx level of the call.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21534: OSC Full Rate with SAIC MS
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S15 Definition updated in release:
Counter ID: 004267 Network element name: HO FROM DFR DUE TO RX QUALITY SUCCESSFUL
Version: 1.0 NetAct name: HO_FROM_DFR_DUE_RXQUAL_SUCC
Description: Number of successful handovers starting from double full rate TCH based on Rx quality.
194 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
2.269 004268 / HO FROM DFR DUE TO UL RX LEVEL DIFFER-ENCE SUCCESSFUL
Updated: When a demultiplexing handover starting from a double full rate TCH based on Rx quality has been completed.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21534: OSC Full Rate with SAIC MS
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S15 Definition updated in release:
Counter ID: 004268 Network element name: HO FROM DFR DUE TO UL RX LEVEL DIFFERENCE SUCCESSFUL
Version: 1.0 NetAct name: HO_FROM_DFR_DUE_RXLEV_DIF_SUC
Description: Number of successful demultiplexing handovers starting from a double full rate TCH based on UL Rx level difference between the multiplexed double full rate TCHs.
Updated: When a demultiplexing handover from a double full rate TCH based on UL Rx level difference between the multiplexed double full rate TCHs has been com-pleted.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21534: OSC Full Rate with SAIC MS
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S15 Definition updated in release:
DN9813636 195
4 Handover Measurement Counters of Handover Measurement
Id:0900d805808cc56aConfidential
2.270 004269 / HO FROM DFR DUE TO RX LEVEL SUCCESSFUL
2.271 004270 / HO ATTEMPT DUE TO POWER BALANCING
Counter ID: 004269 Network element name: HO FROM DFR DUE TO RX LEVEL SUCCESSFUL
Version: 1.0 NetAct name: HO_FROM_DFR_DUE_RXLEV_SUCC
Description: Number of successful handovers starting from double full rate TCH based on Rx level.
Updated: When a demultiplexing handover starting from a double full rate TCH based on Rx level of the call has been completed.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21534: OSC Full Rate with SAIC MS
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
Used from release: S15 Definition updated in release:
Counter ID: 004270 Network element name: HO ATTEMPT DUE TO POWER BALANCING
Version: 1.0 NetAct name: HO_ATT_DUE_TO_POWER_BALANCING
Description: Number of intra cell handover attempts that are made to balance TX power in BTS.
Updated: When a handover is started with the request of the radio resource manager in order to balance TX power in BTS.
Logical type: Sum Trigger type: Event Sampling interval:
Unit: Integer number Range: Example values:
Dependencies with other counters:
Operability class:
Related to feature:
BSS21507: Flexible MCPA TX Power Pooling
Related to standard:
3GPP Measurement name (Clause header):
3GPP Measurement type:
Exceptions to related standard:
196 DN9813636
4 Handover Measurement
Id:0900d805808cc56aConfidential
Counters of Handover Measurement
Used from release: S15 Definition updated in release:
DN9813636 197
4 Handover Measurement Signalling charts of Handover Measurement
Id:0900d805808d0166Confidential
3 Signalling charts of Handover MeasurementThe following figures show the signalling charts of Handover Measurement:
Figure 1 Successful internal intra-cell TCH to TCH handover
Counter 4109 or 4110 is updated only in case of a handover attempt due to a bad Rxlevel on a super-reuse frequency or a good Rxlevel on a regular frequency.
BTS: MSC:MS: BSC:
Cause downlink qualityCause distanceCause high int on uplinkCause high int on downlinkCause ho started by omcCause preemptionCause low distanceCause bad ci ratioCause good ci ratioHo att due bad rxlev on superHo att due good rxlev on reg
Int cell success ho
Cell tch tch
Cell tch tch attempt
Meas report Meas result
Physical context request
Physical context confirm
Channel activation
Channel activation ack
Assignment command
Assignment command
Sabm Establish indication
Ua
Rr
HO performed
Rf channel release
Rf channel release ack
Assignment complete
Assignment complete
Ho att due to GPRS
HO measurement,
4025 or4027 or4029 or4030 or4033 or4086 or4088 or4089 or4090 or4109 or4110 or
4076
4130
New channel reservation and activation
Signalling on old channel
Signalling on new channel
Old channel release
4018
4073
HO decision --> intra-cell HO attempt, old channel
198 DN9813636
4 Handover Measurement
Id:0900d805808d0166Confidential
Signalling charts of Handover Measurement
Figure 2 Successful internal inter-cell TCH to TCH handover
Counters 4067, 4071, 4014, 4064, 4070 and cause counters are updated in the source cell. Counters 4059, 4063, 4010, 4056 and 4062 are updated in the target cell. If the handover is made from normal to extended area, instead of counter 4027, counter 4103 is updated. If the handover is made from extended to normal area, instead of counter 4088, counter 4104 is updated. Counters 4063, 4071, 4070 and 4062 are updated only if the target cell is non-optimum.
BTS_1:MS: MSC:BTS_2: BSC:
HO performed
Rf channel release
Meas report Meas result
HO commandHO command
Channel activation
HO detectionPhysical info
HO access
Establish indication
Ua
HO complete HO complete
Rr
Sabm
HO measurements, old channel in the old BTS
Cause uplink qualityCause uplink levelCause downlink qualityCause downlink levelCause distanceCause resp to msc invocatCause high int on uplinkCause high int on downlinkCause umbrella hoCause power bugdet hoCause ho started by omcCause preemptionCause field dropCause low distanceCause bad ci ratioCause good ci ratioHo due slow mov msHo due to ms slow speedHo due to ms high speed
4023 or4024 or4025 or4026 or4027 or4028 or4029 or4030 or4031 or4032 or4033 or4086 or4087 or4088 or4089 or4090 or4091 or4105 or4106 or
Bsc o nonopt at
Bsc i nonopt at
Bsc i tch tch at
Bsc o tch tch at
4071
4063
4059
4067
Ho att due erfd 4111
Rf channel release ack
Old channel release in the old BTS
Bsc i nonopt
Bsc i tch tch
Bsc i success ho
Bsc o nonopt
Bsc o tch tch
Bsc o success ho
4062
4056
4010
4070
4064
4014
Signalling on the new
New channel reservation and
Signalling on the old
Channel activation ack
activation in the new BTS
channel in the old BTS
channel in the new BTS
DN9813636 199
4 Handover Measurement Signalling charts of Handover Measurement
Id:0900d805808d0166Confidential
Figure 3 Successful external TCH to TCH handover, source BSC
If the handover is made from normal to extended area, instead of counter 4027, counter 4103 is updated. If the handover is made from extended to normal area, instead of counter 4088, counter 4104 is updated. Counter 4095 is updated only if cause counter 4099 is updated.
BTS: MSC:MS: BSC:
Msc o succ switch circ pool
Msc o succ tch tch ho
Msc o succ ho
Msc o gen ho com msg
Msc o gen ho req msg
Msc o tch tch at
Cause uplink qualityCause uplink levelCause downlink qualityCause downlink levelCause distanceCause resp to msc invocatCause high int on uplinkCause high int on downlinkCause umbrella hoCause power bugdet hoCause ho started by omcCause preemptionCause field dropCause low distanceHo due slow mov msHo att due switch circ poolHo due to ms slow speedHo due to ms high speedHo att due erfd
HO command
Rf channel release
Rf channel release ack
HO required
Meas report Meas result
Clear complete
HO commandHO command
Clear command
HO measurements, HO decision -->
Channel reservation and activation
4052
4023 or4024 or4025 or4026 or4027 or4028 or4029 or4030 or4031 or4032 or4033 or4086 or4087 or4088 or4091 or4099 or4105 or4106 or4111
4009
4005
Old channel release in the old BSC
4095
4049
4004
external HO attempt
in new (target) BSC, HO command from MSC
200 DN9813636
4 Handover Measurement
Id:0900d805808d0166Confidential
Signalling charts of Handover Measurement
Figure 4 Successful external TCH to TCH handover, target BSC
Counter 4093 can be updated only if counter 4092 is updated.
BSC:
Msc i succ ho
Msc i succ switch circ pool
Msc i succ tch tch ho
Msc i att switch circ pool
Msc i tch tch ho att
MS: MSC:BTS:
HO request
Channel activation
Channel activation ack
HO request ack
HO access
HO detection HO detection
Physical info
Sabm
Establish indication
Ua
HO complete
Rr
HO complete
HO completed
4000
4093
4043
Signalling on the new BTS, connection
HO measurements and external
Channel reservation
4092
4046
HO decision done in source BSC, MSC sends HO request
and activation in the new BTS
DN9813636 201
4 Handover Measurement Signalling charts of Handover Measurement
Id:0900d805808d0166Confidential
Figure 5 Successful internal intra-cell SDCCH to SDCCH handover
MS: BTS: BSC: MSC:
Meas report Meas result
Cell sdcch attempt
Cause downlink qualityCause distanceCause high int on uplinkCause high int on downlinkCause ho started by omcCause preemptionCause low distanceCause bad ci ratioCause good ci ratio
Physical context request
Physical context confirm
Channel activation
Channel activation ack
Assignment command
Assignment command
Sabm Establish indication
Ua
Assignment complete
Assignment complete
Rr
HO performed
Cell sdcch
Int cell success ho
Rf channel release
Rf channel release ack
HO measurement,
New channel
Signalling on old channel
Signalling on new channel
Old channel release
4078
4025 or4027 or4029 or4030 or4033 or4086 or4088 or4089 or4090 or
4075
4018
HO decision --> intra-cell HO attempt, old channel
reservation and activation
202 DN9813636
4 Handover Measurement
Id:0900d805808d0166Confidential
Signalling charts of Handover Measurement
Figure 6 Successful internal inter-cell SDCCH to SDCCH handover
Counters 4069, 4071, 4014, 4066, 4070 and cause counters are updated in the source cell. Counters 4061, 4063, 4010, 4058 and 4062 are updated in the target cell. If the handover is made from normal to extended area, instead of counter 4027, counter 4103 is updated. If the handover is made from extended to normal area, instead of counter 4088, counter 4104 is updated. Counters 4063, 4071, 4070 and 4062 are updated only if the target cell is non-optimum.
MS: BTS_1: BTS_2: BSC: MSC:
Meas report Meas result
Bsc o sdcch at
Bsc i sdcch at
Bsc i nonopt at
Bsc o nonopt at
Channel activation
Channel activation ack
HO command HO command
HO access HO detection
Physical info
Sabm Establish indication
UaHO complete HO complete
Rr HO performed
Bsc o success ho
Bsc o sdcch
Bsc o nonopt
Bsc i success ho
Bsc i sdcch
Bsc i nonopt
Rf channel release
Rf channel release ack
HO measurements,
Old channel release in the old BTS
New channel reservation and
Signalling on the old channel
Signalling on the new channel
4069
4061
4063
4071
4014
4066
4070
4010
4058
4062
Cause uplink qualityCause uplink levelCause downlink qualityCause downlink qualityCause distanceCause resp to msc invocatCause high int on uplinkCause high int on downlinkCause umbrella hoCause power bugdet hoCause ho started by omcCause preemptionCause field dropCause low distanceCause bad ci ratioCause good ci ratioHo due slow mov msHo due to ms slow speedHo due to ms high speedHo att due erfd
4023 or4024 or4025 or4026 or4027 or4028 or4029 or4030 or4031 or4032 or4033 or4086 or4087 or4088 or4089 or4090 or4091 or4105 or4106 or4111
activation in the new BTS
old channel in the old BTS
in the old BTS
in the new BTS
DN9813636 203
4 Handover Measurement Signalling charts of Handover Measurement
Id:0900d805808d0166Confidential
Figure 7 Successful external SDCCH to SDCCH handover, source BSC
If the handover is made from normal to extended area, instead of counter 4027, counter 4103 is updated. If the handover is made from extended to normal area, instead of counter 4088, counter 4104 is updated. Counter 4095 is updated only if cause counter 4099 is updated.
