HUAWEI GSM BSS Network KPI (Paging Success Rate) Optimization Manual

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GSM BSS Network KPI (Paging Success Rate) Optimization Manual

INTERNAL

Product Name G3BSC Product Version

Confidentiality level INTERNAL Total 28 pages

GSM BSS Network KPI (Paging Success Rate) Optimization Manual(For internal use only) Prepared by Reviewed by Reviewed by Approved by Yang Chunjie (00119951), WCDMA&GSM Network Performance Research Dept. Date Date Date Date 2008-9-2

Huawei Technologies Co., Ltd. All rights reserved

2012-7-20

Huawei Confidential

Page 1 of 28

GSM BSS Network KPI (Paging Success Rate) Optimization Manual

INTERNAL

Contents1 Definition of the Paging Success Rate ...................................................................................... 71.1 Definition ......................................................................................................................................................... 7 1.2 Recommended Formula ................................................................................................................................... 7 1.3 Signaling Procedure and Measurement Point ................................................................................................... 8

2 Influencing Factors ....................................................................................................................... 92.1 Hardware Fault ................................................................................................................................................. 9 2.2 Transmission Problem ...................................................................................................................................... 9 2.3 Parameter Setting Problem ............................................................................................................................... 9 2.4 Interference Problem ...................................................................................................................................... 10 2.5 Coverage Problem .......................................................................................................................................... 10 2.6 Uplink and Downlink Balance Problem ......................................................................................................... 11

3 Analysis Procedure for the Paging Success Rate and Optimization Method ................. 123.1 Analysis Procedure ......................................................................................................................................... 12 3.2 Problem Location of the Paging Success Rate and Optimization Method ..................................................... 13 3.2.1 Hardware and Transmission Problems .................................................................................................. 14 3.2.2 SDCCHs Occupied Due to Paging Overload and Heavy Burst Traffic................................................. 14 3.2.3 Parameter Configuration ....................................................................................................................... 15 3.2.4 Interference ........................................................................................................................................... 20 3.2.5 Coverage ............................................................................................................................................... 20 3.2.6 Balance Between Uplink and Downlink ............................................................................................... 21

4 Test Methods ................................................................................................................................ 22 5 Cases for Optimization of the Paging Success Rate ............................................................. 235.1 Case 1: Paging Success Rate Drops Due to a Hardware Fault ....................................................................... 23 5.2 Case 2: Paging Success Rate Drops Due to a Transmission Fault ................................................................. 23 5.3 Paging Success Rate Drops Due to Improper Parameter Configuration ........................................................ 24 5.3.1 Case 3: Paging Success Rate Drops When the Pre-paging Function Is Enabled .................................. 24 5.3.2 Case 4: Paging Success Rate Drops When BS-PA-MFRAMS Is Set Improperly ................................. 24 5.3.3 Case 5: MS Cannot Respond to a Paging Message When the Number of Pagings on the N Side Is Set Improperly ..................................................................................................................................................... 25 5.3.4 Case 6: BSC Paging Is Abnormal When the LAC Is Configured Improperly for the BSC .................. 25 5.3.5 Case 7: Paging Success Rate Increases After the A-interface Collaboration Paging Function Is Enabled ....................................................................................................................................................................... 26

2012-7-20

Huawei Confidential

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GSM BSS Network KPI (Paging Success Rate) Optimization Manual

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5.4 Case 8: Paging Success Rate Drops Due to Poor Coverage ........................................................................... 26

6 Information Feedback ................................................................................................................ 28

2012-7-20

Huawei Confidential

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GSM BSS Network KPI (Paging Success Rate) Optimization Manual

INTERNAL

FiguresFigure 1-1 Intra-BSS Paging Procedure ................................................................................................................ 8

2012-7-20

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GSM BSS Network KPI (Paging Success Rate) Optimization Manual

INTERNAL

Revision RecordDate 2008-09-02 Revision version V1.0 Change Description Draft completed Author Yang Chunjie

ReferencesSN Document Author Date

1 2

G-Guide to Eliminating Interference-20050311-A-1.0 GSM BSS Network KPI (Paging Success Rate) Baseline Specification

Chen Baolin Wu Zhen

2005-3-11 2007-8-14

2012-7-20

Huawei Confidential

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GSM BSS Network KPI (Paging Success Rate) Optimization Manual

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GSM BSS Network KPI (Paging Success Rate) Optimization ManualKeyword: paging success rate Abstract: This document provides the method for optimizing the paging success rate. Acronyms and abbreviations: Acronym and Abbreviation MSC BSC BTS HLR MS IMSI Full Spelling Mobile Switching Center Base Station Controller Base Transceiver Station Home Location Register Mobile Station International Mobile Station Identification Code

TMSI

Temporary Mobile Station Identity

2012-7-20

Huawei Confidential

Page 6 of 28

GSM BSS Network KPI (Paging Success Rate) Optimization Manual

INTERNAL

1

Definition of the Paging Success Rate

1.1 DefinitionThe paging success rate is the ratio of the paging responses received by the system to the initial paging requests sent by the system. It indicates the paging capability of the system. The paging consists of the voice call paging, short message paging, PSI paging, and Gs paging. For the area that does not enable the Gs interface, the paging consists of only the voice call paging, short message paging, and PSI paging. The wireless services are performed on the basis of paging. A high paging success rate can improve multiple service KPIs in the case of certain hardware capacity. A high paging success rate helps to improve user satisfaction and to promote the brands of the operators. The paging success rate is one of important KPIs related to the network access. It is also one of important KPIs for the operators.

1.2

Recommended FormulaThe paging success rate can be obtained from the traffic statistics and drive test (DT). If you want to obtain the paging success rate from the traffic statistics, the paging success rate must be obtained on the core network (CN) side. The measurement object is location area. The CN decides whether the paging success rate is qualified or not. The recommended formula used for calculating this KPI is as follows: Number of paging request responses/Number of paging requests The specific formulas are as follows: Paging success rate (all the pagings) = (Number of first paging responses of common calls on the A interface + Number of repeated paging responses of common calls on the A interface + Number of first paging responses of short messages on the A interface + Number of repeated paging responses of short messages on the A interface + Number of first paging responses of the Gs on the A interface + Number of repeated paging responses of the Gs on the A interface + Number of first paging responses of the PSI on the A interface + Number of repeated paging responses of the PSI on the A interface + Number of first paging responses on the Gs interface + Number of repeated paging responses on the Gs interface)/(Number of first pagings of common calls on the A interface + Number of first pagings of short messages on the A interface + Number of first pagings of the Gs on the A interface + Number of first pagings of the PSI on the A interface + Number of first pagings on the Gs interface)1 Paging success rate (MTC call access measurement) = (Number of first paging responses of common calls on the A interface + Number of repeated paging responses of common calls on the A interface)/Number of first pagings of common calls on the A interface 2 Paging success rate (main servic