BTS: MSC:MS: BSC:
Msc o sdcch
Msc o succ ho
Msc o gen ho com msg
Msc o gen ho req msg
Msc o sdcch at
HO command
Rf channel release
Rf channel release ack
HO required
Meas report Meas result
Clear complete
HO commandHO command
Clear command
HO measurements, HO decision -->
Cause uplink qualityCause uplink levelCause downlink qualityCause downlink qualityCause distanceCause resp to msc invocatCause high int on uplinkCause high int on downlinkCause umbrella hoCause power bugdet hoCause ho started by omcCause preemptionCause field dropCause low distanceHo due slow mov msHo att due switch circ poolHo due to ms slow speedHo due to ms high speedHo att due erfd
4023 or4024 or4025 or4026 or4027 or4028 or4029 or4030 or4031 or4032 or4033 or4086 or4087 or4088 or4091 or4099 or4105 or4106 or4111
4054
Channel reservation and
4051
4004
4009
4005
Old channel release in the old BSC
Msc o succ switch circ pool 4095
external HO attempt
activation in new (target) BSC, HO command from MSC
204 DN9813636
4 Handover Measurement
Id:0900d805808d0166Confidential
Signalling charts of Handover Measurement
Figure 8 Successful external SDCCH to SDCCH handover, target BSC
Counter 4093 is updated only if counter 4092 is updated.
BSC:
Msc i succ ho
Msc i succ switch circ pool
Msc i sdcch
Msc i att switch circ pool
Msc i sdcch att
MS: MSC:BTS:
HO request
Channel activation
Channel activation ack
HO request ack
HO access
HO detection HO detection
Physical info
Sabm
Establish indication
Ua
HO complete
Rr
HO complete
HO completed
HO measurements and external
Channel reservation
Signalling on the new BTS, connection
4000
4093
4045
4092
4048
HO decision done in source BSC, MSC sends HO request
and activation in the new BTS
DN9813636 205
4 Handover Measurement Signalling charts of Handover Measurement
Id:0900d805808d0166Confidential
Figure 9 Internal intra-cell directed retry including BSS6114: TCH assignment to the super-reuse TRX in IUO
BSC:
Int cell success ho
Cell sdcch tch
Cause dir retry
Cell sdcch tch at
MS: MSC:BTS:
Assignment requestPhysical context request
Sabm Establish indication
Channel activation
Channel activation ack
Physical context confirm
Assignment commandAssignment command
Ua
Rr Assignment complete
Rf channel release
Rf channel release ack
Assignment complete Assignment complete
Queueing indication
Alert Alert
Connect ackConnect ack
Connect Connect
Physical context request
Physical context confirm
Paging part
Radio access part (on CCCH)
DDCH establishment part
SDCCH signalling part
Cell is congested, no TCH, DR HO begins
Queueing possible and started
Signalling on FACCH - TCH
Signalling on SDCCH
TCH reservation and activation
Physical context information
SDCCH release
Connection
Conversation phase
4018
4074
4079
4077
206 DN9813636
4 Handover Measurement
Id:0900d805808d0166Confidential
Signalling charts of Handover Measurement
Figure 10 Internal inter-cell directed retry, including BSS6114 TCH assignment to the super-reuse TRX in IUO
Counters 4063, 4071, 4070 and 4062 are updated only if the target cell is non-optimum.
BSC:
Bsc i nonopt
Bsc i sdcch tch
Bsc i success ho
Bsc o nonopt
Bsc o sdcch tch
Bsc o success ho
Bsc o nonopt at
Bsc i nonopt at
Bsc i sdcch tch at
Cause dir retry
Bsc o sdcch tch at
MS: MSC:BTS:
Assignment requestPhysical context request
Sabm Establish indication
Channel activation
Channel activation ack
Physical context confirm
HO commandHO command
HO access HO detection
Physical info
Ua
Rr Assignment complete
Rf channel release
Rf channel release ack
HO complete HO complete
Queueing indication
Alert Alert
Connect ackConnect ack
Connect Connect
Paging part
Radio access part (on CCCH)
DDCH establishment part
SDCCH signalling part
Connection
Cell is congested, no TCH, DR HO begins
Queueing possible and started
TCH reservation and activation in new BTS
Signalling on SDCCH in old BTS
Signalling on FACCH - TCH in new BTS
SDCCH release in old BTS
Conversation phase
4062
4057
4010
4070
4065
4014
4071
4063
4060
4079
4068
DN9813636 207
4 Handover Measurement Signalling charts of Handover Measurement
Id:0900d805808d0166Confidential
Figure 11 External directed retry, source BSC
BSC:
Msc o gen ho com msg
Msc o sdcch tch
Msc o succ ho
Msc o gen ho req msg
Cause dir retry
Msc o sdcch tch at
MS: MSC:BTS:
Assignment requestPhysical context request
HO command
Clear command
Clear complete
Physical context confirm
HO commandHO command
Rf channel release
Rf channel release ack
Queueing indication
Ho required
Paging part
Radio access part (on CCCH)
DDCH establishment part
Cell is congested, no TCH, DR HO begins
Queueing possible and started
SDCCH signalling part
TCH reservation and activation in target BSC
HO command from MSC, signalling on SDCCH
Signalling on FACCH - TCH on target BSC
SDCCH release in source BSC
4009
4050
4004
4005
4079
4053
208 DN9813636
4 Handover Measurement
Id:0900d805808d0166Confidential
Signalling charts of Handover Measurement
Figure 12 External directed retry, target BSC
BSC:
Msc i succ ho
Msc i sdcch tch
Msc i sdcch tch ho att
MS: MSC:BTS:
HO request
Channel activation
Channel activation ack
HO request ack
HO accessHO detection HO detection
Physical info
Sabm Establish indication
Ua
HO complete
Rr
HO complete
HO completed
Alert Alert
Connect Connect
Connect ackConnect ack
External DR start done in initial BSC, MSC sends ho request
Channel reservation and activation in the new BTS
Signalling on the new BTS, connection
4000
4044
4047
Conversation phase
DN9813636 209
4 Handover Measurement Signalling charts of Handover Measurement
Id:0900d805808d0166Confidential
Figure 13 Unsuccessful internal intra-cell TCH to TCH handover due to a lack of resources
Figure 14 Unsuccessful internal inter-cell TCH to TCH handover due to a lack of resources
Counters 4071 and 4072 are updated in the source cell. Counters 4063 and 4011 are updated in the target cell. Counters 4063 and 4071 are updated only if the target cell is non-optimum.
BTS: MSC:MS: BSC:
Int cell unsucc ho due lack 4019
Meas report
Meas result
Physical context request
Physical context confirm
HO measurement,
Normal HO counters updated, see figure 1
Physical context information
New channel reservation and activation
HO ends and signalling
No free channel available
HO decision --> intra-cell HO attempt, old channel
continues on old channel
BTS_1:MS: MSC:BTS_2: BSC:
Bsc o nonopt at
Bsc o fail lack
Bsc i unsucc ho due lack
Bsc i nonopt at
Meas report
Meas result
HO measurements, HO decision -->
Normal HO counters updated, see figure 2
New channel reservation
No free channel available
HO ends and signalling
4071
4072
4011
4063
Internal inter-cell HO, old channel in old BTS
and activation in the new BTS
continues in the old channel
210 DN9813636
4 Handover Measurement
Id:0900d805808d0166Confidential
Signalling charts of Handover Measurement
Figure 15 Unsuccessful external TCH to TCH handover due to a lack of resources, source BSC
Figure 16 Unsuccessful external TCH to TCH handover due to a lack of resources, target BSC
BTS: MSC:MS: BSC:
Msc o gen ho req msg
Msc o fail lack
HO required reject
HO required
Meas report
Meas result
HO measurements, HO decision -->
Normal HO counters updated, see figure 3
Unsuccessful channel reservation
HO ends and signalling
4005
4055
external HO attempt
in new (target) BSC
continuous in the old channel
due lack of resources
BSC:
Msc i unsucc ho due lack
Msc i tch tch ho att
MS: MSC:BTS:
HO request
HO failure
HO measurements and external
Channel reservation
No free channel
HO ends and signalling
4001
4046
HO decision done in source BSC, MSC sends HO request
and activation in the new BTS
continuous on the old channel in the old BSC
DN9813636 211
4 Handover Measurement Signalling charts of Handover Measurement
Id:0900d805808d0166Confidential
Figure 17 Unsuccessful internal intra-cell TCH to TCH handover because a handover is not allowed at this phase of the call
BTS: MSC:MS: BSC:
Int cell ho not allowed
Meas report
Meas result
Physical context request
Physical context confirm
Channel activation
Channel activation ack
Rf channel release
Rf channel release ack
HO measurement, HO decision -->
Normal HO counters updated, see figure 1
New channel reservation and activation
Signalling on old channel,
Signalling on new channel
Signalling continuous on old channel
4036
intra-cell HO attempt, old channel
HO not allowed at this phase of call
212 DN9813636
4 Handover Measurement
Id:0900d805808d0166Confidential
Signalling charts of Handover Measurement
Figure 18 Unsuccessful internal inter-cell TCH to TCH handover because a handover is not allowed at this phase of the call
Counter 4038 is updated in the source cell. Counter 4081 is updated in the target cell.
Figure 19 Unsuccessful external TCH to TCH handover because a handover is not allowed, source BSC
BTS_1:MS: MSC:BTS_2: BSC:
Bsc o ho not allowed
Bsc i end of ho
Rf channel release
Rf channel release ack
Meas reportMeas result
Channel activation
Channel activation ack
HO measurements, old channel in the old BTS
Normal HO counters updated, see figure 2
New channel reservation and activation in the new BTS
Signalling on the old channel in the old BTS, HO not allowed
Signalling on the new channel in the new BTS
Signalling continuous on the old channel
4038
4081
BTS: MSC:MS: BSC:
Msc o ho not allowed
Meas report
Meas result
HO measurements, HO decision --> external HO attempt
Normal HO counters updated, see figure 3
HO not allowed
Signalling continuous on old channel
4037
DN9813636 213
4 Handover Measurement Signalling charts of Handover Measurement
Id:0900d805808d0166Confidential
Figure 20 Unsuccessful internal intra-cell TCH to TCH handover due to a failure in the activation of a new channel
Figure 21 Unsuccessful internal inter-cell TCH to TCH handover due to a failure in the activation of a new channel
Counter 4016 is updated in the source cell. Counter 4013 is updated in the target cell.
BTS: MSC:MS: BSC:
Int cell unsucc ho due bss probl 4021
Meas report
Meas result
Physical context request
Physical context confirm
Channel activation
Channel activation nack
Rf channel release
Rf channel release ack
HO measurement, HO decision -->
Normal HO counters updated,
New channel reservation and activation
Signalling continuous on old channel
Channel activation fails
intra-cell HO attempt, old channel
see figure 1
BTS_1:MS: MSC:BTS_2: BSC:
Bsc o end of ho
Bsc i unsucc ho due bss probl
Meas report
Meas result
HO measurements, old channel in the old BTS
Normal HO counters updated, see figure 2
New channel reservation and activation in the new BTS
Channel activation fails
Signalling continuous on the old channel
Rf channel release
Rf channel release ack
Channel activation
Channel activation nack
4016
4013
214 DN9813636
4 Handover Measurement
Id:0900d805808d0166Confidential
Signalling charts of Handover Measurement
Figure 22 Unsuccessful external TCH to TCH handover due to a failure in the activa-tion of a new channel, target BSC
BSC:
Msc i att switch circ pool
Msc i tch tch ho att
Msc i unsucc ho due bss probl
MS: MSC:BTS:
HO request
HO failure
Channel activation
Channel activation nack
Rf channel release
Rf channel release ack
HO measurements and external
Channel reservation and
Channel activation fails
HO ends and signalling continuous
4092
4046
4003
HO decision done in source BSC, MSC sends HO request
activation in the new BTS
on the old channel in the old BSC
DN9813636 215
4 Handover Measurement Signalling charts of Handover Measurement
Id:0900d805808d0166Confidential
Figure 23 Unsuccessful internal intra-cell TCH to TCH handover due to losing the MS during handover. The GSM timer T3107 expires.
BTS: MSC:MS: BSC:
Cell drop calls
Int cell unsucc ho due move
Timer T3107 expires
Start timer T3107
Meas report
Meas result
Physical context request
Physical context confirm
Channel activation
Channel activation ack
Assignment command
Assignment command
Rf channel release
Rf channel release ack
Rf channel release
Rf channel release ack
HO measurement, HO decision -->
Normal HO counters updated,
Signalling on old channel
MS is lost, Timer T3107 Expires
4085
4020
New channel release
Old channel release
New channel reservation and activation
intra-cell HO attempt, old channel
see figure 1
216 DN9813636
4 Handover Measurement
Id:0900d805808d0166Confidential
Signalling charts of Handover Measurement
Figure 24 Unsuccessful internal inter-cell TCH to TCH handover due to losing the MS during handover. The GSM timer T3103 expires.
Counters 4016 and 4084 are updated in the source cell. Counters 4012 and 4083 are updated in the target cell. Signalling can also be partly missing, depending on where the failure takes place.
BTS_1:MS: MSC:BTS_2: BSC:
Timer T3103 expires
Start timer T3103
Bsc i drop calls
Bsc i unsucc ho due conn
Bsc o drop calls
Bsc o end of ho
Rf channel release
Rf channel release ack
Meas report
Meas result
HO command
HO command
Channel activation
Channel activation ack
HO detection
Physical info
HO access
Rf channel release
Rf channel release ack
HO measurements, old channel in the old BTS
Normal HO counters updated, see figure 2
New channel reservation and activation in the new BTS
Signalling on the old channel in the old BTS
Signalling on the new channel in the new BTS
4083
4012
4084
4016
New channel release
Old channel release in the old BTS
DN9813636 217
4 Handover Measurement Signalling charts of Handover Measurement
Id:0900d805808d0166Confidential
Figure 25 Unsuccessful internal intra-cell TCH to TCH handover due to MS returning to the old channel
Signalling can be also partly missing, depending on where the failure happens.
BTS: MSC:MS: BSC:
Int cell unsucc ho due return 4022
Meas report
Meas result
Physical context request
Physical context confirm
Channel activation
Channel activation ack
Assignment command
Assignment command
Sabm
Establish indication
Ua
Rr
Rf channel release
Rf channel release ack
Assignment failure
Assignment failure
HO measurement, HO decision -->
Normal HO counters updated,
New channel reservation and activation
Signalling on old channel
Signalling on new channel
Signalling continuous on old channel
New channel release
intra-cell HO attempt, old channel
see figure 1
218 DN9813636
4 Handover Measurement
Id:0900d805808d0166Confidential
Signalling charts of Handover Measurement
Figure 26 Unsuccessful internal inter-cell TCH to TCH handover due to MS returning to the old channel
Counter 4015 is updated in the source cell. Counter 4012 is updated in the target cell. Signalling can be also partly missing, depending on where the failure takes place.
BTS_1:MS: MSC:BTS_2: BSC:
Bsc o unsucc ho due return
Bsc i unsucc ho due conn
HO failure
Rf channel release
Rf channel release ack
Meas report
Meas result
HO command
HO command
Channel activation
Channel activation ack
HO detection
Physical info
HO access
Establish indication
Ua
HO failure
HO failure
Rr
Sabm
New channel release
Signalling on the new channel in the new BTS
Signalling on the old channel in the old BTS
HO measurements, old channel in the old BTS
Normal HO counters updated, see figure 2
New channel reservation and activation in the new BTS
4015
4012
DN9813636 219
4 Handover Measurement Signalling charts of Handover Measurement
Id:0900d805808d0166Confidential
Figure 27 Unsuccessful external TCH to TCH handover due to MS returning to the old channel, source BSC
BTS: MSC:MS: BSC:
Msc o unsucc ho due return
Msc o gen ho com msg
Msc o gen ho req msg
HO command
Sabm
Establish indication
HO required
Meas report
Meas result
HO failure
HO command
HO command
HO failure HO failure
Ua
HO measurements, HO decision -->
Normal HO counters updated,
Channel reservation and
MS returns to old channel
4006
4009
4005
external HO attempt
see figure 3
activation in new (target) BSC, HO command from MSC
220 DN9813636
4 Handover Measurement
Id:0900d805808d0166Confidential
Signalling charts of Handover Measurement
Figure 28 Unsuccessful external TCH to TCH handover due to MS returning to the old channel, target BSC
BSC:
Msc i end of ho
Msc i att switch circ pool
Msc i tch tch ho att
MS: MSC:BTS:
HO request
Channel activation
Channel activation ack
HO request ack
Clear command
Rf channel release
Rf channel release ack
Clear complete
HO measurements and external HO
Channel reservation and
4080
4092
4046
HO failure received from BSS1
New channel release
decision done in source BSC, MSC sends HO request
activation in the new BTS
DN9813636 221
4 Handover Measurement Signalling charts of Handover Measurement
Id:0900d805808d0166Confidential
Figure 29 Unsuccessful internal intra-cell TCH to TCH handover due to call clearing during handover
Signalling can also be partly missing, depending on when the call is cleared.
BTS: MSC:MS: BSC:
Int cell call cleared during ho 4039
Meas report
Meas result
Physical context request
Physical context confirm
Channel activation
Channel activation ack
Assignment commandAssignment command
Sabm
Establish indicationUa
Disconnect
Release complete
Rf channel release
Rf channel release ack
Disconnect
Release complete
ReleaseRelease
Clear command
Channel release
Deactive SACCHDisc
UaRelease indication
Rf channel release
Rf channel release ack
Target channel release
Source channel release
Call cleared during handover by MS
Signalling on new channel
Signalling on old channel
HO measurement, HO decision -->
Normal HO counters updated, see figure 1
New channel reservation and activation
intra-cell HO attempt, old channel
222 DN9813636
4 Handover Measurement
Id:0900d805808d0166Confidential
Signalling charts of Handover Measurement
Figure 30 Unsuccessful internal inter-cell TCH to TCH handover due to call clearing during handover
Counter 4042 is updated in the source cell. Counter 4081 is updated in the target cell. Signalling can also be partly missing, depending on when the call is cleared.
BTS_1:MS: MSC:BTS_2: BSC:
Bsc i end of ho
Bsc o call cleared during ho
Release complete
Rf channel release
Rf channel release ack
Meas report
Meas result
HO commandHO command
Channel activation
Channel activation ack
HO detectionPhysical info
HO access
Establish indicationUa
Disconnect
Disconnect
Release
Sabm
Release
Release complete
Clear command
Clear complete
Channel release
Deactive SACCHDisc
UaRelease indication
Rf channel release
Rf channel release ack
HO measurements, old channel in the old BTS
Normal HO counters updated, see figure 2
Signalling on the old channel in the old BTS
New channel reservation and activation in the new BTS
Signalling on the new channel in the new BTS
Call cleared during HO by MS
4081
4042
Source channel release
Target channel release
DN9813636 223
4 Handover Measurement Signalling charts of Handover Measurement
Id:0900d805808d0166Confidential
Figure 31 Unsuccessful external TCH to TCH handover due to call clearing during handover, source BSC
Signalling can also be partly missing, depending on when the call is cleared.
BTS: MSC:MS: BSC:
Msc o call clear during ho
Msc o gen ho com msg
Msc o gen ho req msg
HO command
Rf channel release
Rf channel release ack
HO required
Meas report
Meas result
Clear complete
HO command
HO command
Clear command
Disconnect Disconnect
ReleaseRelease
Release complete
Release complete
Channel release
Deactive SACCHDisc
UaRelease indication
4041
4009
4005
Call cleared during HO by MS
Channel reservation and
Normal HO counters updated,
HO measurements, HO decision --> external HO attempt
see figure 3
activation in new (target) BSC, HO command from MSC
224 DN9813636
4 Handover Measurement
Id:0900d805808d0166Confidential
Signalling charts of Handover Measurement
Figure 32 Unsuccessful internal intra-cell TCH to TCH handover because no radio resources are available due to switch_crc_pool
Figure 33 Unsuccessful internal inter-cell TCH to TCH handover because no radio resources are available due to switch_crc_pool
Counter 4071 is updated in the source cell. Counter 4063 is updated in the target cell. Counters 4063 and 4071 are updated only if the target cell is non-optimum.
BTS: MSC:MS: BSC:
Int unsucc a int circ type 4098
Physical context confirm
Meas report
Meas result
Physical context request
HO measurement, HO decision -->
Normal HO counters updated,
New channel reservation and activation
Unsuccesful reservatio
Signalling continuous on old channel
intra-cell HO attempt, old channel
see figure 1
with cause switch_crc_pool
BTS_1:MS: MSC:BTS_2: BSC:
Bsc i unsucc a int circ type
Bsc o unsucc a int circ type
Bsc o nonopt at
Bsc i nonopt at
Meas report
Meas result
HO measurements, old channel in the old BTS
Normal HO counters updated, see figure 2
New channel reservation and activation in the new BTS
Unsuccessful reservation with cause switch_crc_pool
Signalling continuous on old channel
4097
4096
4071
4063
DN9813636 225
4 Handover Measurement Signalling charts of Handover Measurement
Id:0900d805808d0166Confidential
Figure 34 Unsuccessful external TCH to TCH handover because no radio resources are available due to switch_crc_pool, target BSC
BSC:
Msc i unsucc due a if crc
Msc i att switch circ pool
Msc i tch tch ho att
MS: MSC:BTS:
HO request
HO failure
HO measurements and
Channel reservation and
Unsuccessful reservation
Signalling continuous on old channel
4101
4092
4046
external HO decision done in source BSC, MSC sends HO request
activation in the new BTS
with cause switch_crc_pool
226 DN9813636
4 Handover Measurement
Id:0900d805808d0166Confidential
Signalling charts of Handover Measurement
Figure 35 Internal intra-cell handover change to external due to circuit pool switching, source side
MS BTS BSC MSC
004076 CELL_TCH_TCH_AT
HO signalling in the target side
Channel reservation and activation in the new target side, HO command from the MSC
HANDOVER COMMAND
004030 CAUSE_INTFER_DWN
004098 HO_UNSUCC_A_INT_CIRC_TYPE
004099 HO_ATT_DUE_SWITCH_CIRC_POOL
004094 MSC_O_ATT_SWITCH_CIRC_POOL
004052 MSC_O_TCH_TCH_AT
004004 MSC_O_SUCC_HO
004049 MSC_O_TCH_TCH
004095 MSC_O_SUCC_SWITCH_CIRC_POOL
004005 MSC_O_HO_RQ_MSG
004009 MSC_O_HO_COMM
HANDOVER COMMANDHANDOVER COMMAND
MEASUREMENT REPORT MEASUREMENT RESULT
Decision to start pool switching procedure is made
MSC switches circuit pool
BSC-internal intra-cell HO started due to high
interference on downlink, for example
Source-TCH is released
CLEAR COMMAND
HANDOVER REQUIRED (switch circuit pool)
PHYSICAL CONTEXT REQUEST
PHYSICAL CONTEXT CONFIRM
DN9813636 227
4 Handover Measurement Signalling charts of Handover Measurement
Id:0900d805808d0166Confidential
Figure 36 Internal intra-cell handover change to external due to circuit pool switching, target side
MS BTS BSC MSC
Ho decision of the circuit pool switch made in the source side
HO signalling in the source side, the MSC sends a HO command
HANDOVER REQUEST
HANDOVER ACCESS
HANDOVER DETECTIONHANDOVER DETECTION
HANDOVER COMPLETE HANDOVER COMPLETE
HANDOVER COMPLETE
004204 INT_SUCC_HO_TO_EXT
004092 MSC_I_ATT_SWITCH_CIRC_POOL
004046 MSC_I_TCH_TCH_AT
004000 MSC_I_SUCC_HO
004043 MSC_I_TCH_TCH
004093 MSC_I_SUCC_SWITCH_CIRC_POOL
PHYSICAL INFO
SABM
ESTABLISH INDICATION
UA
RR
CHANNEL ACTIVATION
CHANNEL ACTIVATION ACK
HANDOVER REQUEST ACKNOWLEDGE
228 DN9813636
4 Handover Measurement
Id:0900d805808d0166Confidential
Signalling charts of Handover Measurement
Figure 37 Successful handover type reselection from an internal inter-cell TCH to TCH handover to an external handover due to switching the circuit pool
MS BSC MSC
HANDOVER COMMAND
CLEAR COMMAND
004203 BSC_O_SUCC_HO_TO_EXT
004067 BSC_O_TCH_TCH_AT
004059 BSC_I_TCH_TCH_AT (updated for target cell)
004096 BSC_O_UNSUCC_A_INT_CIRC_TYPE
004099 HO_ATT_DUE_SWITCH_CIRC_POOL
004094 MSC_O_ATT_SWITCH_CIRC_POOL
004052 MSC_O_TCH_TCH_AT
004097 BSC_I_UNSUCC_A_INT_CIRC_TYPE(updated for target cell)
004004 MSC_O_SUCC_HO
004049 MSC_O_TCH_TCH
004095 MSC_O_SUCC_SWITCH_CIRC_POOL
004005 MSC_O_HO_RQ_MSG
004009 MSC_O_HO_COMM
004030 CAUSE_INTFER_DWN
HANDOVER COMMANDHANDOVER COMMAND
MSC switches circuit pool
Decision to start pool switching procedure is made
BSC-internal inter-cell HO started due to high
interference on downlink, for example
BTS
Channel reservation and activation in the target cell
Source-TCH is released
HO signalling in the target cell
HANDOVER REQUIRED (switch circuit pool)
MEASUREMENT RESULTMEASUREMENT REPORT
DN9813636 229
4 Handover Measurement Signalling charts of Handover Measurement
Id:0900d805808d0166Confidential
Figure 38 Internal inter-cell handover change to external handover due to circuit pool switching, target-cell
BTSMS BSC MSC
HO decision of the circuit pool switch made in the source cell
HO signalling in the source cell, the MSC sends a HO command
HANDOVER REQUEST
HANDOVER ACCESS HANDOVER DETECTIONHANDOVER DETECTION
HANDOVER COMPLETE HANDOVER COMPLETE HANDOVER COMPLETE
004092 MSC_I_ATT_SWITCH_CIRC_POOL
004046 MSC_I_TCH_TCH_AT
PHYSICAL INFO
SABM ESTABLISH INDICATION
UA
RR
004000 MSC_I_SUCC_HO
004043 MSC_I_TCH_TCH
004093 MSC_I_SUCC_SWITCH_CIRC_POOL
CHANNEL ACTIVATION
004202 BSC_I_INT_SUCC_HO_TO_EXT
HANDOVER REQUEST ACKNOWLEDGECHANNEL ACTIVATION ACK
230 DN9813636
4 Handover Measurement
Id:0900d805808d0166Confidential
Signalling charts of Handover Measurement
Figure 39 Unsuccessful external TCH to TCH handover because the MSC rejects the handover due to various causes, source BSC
BTS: MSC:MS: BSC:
Msc o unsucc due a if crcMsc o fail lackMsc o adj cell id errMsc o end of hoMsc o ho not allowed
Msc o gen ho req msg
HO reject
HO required
Meas report
Meas result
HO measurements, HO decision --> external HO attempt
Normal HO counters updated, see figure 3
Channel reservation and activation in new (target) BSC
MSC rejects handover with different causes
Call continuous on old channel
4102 or4055 or4100 or4007 or4037
4005
DN9813636 231
4 Handover Measurement Signalling charts of Handover Measurement
Id:0900d805808d0166Confidential
Figure 40 Unsuccessful external TCH to TCH handover due to GSM timer T8 expiry, source BSC
Counter 4107 is also updated if the MSC sends a CLEAR_COMMAND message with a cause other than call controlor handover successful.
BTS: MSC:MS: BSC:
Msc o call drop dur ho
Timer T8 Expires
Start timer T8
Msc o end of ho
Msc o gen ho com msg
Msc o gen ho req msg
HO command
Rf channel release
Rf channel release ack
HO required
Meas report
Meas result
Clear complete
HO command
HO command
Clear command
Clear request
HO measurements, HO decision -->
Normal HO counters updated, see figure 3
Channel reservation and
4009
4005
Timer T8 expires on source BSC
4107
4007
external HO attempt
activation in new (target) BSC, HO command from MSC
while waiting for Clear command
232 DN9813636
4 Handover Measurement
Id:0900d805808d0166Confidential
Signalling charts of Handover Measurement
Figure 41 Unsuccessful external TCH to TCH handover due to adjacent cell error, source BSC
The MSC sends a HO_REJECT message with cause invalid_cell or the source side BSC notices that the target side identification information is invalid in the HO_COMMAND message.
BTS: MSC:MS: BSC:
Msc o adj cell id err
Msc o gen ho req msg
HO reject
HO required
Meas report
Meas result
HO failure
HO measurements, HO decision -->
Normal HO counters updated, see figure 3
Channel reservation and activation
Target cell information (BCCH
BSC radio network configuration database,
Call continuous on old channel
4100
4005
external HO attempt
in new (target) BSC, HO reject from MSC
frequency or / and BSIC) differs from that in source
Alarm 2725 is set
DN9813636 233
4 Handover Measurement Signalling charts of Handover Measurement
Id:0900d805808d0166Confidential
Figure 42 Unsuccessful internal intra-cell TCH to TCH handover, caused by an internal timer expiry in the BSC or a CONNECTION_FAILURE, ERROR_INDICATION, or ERROR_REPORT message coming to the target channel
The MS returns to the old channel.
BTS: MSC:MS: BSC:
Int cell unsucc ho due return 4022
Error report
Meas report
Meas result
Physical context request
Physical context confirm
Channel activation
Channel activation ack
Assignment command
Assignment command
Connection failure
Error indication
Assignment failure
Rf channel release
Rf channel release ack
Assignment failure
Call continuous on old channel
Signalling on old channel
Signalling on new channel
Signalling on old channel
New channel reservation and activation
Normal HO counters updated,
HO measurement, HO decision --> intra-cell HO attempt, old channel
see figure 1
234 DN9813636
4 Handover Measurement
Id:0900d805808d0166Confidential
Signalling charts of Handover Measurement
Figure 43 Unsuccessful internal inter-cell TCH to TCH handover due to a radio link failure during handover
A RELEASE_INDICATION, CONNECTION_FAILURE or ERROR_INDICATION message comes to the source channel. The signalling can be partly missing depending on where the failure takes place. Counter 4017 is updated in the source cell. Counter 4081 is updated in the target cell.
BTS_1:MS: MSC:BTS_2: BSC:
Bsc i end of ho
Bsc o end of ho due bss
Rf channel release
Rf channel release
Rf channel release ack
Meas report
Meas result
Release indication
Connection failure
Channel activation
Channel activation ack
Error indication
Rf channel release ack
4081
4017
HO measurements, old channel in the old BTS
New channel reservation and activation in the new BTS
Normal HO counters updated, see figure 2
Signalling on the old channel in the old BTS
New TCH channel release in the new BTS
Old channel release in the old BTS
DN9813636 235
4 Handover Measurement Signalling charts of Handover Measurement
Id:0900d805808d0166Confidential
Figure 44 Unsuccessful internal inter-cell TCH to TCH handover caused by internal timer expiry or a failure in the connection of a bi-directional speech path
Counters 4017 and 4084 are updated in the source cell. Counters 4013 and 4083 are updated in the target cell.
BTS_1:MS: MSC:BTS_2: BSC:
Failure
Bsc i drop calls
Bsc i unsucc ho due bss probl
Bsc o drop calls
Bsc o end of ho due bss
Rf channel release
Rf channel release ack
Meas reportMeas result
HO commandHO command
Channel activation
Channel activation ack
HO detectionPhysical info
HO access
Establish indicationUa
HO complete HO complete
Rr
Sabm
Rf channel release
Rf channel release ack
Clear request
Clear command
Channel release
Deactive SACCHDisc
Release indicationUa
Clear complete
Target channel release in new BTS
Old channel release in the old BTS
4083
4013
4084
4017
Connection of bidirection speech path fails or internal time r expires
Signalling on the new channel in the new BTS
Signalling on the old channel in the old BTS
New channel reservation and activation in the new BTS
Normal HO counters updated, see figure 2
HO measurements, old channel in the old BTS
236 DN9813636
4 Handover Measurement
Id:0900d805808d0166Confidential
Signalling charts of Handover Measurement
Figure 45 Unsuccessful external TCH to TCH handover due to a radio link failure during handover, source BSC
A CONNECTION_FAILURE, ERROR_INDICATION or ERROR_REPORT message comes to the source channel, or an internal timer expires.
BTS: MSC:MS: BSC:
Msc o end of ho due bss
Connection failure
Rf channel release
Rf channel release ack
HO required
Meas report
Meas result
HO failure
Error indication
Error report
4008
Old channel release in the old BSC
Failures on source
Channel reservation and activation in new (target) BSC
Normal HO counters updated, see figure 3
HO measurements, HO decision --> external HO attempt
DN9813636 237
4 Handover Measurement Signalling charts of Handover Measurement
Id:0900d805808d0166Confidential
Figure 46 Unsuccessful external TCH to TCH handover due to a radio link failure during handover, target BSC
A CONNECTION_FAILURE, ERROR_INDICATION or ERROR_REPORT message comes to the target channel, or an internal timer expires. Signalling can be partly missing depending on where the failure takes place.
BSC:
Msc i unsucc ho due conn
Msc i att switch circ pool
Msc i tch tch ho att
MS: MSC:BTS:
HO request
Channel activation
Channel activation ack
HO request ack
HO access
HO detection HO detection
Physical info
Sabm
Establish indication
Ua
Error indication
Error report
Connection failure
HO failure
Rf channel release
Rf channel release ack
4002
4092
4046
Signalling on the new BTS, connection
Channel reservation and
HO measurements and external HO decision done in source BSC, MSC sends HO request
activation in the new BTS
238 DN9813636
4 Handover Measurement
Id:0900d805808d0166Confidential
Signalling charts of Handover Measurement
Figure 47 Unsuccessful external TCH or TCH handover, source BSC
The GSM timer T7 expires in the source BSC.
BTS: MSC:MS: BSC:
Msc o fail lack
Timer T7 expires
Start timer T7
Msc o gen ho required msg
HO required
Meas report
Meas result
Call continuous on old channel
4055
4005
Timer T7 expires on source BSC
Channel reservation and activation in new (target) BSC
Normal HO counters updated, see figure 3
HO measurements, HO decision --> external HO attempt
DN9813636 239
4 Handover Measurement Signalling charts of Handover Measurement
Id:0900d805808d0166Confidential
Figure 48 Unsuccessful external TCH to TCH handover, target BSC
The handover fails because the MSC sends a CLEAR_COMMAND message with a cause other than call control or radio interface failure revision to old channel. Counter 4108 is also updated if the GSM timer T9113 expires.
BSC:
Msc i call poss drop dur ho
Msc i end of ho
Msc i att switch circ pool
Msc i tch tch ho att
MS: MSC:BTS:
HO request
Channel activation
Channel activation ack
HO request ack
Clear command
Rf channel release
Rf channel release ack
Clear complete
New channel release
HO failure received from BSS1
Channel reservation
HO measurements and external
4108
4080
4092
4046
HO decision done in source BSC, MSC sends HO request
and activation in the new BTS
240 DN9813636
4 Handover Measurement
Id:0900d805808d0166Confidential
Signalling charts of Handover Measurement
Figure 49 Successful internal intra-cell TCH TCH HSCSD handover from two to one channel
BTS: MSC:MS: BSC:
Physical context request
Physical context confirm
Channel activation
Assignment command
Assignment command
SabmEstablish indication
Ua
Rr HO performed
Rf channel release
Rf channel release ack
Assignment completeAssignment complete
Meas report Meas result
Channel activation ack
Rf channel release
Rf channel release ack
Normal intra-cell HO counters
Old channels are released
Signalling on new channel
Signalling on old channel
New channel reservation and activation
Only one suitable channel free
Normal intra-cell HO cause
HO measurement, HO decision -->
Two channel allocated
Intra succ dec for HSCSD 4127
Intra succ for HSCSD 4125
Cell TCH TCH 4073
Intra att for HSCSD 4124
Cell TCH TCH attempt 4076
Int cell success ho 4018
for HSCSD call on source
intra-cell HO attempt, old channel
counter is updated, see figure 1
are updated, see figure 1
DN9813636 241
4 Handover Measurement Signalling charts of Handover Measurement
Id:0900d805808d0166Confidential
Figure 50 Successful internal intra-cell TCH TCH HSCSD handover from one to three channels
BTS: MSC:MS: BSC:
Physical context request
Physical context confirm
Channel activation
Assignment commandAssignment command
Sabm Establish indication
Ua
Rr HO performed
Rf channel release
Rf channel release ack
Assignment completeAssignment complete
Meas report Meas result
Channel activation ack
Channel activation
Channel activation
Channel activation ack
Channel activation ack
One channel allocated
HO measurement, HO decision -->
Normal intra-cell HO cause
Only one suitable channel free
New channel reservation and activation
Signalling on old channel
Signalling on new channel
Normal intra-cell HO counters are
Old channels are released
Intra att for HSCSD 4124
Intra succ inc for HSCSD 4126
Cell TCH TCH 4073
Int cell success ho 4018
Cell TCH TCH attempt 4076
Intra succ inc for HSCSD 4126
intra-cell HO attempt, old channel
for HSCSD call on source
counter is updated, see figure 1
updated, see figure 1
242 DN9813636
4 Handover Measurement
Id:0900d805808d0166Confidential
Signalling charts of Handover Measurement
Figure 51 Successful internal inter-cell TCH TCH HSCSD handover from three to one channel
BTS_1:MS: MSC:BTS_2: BSC:
HO performed
Rf channel release
Rf channel release ack
Meas report Meas result
HO commandHO command
HO detection
Physical info
HO access
Establish indication
Ua
HO complete HO complete
Rr
Sabm
Rf channel release ack
Rf channel release
Rf channel release
Rf channel release ack
Three channel allocated for HSCSD call on source
HO measurements, old channel in the old BTS
Normal inter-cell HO cause counter is updated, see figure 2
New channel reservation and activation in the new BTS
Only two suitable channel free
Channel activation
Channel activation ack
Channel activation
Channel activation ack
Signalling on the old channel in the old BTS
Signalling on the new channel in the new BTS
Old channel release in the old BTS
Bsc i succ dec for HSCSD 4123
Bsc i succ for HSCSD 4121
Bsc o succ for HSCSD 4119
Bsc i TCH TCH 4056
Bsc i nonopt 4062
Bsc i success ho 4010
Bsc o TCH TCH 4064
Bsc o nonopt 4070
Bsc o success ho 4014
Bsc i nonopt att 4063
Bsc o nonopt att 4071
Bsc o att for HSCSD 4118
Bsc i att for HSCSD 4120
Bsc o TCH TCH att 4067
Bsc i TCH TCH att 4059
DN9813636 243
4 Handover Measurement Signalling charts of Handover Measurement
Id:0900d805808d0166Confidential
Figure 52 Successful internal inter-cell TCH TCH HSCSD handover from two to three channels
BTS_1:MS: MSC:BTS_2: BSC:
HO performed
Rf channel release
Meas report Meas result
HO commandHO command
Channel activation
Channel activation ack
HO detection
Physical info
HO access
Establish indication
Ua
HO complete HO complete
Rr
Sabm
Rf channel release ack
Channel activation
Channel activation
Channel activation ack
Channel activation ack
Rf channel release
Rf channel release ack
Old channel release in the old BTS
HO measurements, old channel in the old BTS
New channel reservation and activation in the new BTS
Normal inter-cell HO cause counter is updated, see figure 2
Two channel allocated for HSCSD call on source
Signalling on the new channel in the new BTS
Signalling on the old channel in the old BTS
Bsc i succ inc for HSCSD 4122
Bsc i succ for HSCSD 4121
Bsc o succ for HSCSD 4119
Bsc i TCH TCH 4056
Bsc o TCH TCH 4064
Bsc i nonopt 4062
Bsc i success ho 4010
Bsc o nonopt 4070
Bsc o success ho 4014
Bsc i nonopt att 4063
Bsc o nonopt att 4071
Bsc o att for HSCSD 4118
Bsc i att for HSCSD 4120
Bsc o TCH TCH att 4067
Bsc i TCH TCH att 4059
244 DN9813636
4 Handover Measurement
Id:0900d805808d0166Confidential
Signalling charts of Handover Measurement
Figure 53 Successful external TCH TCH HSCSD handover from two to two channels, source BSC
BTS: MSC:MS: BSC:
HO command
Rf channel release
Rf channel release ack
HO required
Meas report Meas result
Clear complete
HO commandHO command
Clear command
Rf channel release
Rf channel release ack
HO measurements, HO decision -->
Normal external HO cause counter
Channel reservation and activation
Old channels are released in the old BSC
Msc o succ TCH TCH ho 4049
Msc o success ho 4004
Msc o gen ho com msg 4009
Msc o gen ho req msg 4005
Msc o TCH TCH att 4052
Msc o succ for HSCSD 4113
Msc o att for HSCSD 4112
external HO attempt
is updated, see figure 3
in new (target) BSC, HO command from MSC
DN9813636 245
4 Handover Measurement Signalling charts of Handover Measurement
Id:0900d805808d0166Confidential
Figure 54 Successful external TCH TCH HSCSD handover from four to one channel, target BSC
Counter 4117 is updated only if the target BSC has received information on the amount of channels allocated in the source BSC.
BSC:MS: MSC:BTS:
HO request
Channel activation
Channel activation ack
HO request ack
HO access HO detection HO detection
Physical info
Sabm Establish indication
Ua
HO complete
Rr
HO complete
HO completed
Only one suitable channel free
Channel reservations and activations in the new BTS
HO measurem. and external HO decision done in source BSC, MS C sends HO request
Four channel allocated for HSCSD on source BSC
Signalling on the new BTS, connection
Msc i succ dec for HSCSD 4117
Msc i succ for HSCSD 4115
Msc i succ TCH TCH ho 4043
Msc i TCH TCH ho att 4046
Msc i success ho 4000
Msc i att for HSCSD 4114
246 DN9813636
4 Handover Measurement
Id:0900d805808d0166Confidential
Signalling charts of Handover Measurement
Figure 55 Successful external TCH TCH HSCSD handover from one to two channels, target BSC
Counter 4116 is updated only if the target BSC has received information on the amount of channels allocated in the source BSC.
BSC:MS: MSC:BTS:
HO request
Channel activation
Channel activation ack
HO request ack
HO access HO detection HO detection
Physical info
Sabm Establish indication
Ua
HO complete
Rr
HO complete
HO completed
Channel activation
Channel activation ack
Signalling on the new BTS, connection
Only one suitable channel free
HO measurem. and external HO decision done in source BSC, MS C sends HO request
One channel allocated for HSCSD on source BSC
Channel reservations and activations in the new BTS
Msc i succ TCH TCH ho 4043
Msc i succ for HSCSD 4115
Msc i succ inc for HSCSD 4116
Msc i TCH TCH ho att 4046
Msc i success ho 4000
Msc i att for HSCSD 4114
DN9813636 247
4 Handover Measurement Signalling charts of Handover Measurement
Id:0900d805808d0166Confidential
Figure 56 Internal intra-cell direct access from regular DCCH to a super-reuse TRX
The optional BSS7057 Direct Access to Super-reuse TRX in IUO must be activated.
BSC:
Int cell success hot
Cell sdcch tch att
Cell sdcch tch
Ho due direct access att
MS: MSC:BTS:
Assignment request
Physical context request
Sabm Establish indication
Channel activation
Channel activation ack
Physical context confirm
Assignment commandAssignment command
Ua
Rr
Assignment complete
Rf channel release
Rf channel release ack
Assignment complete Assignment complete
Alert Alert
Connect ackConnect ack
Connect Connect
Basic call signalling
4077
4128
Physical context information
TCH reservation and activation
Signalling on SDCCH
Signalling on FACCH - TCH
4018
4074
SDCCH release
Connection
Conversation phase
248 DN9813636
4 Handover Measurement
Id:0900d805808d0166Confidential
Signalling charts of Handover Measurement
Figure 57 Internal inter-cell direct access from the TCH on a child TRX to the TCH on a parent TRX
BSS7057 Direct Access to Super-reuse TRX in IUO must be activated. Counters 4031, 4067, 4014 and 4064 are updated in the source cell. Counters 4059, 4010 and 4056 are updated in the target cell.
BSC:
Cause umbrella ho
Bsc o tch tch
Bsc i tch tch
Bsc i success ho
Bsc i tch tch at
Bsc o tch tch at
Bsc o success ho
MS: MSC:BTS:
Meas report
HO access
Sabm Establish indication
Channel activation
Channel activation ack
HO detection
HO commandHO command
Ua
Rr HO performed
Rf channel release
Rf channel release ack
HO complete HO complete
Physical info
Meas result
HO measurements, old channel in the old BTS
4031
4064
4056
4010
4059
4067
4014
New channel reservation and activation in the new BTS
Signalling on the old channel in the old BTS
Signalling on the new channel in the new BTS
Old channel release in the old BTS
DN9813636 249
4 Handover Measurement Signalling charts of Handover Measurement
Id:0900d805808d0166Confidential
Figure 58 Handover attempt due to a BSC controlled TRHO
Figure 59 Handover attempt due to DADL/B
Channel activation
Channel activation ack
Rf resource indication
HO signalling continues
HO measurements
BSC:MS: MSC:BTS:
Cause HO started by traffic reason 4035
Channel activation
Channel activation ack
Assignment request
Physical context request
Physical context confirm
BSC:MS: MSC:BTS:
HO attempt due to dadl/b 4129
Signalling
Signalling continues
250 DN9813636
4 Handover Measurement
Id:0900d805808d0166Confidential
Signalling charts of Handover Measurement
Figure 60 AMR packing or unpacking handover
MS BTS BSC MSC
MEASUREMENT REPORT MEASUREMENT RESULT
004076 CELL_TCH_TCH_AT
R F C H A N N E L R E L E A S E
R F C H A N N E L R E L E A S E A C K
004142 HO_ATT_FOR_AMR_TO_HR or004143 HO_ATT_FOR_AMR_TO FR
CHANNEL ACTIVATION
CHANNEL ACTIVATION ACK
ASSIGNMENT COMMAND
ASSIGNMENT COMMAND
SABM ESTABLISH INDICATION
UA
ASSIGNMENT COMPLETE ASSIGNMENT COMPLETE
RR
HANDOVER PERFORMED
004073 CELL_TCH_TCH
004018 CELL_SUCC_HO
004205 HO_SUCC_AMR_FR_TO_HR or004206 HO_SUCC_AMR_HR_TO_FR
BSC-internal intra-cell HO started due to AMR
packing or unpacking HO
PHYSICAL CONTEXT CONFIRM
PHYSICAL CONTEXT REQUEST
DN9813636 251
4 Handover Measurement Signalling charts of Handover Measurement
Id:0900d805808d0166Confidential
Figure 61 Circuit pool switch during inter-system handover, target-BSC
BTSMS BSC MSC
HANDOVER REQUEST
HANDOVER ACCESS HANDOVER DETECTIONHANDOVER DETECTION
HANDOVER COMPLETE HANDOVER COMPLETE HANDOVER COMPLETE
HANDOVER REQUEST
HO measurements and external HO decision made in the source cell, MSC sends HO request
Signalling on the target cell, connection
MSC switches circuit pool
Decision to start pool switching procedure is made
004208 MSC_I_WCDMA_SUCC_POOL_SWITCH
CHANNEL ACTIVATION
PHYSICAL INFO
SABM ESTABLISH INDICATION
UA
004149 MSC_HO_WCDMA_RAN_SUCC
004153 MSC_GEN_SYS_WCDMA_RAN_HO_REQ
004154 MSC_GEN_SYS_WCDMA_RAN_HO_COM
04144 MSC_TCH_HO_FROM_WCDMA_RAN_ATT
004207 MSC_I_WCDMA_UNSUC_POOL_SWITCH
04144 MSC_TCH_HO_FROM_WCDMA_RAN_ATT
HANDOVER FAILURE (switch circuit pool)
CHANNEL ACTIVATION ACK HANDOVER REQUEST ACKNOWLEDGE
252 DN9813636
4 Handover Measurement
Id:0900d805808d0166Confidential
Signalling charts of Handover Measurement
Figure 62 Circuit pool switch during external handover, target-BSC
HANDOVER COMPLETE HANDOVER COMPLETE
HO measurements and external HO decision made in source-BSC, the MSC sends HO a request
Signalling on the new BTS, connection
MSC switches circuit pool
Decision to start pool switching procedure is made
004005 MSC_O_HO_RQ_MSG
004009 MSC_O_HO_COMM
PHYSICAL INFO
SABM ESTABLISH INDICATION
UA
004000 MSC_I_SUCC_HO
004043 MSC_I_TCH_TCH
004046 MSC_I_TCH_TCH_AT
004092 MSC_I_ATT_SWITCH_CIRC_POOL
HANDOVER REQUEST ACKNOWLEDGE
HANDOVER COMPLETE
BTSMS BSC MSC
HANDOVER ACCESS HANDOVER DETECTION
HO measurements and external HO decision made in the source-BSC, the MSC sends HO a request
Signalling on the new BTS, connection
MSC switches circuit pool
Decision to start pool switching procedure is made
004101 MSC_CONTROLLED_IN_HO
004005 MSC_O_HO_RQ_MSG
004009 MSC_O_HO_COMM
CHANNEL ACTIVATION
004000 MSC_I_SUCC_HO
004043 MSC_I_TCH_TCH
004093 MSC_I_SUCC_SWITCH_CIRC_POOL
004046 MSC_I_TCH_TCH_AT
004046 MSC_I_TCH_TCH_AT
004092 MSC_I_ATT_SWITCH_CIRC_POOL
CHANNEL ACTIVATION ACK
HANDOVER DETECTION
HANDOVER REQUEST
HANDOVER REQUEST
HANDOVER COMPLETE
HO measurements and external HO decision made in source-BSC, the MSC sends HO a request
Signalling on the new BTS, connection
MSC switches circuit pool
Decision to start pool switching procedure is made
004005 MSC_O_HO_RQ_MSG
004009 MSC_O_HO_COMM
ESTABLISH INDICATION
UA
004000 MSC_I_SUCC_HO
004043 MSC_I_TCH_TCH
004046 MSC_I_TCH_TCH_AT
004092 MSC_I_ATT_SWITCH_CIRC_POOL
BTSMS BSC MSC
HO measurements and external HO decision made in the source-BSC, the MSC sends a HO request
Signalling on the new BTS, connection
MSC switches circuit pool
Decision to start pool switching procedure is made
004101 MSC_CONTROLLED_IN_HO
004005 MSC_O_HO_RQ_MSG
004009 MSC_O_HO_COMM
004000 MSC_I_SUCC_HO
004043 MSC_I_TCH_TCH
004093 MSC_I_SUCC_SWITCH_CIRC_POOL
004046 MSC_I_TCH_TCH_AT
004046 MSC_I_TCH_TCH_AT
004092 MSC_I_ATT_SWITCH_CIRC_POOL
CHANNEL ACTIVATION ACK
HANDOVER FAILURE (switch circuit pool)
DN9813636 253
4 Handover Measurement Signalling charts of Handover Measurement
Id:0900d805808d0166Confidential
Figure 63 BSS Internal Handover with MSC Support - Local Handover
Codec change with non matching codec configuration from FR AMR to HR AMR, target L-BTS2 allows only HR-mode; TC in MGW
L-BTS1 L-BSC MGW MSSL-BTS2
Packet Abis AoIP
MEASUREMENT RESULT
INTERNAL HANDOVER REQUIRED
MEASUREMENT REPORT
L-MS
Um
BSC decides HO required due to e.g. radio network quality.Relevant handover cause counter updated
No matching codec configuration, MSS controlled HO required
004052 MSC_O_TCH_TCH_AT
004046 MSC_I_TCH_TCH_AT
004244 BSS_INT_HO_REQ_REQUESTS
INTERNAL HANDOVER COMMAND
004245 BSS_INT_HO_COMMANDS
001010 TCH_REQUEST
057016 TCH_SEIZURES
001008 TCH_HO_SEIZ
001184 TCH_CALL_REQ_FOR_AMR
001102 TCH_FULL_REQ_SUCC_UNSUCC
001104 TCH_FULL_REQ_PREFERRED
CHANNEL ACTIVATION
CHANNEL ACTIVATION ACK
HANDOVER COMMAND
001196 BSC_O_HO_CMD_ASSGN
HANDOVER ACCESS
HANDOVER DETECTION
PHYSICAL INFO
SABM
ESTABLISH INDICATIONUA
HANDOVER COMPLETE
RR
004248 BSS_INT_HO_SUCCESSFUL
057034 TCH_HO_ASSIGN
CLEAR COMMAND
051013 INTERNAL_INTER_HO_SUCC
057012 INT_INTER_HO_SUCC
004004 MSC_O_SUCC_HO
004049 MSC_O_TCH_TCH
RF CHANNEL RELEASE
RF CHANNEL RELEASE ACK
Packet Abis AoIP
004246 BSS_INT_HO_SRC_SUCC
001118 TCH_REJ_REQ_DUE_LACK_FR
HANDOVER COMMAND
HANDOVER COMPLETE
HANDOVER COMPLETE
Um
254 DN9813636
4 Handover Measurement
Id:0900d805808d0166Confidential
Signalling charts of Handover Measurement
Figure 64 BSS Internal Handover with MSC Support - Distant Handover
Codec change with non matching codec configuration from FR AMR to HR AMR, target L-BTS2 allows only HR-mode; TC in MGW
D-BSCMSS D-BTS2
Packet AbisAoIP
INTERNAL HANDOVER ENQUIRY
D-MS
Um
Packet AbisAoIP Um
D-BTS1
004244 BSS_INT_HO_REQ_REQUESTS
004249 BSS_INT_HO_ENQUIRY
INTERNAL HANDOVER REQUIRED
INTERNAL HANDOVER COMMAND
004043 MSC_I_TCH_TCH
004245 BSS_INT_HO_COMMANDS
004142 HO_ATT_FOR_AMR_TO_HR
001010 TCH_REQUEST
057016 TCH_SEIZURES
001008 TCH_HO_SEIZ
001184 TCH_CALL_REQ_FOR_AMR
001103 TCH_HALF_REQ_SUCC_UNSUCC
001105 TCH_HALF_REQ_PREFERRED
001107 TCH_HALF_SUCC_SEIZ
001117 TCH_HALF_SEIZ_INT_HO_CH_RATE
001183 HALF_TCH_SEIZ_INTRA_AMR_HO
CHANNEL ACTIVATION
CHANNEL ACTIVATION ACK
HANDOVER COMMAND
HANDOVER COMMAND
001196 BSC_O_HO_CMD_ASSGN
HANDOVER ACCESS
HANDOVER DETECTION
PHYSICAL INFO
SABM
ESTABLISH INDICATION
UA
HANDOVER COMPLETE
RR004248 BSS_INT_HO_SUCCESSFUL
057034 TCH_HO_ASSIGN
CLEAR COMMAND
RF CHANNEL RELEASE
RF CHANNEL RELEASE ACK
HANDOVER COMPLETE
HANDOVER COMPLETE
051013 INTERNAL_INTER_HO_SUCC
057012 INT_INTER_HO_SUCC
004004 MSC_O_SUCC_HO
004049 MSC_O_TCH_TCH
004246 BSS_INT_HO_SRC_SUCC
DN9813636 255
4 Handover Measurement Signalling charts of Handover Measurement
Id:0900d805808d0166Confidential
Figure 65 Intra BSC HO; interface type change from AoIP to AoTDM; TC in MGW
BTS1 BSC MGW MSSBTS2
Packet Abis AoIP
MEASUREMENT RESULT
INTERNAL HANDOVER REQUIRED
MEASUREMENT REPORT
MS
Um
BSC decides HO required from IP BTS tolegacy BTS due to e.g. radio network quality
No matching interface type available, MSS controlled HO required
004052 MSC_O_TCH_TCH_AT
004046 MSC_I_TCH_TCH_AT
004244 BSS_INT_HO_REQ_REQUESTS
INTERNAL HANDOVER COMMAND
004245 BSS_INT_HO_COMMANDS
001010 TCH_REQUEST
057016 TCH_SEIZURES
001008 TCH_HO_SEIZ
CHANNEL ACTIVATION
CHANNEL ACTIVATION ACK
HANDOVER COMMAND
001196 BSC_O_HO_CMD_ASSGN
HANDOVER ACCESS
HANDOVER DETECTION
PHYSICAL INFO
SABM
ESTABLISH INDICATIONUA
HANDOVER COMPLETE
RR
004248 BSS_INT_HO_SUCCESSFUL
057034 TCH_HO_ASSIGN
CLEAR COMMAND
051013 INTERNAL_INTER_HO_SUCC
057012 INT_INTER_HO_SUCC
004004 MSC_O_SUCC_HO
004049 MSC_O_TCH_TCH
RF CHANNEL RELEASE
RF CHANNEL RELEASE ACK
Abis AoTDM
HANDOVER COMMAND
HANDOVER COMPLETE
HANDOVER COMPLETE
Um
CLEAR COMPLETED
004043 MSC_I_TCH_TCH
004246 BSS_INT_HO_SRC_SUCC
256 DN9813636
4 Handover Measurement
Id:0900d805808d0166Confidential
Signalling charts of Handover Measurement
Related topics4 Handover Measurement
Counters of Handover Measurement
DN9813636 257
4 Handover Measurement Signalling charts of Dual Transfer Mode
Id:0900d8058061b21dConfidential
4 Signalling charts of Dual Transfer ModeThe following figures show the signalling charts of Dual Transfer Mode:
Figure 66 MO DTM call establishment
MS BTS BSC MSC
MEASUREMENT REPORT
CHANNEL ACTIVATION
CHANNEL ACTIVATION ACK
SABM
ESTABLISH INDICATION
UA
ASSIGNMENT COMPLETE
RR
HANDOVER PERFORMED
RF CHANNEL RELEASE
RF CHANNEL RELEASE ACK
106000 MO_DTM_CALL_REQUESTS_INI
DTM REQUEST
MEASUREMENT RESULT
PHYSICAL CONTEXT REQUEST
PHYSICAL CONTEXT CONFIRM
DTM ASSIGNMENT COMMAND
105016 DTM_REQ_1_UL_PS_TSL or105017 DTM_REQ_2_UL_PS_TSL
105009 DTM_ALLOCATIONS_INITIAL
105015 PEAK_DTM_CS_SIMULTAN
105021 DTM_ALLOC_1_UL_PS_TSL or105022 DTM_ALLOC_2_UL_PS_TSL
Start T3107
051189 INTRA_DTM_MO_CS_TO_PS
106018 DTM_ASSIGN_COMMANDS
071038 REPORTING_TIME_BY_DTM_MS
071037 TCH_RESERV_BY_DTM_MS
MS in dedicated mode
PS data transfer in dual transfer mode
Stop T3107
DUMMY RLC BLOCK
UL RLC BLOCK
105026 UL_DTM_TBF_ESTABLISHMENTS
258 DN9813636
4 Handover Measurement
Id:0900d8058061b21dConfidential
Signalling charts of Dual Transfer Mode
Figure 67 MT DTM call establishment
MS BTS BSC MSC
SABM
UA
RR
105000 MT_DTM_CALL_REQUESTS_INI
SGSN
LLC PDU
MEASUREMENTREPORT MEASUREMENT RESULT
PHYSICAL CONTEXT REQUEST
CHANNEL ACTIVATION ACK
ASSIGNMENT COMPLETE
HANDOVER PERFORMED
RF CHANNEL RELEASE ACK
DTM ASSIGNMENT COMMAND
CHANNEL ACTIVATION
RF CHANNEL RELEASE
PHYSICAL CONTEXT CONFIRM
ESTABLISH INDICATION
105009 DTM_ALLOCATIONS_INITIAL
105023 DTM_ALLOC_1_DL_PS_TSL or105024 DTM_ALLOC_2_DL_PS_TSL
106018 DTM_ASSIGN_COMMANDS
051190 INTRA_DTM_MT_CS_TO_PS
071038 REPORTING_TIME_BY_DTM_MS
071037 TCH_RESERV_BY_DTM_MS
105018 DTM_REQ_1_DL_PS_TSL or105019 DTM_REQ_2_DL_PS_TSL
MS in dedicated mode
PS data transfer in dual transfer mode
105027 DL_DTM_TBF_ESTABLISHMENTS
(EGPRS) PACKET DOWNLINK ACK/NACK
DL RLC BLOCK
105015 PEAK_DTM_CS_SIMULTAN
DN9813636 259
4 Handover Measurement Signalling charts of Dual Transfer Mode
Id:0900d8058061b21dConfidential
Figure 68 DTM call reallocation; too high CS connection interference
MS BTS BSC MSC
MEASUREMENT REPORT
CHANNEL ACTIVATION
CHANNEL ACTIVATION ACK
DTM ASSIGNMENT COMMAND
SABM
ESTABLISH INDICATION
UA
ASSIGNMENT COMPLETE
RRHANDOVER PERFORMED
RF CHANNEL RELEASE
RF CHANNEL RELEASE ACK
071038 REPORTING_TIME_BY_DTM_MS
MEASUREMENT RESULT
CS connection controldetects too high CSconnection interference
PHYSICAL CONTEXT REQUEST
PHYSICAL CONTEXT CONFIRM
071037 TCH_RESERV_BY_DTM_MS
106018 DTM_ASSIGN_COMMANDS
106006 DTM_REALLO_CS_REQUESTS
MS has a DTM allocation with one UL PS TSL allocation
DTM call continues on the new resources
105010 DTM_REALLOCATIONS
105016 DTM_REQ_1_UL_PS_TSL or105017 DTM_REQ_2_UL_PS_TSL
105021 DTM_ALLOC_1_UL_PS_TSL or105022 DTM_ALLOC_2_UL_PS_TSL
260 DN9813636
4 Handover Measurement
Id:0900d8058061b21dConfidential
Signalling charts of Dual Transfer Mode
Figure 69 DTM call reallocation; inadequate PS connection quality
MS BTS BSC MSC
CHANNEL ACTIVATION
CHANNEL ACTIVATION ACK
SABMESTABLISH INDICATION
UA
ASSIGNMENT COMPLETE
RR
HANDOVER PERFORMED
RF CHANNEL RELEASE
RF CHANNEL RELEASE ACK
MEASUREMENT REPORT
071038 REPORTING_TIME_BY_DTM_MS
PS quality control detectsinadequate quality
MEASUREMENT RESULT
PHYSICAL CONTEXT CONFIRM
PHYSICAL CONTEXT REQUEST
DTM ASSIGNMENT COMMAND
071037 TCH_RESERV_BY_DTM_MS
051191 INTRA_DTM_MT_PS_TO_PS
106018 DTM_ASSIGN_COMMANDS
105010 DTM_REALLOCATIONS
105005 DTM_REALLO_REQ_PS_QUAL
MS has a DTM allocation with one DL PS TSL allocation
DTM call continues on the new resources
105018 DTM_REQ_1_DL_PS_TSL or105019 DTM_REQ_2_DL_PS_TSL
105023 DTM_ALLOC_1_DL_PS_TSL or105024 DTM_ALLOC_1_DL_PS_TSL
DN9813636 261
4 Handover Measurement Signalling charts of Dual Transfer Mode
Id:0900d8058061b21dConfidential
Figure 70 DTM call; internal inter-cell handover; CS connection power budget
BTS1 BTS2 BSC MSC
CHANNEL ACTIVATION
HANDOVER ACCESS
MS
PHYSICAL INFO
SABM
UA
RR
DTM INFORMATION
MS has a DTM allocation
RF CHANNEL RELEASE ACK
CHANNEL ACTIVATION ACK
MEASUREMENT REPORT
MEASUREMENT RESULT
CS connection control startsa power budget handover
HANDOVER COMMAND
HANDOVER DETECTION
ESTABLISH INDICATION
HANDOVER COMPLETE
HANDOVER PERFORMED
RF CHANNEL RELEASE
CS connection continues in the CS territory of the target cell.The DTM call is then re-established in the target cell.
105011 DTM_DURATION_SUM_FR
004199 DTM_CALL_HO_SUCC_TO_DTM_CELL
072202 DL_TBF_RELEASES_DUE_DTM
072201 UL_TBF_RELEASES_DUE_DTM
004198 DTM_CALL_HO_ATT_TO_DTM_CELL
106013 DTM_RELEASES_DUE_CS_HO
071037 TCH_RESERV_BY_DTM_MS
071038 REPORTING_TIME_BY_DTM_MS
HANDOVER COMPLETE
004194 DTM_CALL_HO_FROM_DTM_CELL
262 DN9813636
4 Handover Measurement
Id:0900d8058061b21dConfidential
Signalling charts of Dual Transfer Mode
Figure 71 DTM call; internal inter-cell handover; lack of resources in the PS territory
BTS1 BTS2 BSC MSC
HANDOVER ACCESS
MS
PHYSICAL INFO
SABM
UA
RR
DTM INFORMATION
CHANNEL ACTIVATION ACK
RF CHANNEL RELEASE ACK
HANDOVER PERFORMED
CHANNEL ACTIVATION
HANDOVER COMMAND
HANDOVER DETECTION
ESTABLISH INDICATION
HANDOVER COMPLETE
HANDOVER COMPLETE
RF CHANNEL RELEASE
004194 DTM_CALL_HO_FROM_DTM_CELL
004199 DTM_CALL_HO_SUCC_TO_DTM_CELL
004198 DTM_CALL_HO_ATT_TO_DTM_CELL
004195DTM_HO_DUE_LACK_OF_RESOURCES
072201 UL_TBF_RELEASES_DUE_DTM
072202 DL_TBF_RELEASES_DUE_DTM
105011 DTM_DURATION_SUM_FR
071038 REPORTING_TIME_BY_DTM_MS
071037 TCH_RESERV_BY_DTM_MS
106013 DTM_RELEASES_DUE_CS_HO
No free resources in the PS territory
CS connection continues in the CS territory of the target cell.The DTM call is then re-established in the target cell.
DN9813636 263
4 Handover Measurement Signalling charts of Dual Transfer Mode
Id:0900d8058061b21dConfidential
Figure 72 DTM call; external handover, source BSC
MS BTS BSC MSC
RF CHANNEL RELEASE
RF CHANNEL RELEASE ACK
MEASUREMENT RESULT
MEASUREMENT REPORT
HANDOVER REQUIRED
HANDOVER COMMAND
CLEAR COMMAND
CLEAR COMPLETE
004199 DTM_CALL_HO_SUCC_TO_DTM_CELL
071038 REPORTING_TIME_BY_DTM_MS
071037 TCH_RESERV_BY_DTM_MS
106013 DTM_RELEASES_DUE_CS_HO
072202 DL_TBF_RELEASES_DUE_DTM
105011 DTM_DURATION_SUM_FR
072201 UL_TBF_RELEASES_DUE_DTM
004198 DTM_CALL_HO_ATT_TO_DTM_CELL
MS has a DTM allocation
Channel reservation and activation in the target BSC
HO signalling in the target BSC
CS connection continues in the CS territory of the target cell.The DTM call is then re-established in the target cell.
264 DN9813636
4 Handover Measurement
Id:0900d8058061b21dConfidential
Signalling charts of Dual Transfer Mode
Figure 73 DTM call; external handover, target BSC
MS BTS BSC MSC
CHANNEL ACTIVATION
CHANNEL ACTIVATION ACK
HANDOVER ACCESS
HANDOVER DETECTION
PHYSICAL INFO
SABM
ESTABLISH INDICATION
UA
HANDOVER COMPLETE
RR
DTM INFORMATION
HANDOVER REQUEST
HANDOVER REQUESTACKNOWLEDGE
External handover decision in the source BSC
HO signalling in the source BSC, the MSC sends a HO command
Old resources released in the source BSC
The DTM call is then re-established in the target cell.CS connection continues in the CS territory of the target cell.
DN9813636 265
4 Handover Measurement Signalling charts of Dual Transfer Mode
Id:0900d8058061b21dConfidential
Figure 74 DTM call release initiated by the MS
MS BTS BSC MSC
DISCONNECT
RELEASE
RELEASE COMPLETE
CLEAR COMMAND
106012 DTM_RELEASES_DUE_CS_RELEASE
CLEAR COMPLETE
CHANNEL RELEASE
DEACTIVATE SACCH
UA
DISC
RELEASE INDICATION
RF CHANNEL RELEASE
RF CHANNEL RELEASE ACK
MS has a DTM allocation with ongoing UL and/or DL TBFs
072201 UL_TBF_RELEASES_DUE_DTM
072202 DL_TBF_RELEASES_DUE_DTM
105011 DTM_DURATION_SUM_FR
071037 TCH_RESERV_BY_DTM_MS
071038 REPORTING_TIME_BY_DTM_MS
START TIMER T3111
TIMER T3111 EXPIRES
266 DN9813636
4 Handover Measurement
Id:0900d8058061b21dConfidential
Signalling charts of Dual Transfer Mode
Figure 75 DTM call release; packet data transfer end
MS BTS BSC MSC
SABM
UA
106011 DTM_RELEASES_DUE_PS_RELEASE
SGSN
Last LLC PDU
RR
DL Data Frame (final block), polling
UNACK MODE: Packet Control Ack
ASSIGNMENT COMMAND
PHYSICAL CONTEXT REQUEST
ASSIGNMENT COMPLETE
HANDOVER PERFORMED
RF CHANNEL RELEASE ACK
ACK MODE: (EGPRS) Packet DL Ack /Nack (final ack)
PHYSICAL CONTEXT CONFIRM
CHANNEL ACTIVATION ACK
CHANNEL ACTIVATION
RF CHANNEL RELEASE
051192 INTRA_DTM_PS_TO_CS
105011 DTM_DURATION_SUM_FR
071038 REPORTING_TIME_BY_DTM_MS
071037 TCH_RESERV_BY_DTM_MS
CS connection continues in the CS territory
MS has a DTM allocation with ongoing UL and/or DL TBFs
RR
ESTABLISH INDICATION
DN9813636 267
4 Handover Measurement Signalling charts of Dual Transfer Mode
Id:0900d8058061b21dConfidential
Figure 76 DTM REQUEST rejected when IMSI data not available
MS BTS BSC MSC
CHANNEL REQUEST
CHANNEL ACTIVATION
CHANNEL ACTIVATION ACK
IMMEDIATE ASSIGNMENT
SABMESTABLISH INDICATION
UA
CLASSMARK CHANGE
CHANNEL ACTIVATION
CHANNEL ACTIVATION ACK
ASSIGNMENT COMMAND
SABMESTABLISH INDICATION
UA
ASSIGNMENT COMPLETE
DTM REQUEST
RF CHANNEL RELEASE
RF CHANNEL RELEASE ACK
CONNECT ACK
CONNECT
DTM REJECT
106002 MO_DTM_CALL_REJECTS_INI
GPRS INFORMATION
SETUP
CALL PROCEEDING
ALERT
RR
SGSN
LLC PDU
CM SERVICE REQUEST
CLASSMARK UPDATE
COMMON ID (not received)
106000 MO_DTM_CALL_REQUESTS_INI
106017 DTM_IMSI_NOT_AVAILABLE
PHYSICAL CONTEXT REQUEST
PHYSICAL CONTEXT CONFIRM
Authentication, identity request and ciphering
MS continues in dedicated mode.
ASSIGNMENT REQUEST
268 DN9813636
4 Handover Measurement
Id:0900d8058061b21dConfidential
Signalling charts of Dual Transfer Mode
Figure 77 Unsuccessful MO DTM; activation of a CS TCH in the PS territory fails, timer expires while waiting for CHANNEL ACTIVATION ACK
MS BTS BSC
MEASUREMENT REPORT
CHANNEL ACTIVATION
PHYSICAL CONTEXT REQUEST
PHYSICAL CONTEXT CONFIRM
106000 MO_DTM_CALL_REQUESTS_INI
CHANNEL ACTIVATION ACK (not received)
Start T9103
T9103 expires
RF CHANNEL RELEASE
RF CHANNEL RELEASE ACK
DTM REQUEST
MEASUREMENT RESULT
105016 DTM_REQ_1_UL_PS_TSL or105017 DTM_REQ_2_UL_PS_TSL
105009 DTM_ALLOCATIONS_INITIAL
105021 DTM_ALLOC_1_UL_PS_TSL or105022 DTM_ALLOC_2_UL_PS_TSL
106002 MO_DTM_CALL_REJECTS_INI
CS call continues on the old TCH channel
MS in dedicated mode
DN9813636 269
4 Handover Measurement Signalling charts of Dual Transfer Mode
Id:0900d8058061b21dConfidential
Figure 78 Unsuccessful MT DTM; activation of a CS TCH in the PS territory fails, timer expires while waiting for CHANNEL ACTIVATION ACK
SGSNMS BTS BSC
MEASUREMENT REPORT
CHANNEL ACTIVATION
Start T9103
T9103 expires
RF CHANNEL RELEASE
RF CHANNEL RELEASE ACK
105000 MT_DTM_CALL_REQUESTS_INI
DL LLC PDU
MEASUREMENT RESULT
PHYSICAL CONTEXT REQUEST
CHANNEL ACTIVATION ACK (not received)
105009 DTM_ALLOCATIONS_INITIAL
105019 DTM_REQ_2_DL_PS_TSL105018 DTM_REQ_1_DL_PS_TSL or
105023 DTM_ALLOC_1_DL_PS_TSL or105024 DTM_ALLOC_2_DL_PS_TSL
105002 MT_DTM_CALL_REJECTS_INI
PHYSICAL CONTEXT CONFIRM
MS in dedicated mode
CS call continues on the old TCH channel
270 DN9813636
4 Handover Measurement
Id:0900d8058061b21dConfidential
Signalling charts of Dual Transfer Mode
Figure 79 Unsuccessful MT DTM; DTM ASSIGNMENT FAILURE received
MS BTS BSC
SABM
ESTABLISH INDICATION
UA
DTM ASSIGNMENT FAILURE
RF CHANNEL RELEASE
RF CHANNEL RELEASE ACK
RR
DTM ASSIGNMENT COMMAND
106008 DTM_ASSIGN_FAILURES_INI
106018 DTM_ASSIGN_COMMANDS
CS call continues on the old TCH channel
MT DTM call establishment started; see MT DTM scenario untilDTM ASSIGNMENT COMMAND in figure MT DTM call establishment
105011 DTM_DURATION_SUM_FR
105015 PEAK_DTM_CS_SIMULTAN
DN9813636 271
4 Handover Measurement Signalling charts of Dual Transfer Mode
Id:0900d8058061b21dConfidential
Figure 80 Timer T3107 expires while waiting for ASSIGNMENT COMPLETE
MS BTS BSC MSC
SABM
ESTABLISH INDICATION
RF CHANNEL RELEASE
RF CHANNEL RELEASE ACK
RF CHANNEL RELEASE
RF CHANNEL RELEASE ACK
106010 MS_LOST_DURING_ASSIGNMENT
CLEAR REQUEST
CLEAR COMMAND
CLEAR COMPLETE
DTM ASSIGNMENT COMMAND
UA
ASSIGNMENT COMPLETE (not received)
T3107 expires
106018 DTM_ASSIGN_COMMANDS
071038 REPORTING_TIME_BY_DTM_MS
071037 TCH_RESERV_BY_DTM_MS
Release of the new TCH channel
Release of the old TCH channel
MO or MT DTM call establishment started; see MT DTM scenario untilDTM ASSIGNMENT COMMAND in figure MT DTM call establishment
Start T3107
105011 DTM_DURATION_SUM_FR
105015 PEAK_DTM_CS_SIMULTAN
272 DN9813636
4 Handover Measurement
Id:0900d8058061b21dConfidential
Signalling charts of Dual Transfer Mode
Figure 81 DTM call reallocation failure; DTM ASSIGNMENT FAILURE received
MS BTS BSC
PHYSICAL CONTEXT REQUEST
PHYSICAL CONTEXT CONFIRM
MEASUREMENT REPORT
CHANNEL ACTIVATION
CHANNEL ACTIVATION ACK
RR
106009 DTM_ASSIGN_FAILURES_REALLO
RF CHANNEL RELEASE
RF CHANNEL RELEASE ACK
105005 DTM_REALLO_REQ_PS_QUAL
PS quality control detectsinadequate quality
MEASUREMENT RESULT
DTM ASSIGNMENT COMMAND
DTM ASSIGNMENT FAILURE
105010 DTM_REALLOCATIONS
071038 REPORTING_TIME_BY_DTM_MS
071037 TCH_RESERV_BY_DTM_MS
DTM call continues on the old resources
MS has a DTM allocation with ongoing UL and/or DL TBFs
106018 DTM_ASSIGN_COMMANDS
DN9813636 273
4 Handover Measurement Signalling charts of Dual Transfer Mode
Id:0900d8058061b21dConfidential
Figure 82 DTM CS connection drops after ASSIGNMENT COMPLETE; CONNEC-TION FAILURE received
MS BTS BSC MSC
HANDOVER PERFORMED
DISC
CLEAR COMMAND
CHANNEL RELEASE
DEACTIVATE SACCH
UA
RF CHANNEL RELEASE ACK
RF CHANNEL RELEASE
RELEASE INDICATION
CLEAR COMPLETE
CONNECTION FAILURECLEAR REQUEST
001234 DROP_DTM_TCH_ASCMPL_RFCH_REL
Radio Link Failure detected
ASSIGNMENT COMPLETE
MS has a DTM allocation with ongoing UL and/or DL TBFs;for example, see figure MO DTM call establishment
001233 DROP_AFTER_DTM_TCH_ASSIGN
071037 TCH_RESERV_BY_DTM_MS
071038 REPORTING_TIME_BY_DTM_MS
105011 DTM_DURATION_SUM_FR
072202 DL_TBF_RELEASES_DUE_DTM072201 UL_TBF_RELEASES_DUE_DTM or
RF CHANNEL RELEASE ACK
RF CHANNEL RELEASE
106014 DTM_RELEASES_DUE_OTHER
051189 INTRA_DTM_MO_CS_TO_PS
071038 REPORTING_TIME_BY_DTM_MS
071037 TCH_RESERV_BY_DTM_MS
274 DN9813636
4 Handover Measurement
Id:0900d8058061b21dConfidential
Signalling charts of Dual Transfer Mode
Figure 83 DTM CS connection drops after ASSIGNMENT COMPLETE; RELEASE INDICATION not received
MS BTS BSC MSC
RELEASE
RELEASE COMPLETE
CLEAR COMMAND
CHANNEL RELEASE
DEACTIVATE SACCH SCCP RELEASE COMPLETE
SCCP RELEASE
DISCONNECT
RF CHANNEL RELEASE ACK
RF CHANNEL RELEASE
001234 DROP_DTM_TCH_ASCMPL_RFCH_REL
DISC (not received)
RELEASE INDICATION (not received)
T3109 expires
Start T3109
MS has a DTM allocation with ongoing UL and/or DL TBFs; for example, see figureMO DTM call establishment
105011 DTM_DURATION_SUM_FR
072202 DL_TBF_RELEASES_DUE_DTM
072201 UL_TBF_RELEASES_DUE_DTM
CLEAR COMPLETE
106012 DTM_RELEASES_DUE_CS_RELEASE
071038 REPORTING_TIME_BY_DTM_MS
071037 TCH_RESERV_BY_DTM_MS
DN9813636 275
4 Handover Measurement Signalling charts of Dual Transfer Mode
Id:0900d8058061b21dConfidential
Figure 84 Unsuccessful DTM call reallocation; timer T3107 expires while waiting for ASSIGNMENT COMPLETE
MS BTS BSC MSC
CHANNEL ACTIVATION
CHANNEL ACTIVATION ACK
SABM
ESTABLISH INDICATION
MEASUREMENT REPORT
106018 DTM_ASSIGN_COMMANDS
T3107 expires
RF CHANNEL RELEASE
RF CHANNEL RELEASE ACK
RF CHANNEL RELEASE
RF CHANNEL RELEASE ACK
CLEAR REQUEST
CLEAR COMMAND
CLEAR COMPLETE
106024 MS_LOST_DURING_REALLOCATION
071037 TCH_RESERV_BY_DTM_MS
071038 REPORTING_TIME_BY_DTM_MS
105011 DTM_DURATION_SUM_FR
T3111 expires
PS quality control detects inadequate quality
105010 DTM_REALLOCATIONS
105018 DTM_REQ_1_DL_PS_TSL or
105019 DTM_REQ_2_DL_PS_TSL
105023 DTM_ALLOC_1_DL_PS_TSL or
105024 DTM_ALLOC_2_DL_PS_TSL
001233 DROP_AFTER_DTM_TCH_ASSIGN
001234 DROP_DTM_TCH_ASCMPL_RFCH_REL
Release of the old TCH channel
Release of the new TCH channel
MS has a DTM allocation with one DL PS TSL allocation
105005 DTM_REALLO_REQ_PS_QUAL
DTM ASSIGNMENT COMMAND DTM ASSIGNMENT COMMAND
PHYSICAL CONTEXT REQUEST
MEASUREMENT RESULT
PHYSICAL CONTEXT CONFIRM
ASSIGNMENT COMPLETE (not received)
276 DN9813636
4 Handover Measurement
Id:0900d8058061b21dConfidential
Signalling charts of Dual Transfer Mode
Figure 85 DTM TBF assignment failure; UL RLC block not received
MS BTS BSC MSC
CHANNEL ACTIVATION
SABMESTABLISH INDICATION
UL RLC block (not received)
106018 DTM_ASSIGN_COMMANDS
106000 MO_DTM_CALL_REQUESTS_INI
MS requests a UL TBF
dummy RLC block
Expiry of DTM_CALL_ASSIGN_TIMER
105008 DTM TBF ASSIGNMENT FAILURES
105011 DTM_DURATION_SUM_FR
ASSIGNMENT COMMAND
ESTABLISH INDICATIONUA
ASSIGNMENT COMPLETE
HANDOVER PERFORMED
RF CHANNEL RELEASE
051198 INTRA_DTM_PS_TO_CS
071037 TCH_RESERV_BY_DTM_MS
071038 REPORTING_TIME_BY_DTM_MS
RR
106011 DTM_RELEASES_DUE_PS_RELEASE
105009 DTM_ALLOCATIONS_INITIAL
105016 DTM_REQ_1_UL_PS_TSL or
105017 DTM_REQ_2_UL_PS_TSL
105021 DTM_ALLOC_1_UL_PS_TSL or
105022 DTM_ALLOC_2_UL_PS_TSL
105015 PEAK_DTM_CS_SIMULTANUA
MEASUREMENT RESULT
ASSIGNMENT COMMAND
dummy RLC block
ASSIGNMENT COMPLETEASSIGNMENT COMPLETE
CS connection continues in the CS territory
DTM ASSIGNMENT COMMAND DTM ASSIGNMENT COMMAND
PHYSICAL CONTEXT REQUEST
PHYSICAL CONTEXT CONFIRM
CHANNEL ACTIVATION ACK
PHYSICAL CONTEXT REQUEST
PHYSICAL CONTEXT CONFIRM
CHANNEL ACTIVATION ACK
CHANNEL ACTIVATION
RF CHANNEL RELEASE ACK
MS in dedicated mode, MO call
DTM REQUEST DTM REQUEST
MEASUREMENT REPORT
RR
SABM
ASSIGNMENT COMPLETE
Start DTM_CALL_ASSIGN_TIMER
DN9813636 277
4 Handover Measurement Signalling charts of Dual Transfer Mode
Id:0900d8058061b21dConfidential
Figure 86 DTM-capable MS paging
Related topics
• 1 Traffic Measurement • Counters of Traffic Measurement
• 4 Handover Measurement • Counters of Handover Measurement
• 51 BSC Level Clear Code (PM) Measurement • Counters of 51 BSC Level Clear Code (PM) Measurement
• 71 MS Capability Indication Measurement • Counters of MS Capability Indication Measurement
• 72 Packet Control Unit Measurement • Counters of Packet Control Unit Measurement
• 105 PS DTM Measurement • Counters of PS DTM Measurement
• 106 CS DTM Measurement • Counters of CS DTM Measurement