Huawei parameter strategy v1.4 1st dec

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Parameter related to Traffic Share Solution (Traffic Balancing) , Idle Mode & Call Control, handover, 2G/3G interoperability, power control

Text of Huawei parameter strategy v1.4 1st dec

  • 1. HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Security Level: www.huawei.com Huawei Parameter Strategy
  • 2. HUAWEITECHNOLOGIES CO., LTD. Huawei Confidential www.huawei.com Contents Traffic Share Solution Idle Mode & Call Control Handover 2G/3G Interoperability Power Control
  • 3. HUAWEITECHNOLOGIES CO., LTD. Huawei Confidential Traffic Share Solution Recommended solutions for Traffic Balancing I. In case of GSM900 and DCS1800 co-location, the GSM900 has strong signal strength but we can use the idle parameter setting and handover to control the traffic and achieve the balanced traffic between GSM900 and DCS1800 II. In case of 2G and 3G co-location, we can use the idle parameter setting and handover to control the traffic and achieve the balanced traffic between 2G and 3G a. Set proper cell selection and reselection parameters b. Utilize proper cell layer settings and other handover parameters c. Control idle mode MS behavior, optimize handover settings to achieve proper traffic load sharing d. other
  • 4. HUAWEITECHNOLOGIES CO., LTD. Huawei Confidential Hierarchical strategy for GSM900 and GSM1800 The layer of GSM 1800 cell is higher than the layer of GSM 900 cell. In idle mode, the MS stay in the GSM 900 cell B by setting the cell selecting or cell reselecting parameters. When the DL signal level is good enough to reach the threshold, the MS is triggered the Layer HO to GSM 1800 cell B. -1 Because the moving of Ms, the UL/DL signal level become worse. When UL/DL RxLevel is lower than the threshold, the MS is triggered Edge HO to GSM 900 cell B. -2 In oder to avoiding congestion of GSM 1800 cell, the Load HO can be used to share some traffic to GSM 900 cell. Cell B GSM 900 Inter-layer HO threshold +64- Inter-layer HO hysteresis Edge HO Threshold Cell A GSM 1800 Cell select/ cell reselect Layer HO Edge HO/Load HO The MS in this zone are difficult to be triggered handover from GSM 1800 cell to GSM 900 cell. Traffic Share Solution
  • 5. HUAWEITECHNOLOGIES CO., LTD. Huawei Confidential Strategy for 2G/3G Interoperability For the areas covered by both the GSM network and the UMTS network,2G/3G interoperability can be performed to achieve traffic balance between the GSM and UMTS. I.Only suggest to active the cell reselection from 2G to 3G. II.Both cell reselection and handover are suggested from 3G to 2G. a.Cell reselection from 3G to 2G only when the UE leave 3G coverage. b.UE will trigger cell reselection from 2G to 3G once it go back to 3G coverage. 2G Coverage 3G/2G Coverage Traffic Share Solution
  • 6. HUAWEITECHNOLOGIES CO., LTD. Huawei Confidential www.huawei.com Contents Traffic Share Solution Idle Mode & Call Control Handover 2G/3G Interoperability Power Control
  • 7. HUAWEITECHNOLOGIES CO., LTD. Huawei Confidential Idle Mode Strategy: More subscribers stay in DCS in Idle mode Layer Priority: ID=OD>MD>MG GSM1800 GSM1800GSM1800 GSM900 Cell Micro Cell Layer 3 Layer 2 GSM 900 GSM 900 GSM 900 GSM1800 GSM1800 GSM1800 GSM1800 GSM1800 Cell Layer 1 In-Building Cell
  • 8. HUAWEITECHNOLOGIES CO., LTD. Huawei Confidential Parameter suggested PARAMETER PROPOSED VALUES Abbreviated Name Parameter Name MG MD ID OD MAX TA(bit period(1 bit=0.55km)) Actual distance between MS & BTS 62 33 2 Repeater site value TBD 4 Repeater site value TBD RXLEV_ACCESS_MIN RxLevel Acces Min Rural,5 Suburban 5 Others 8 (follow existing value) 15 (follow existing value) 15 (follow existing value) 20 Radio Link Timeout (FR & EFR) RLT 32 28 36 28 Radio Link Timeout (AMR FR) AFRDSBLCNT 48 48 48 48 Layer of the Cell Layer of the Cell 3 2 1 1 Cell Priority Cell Priority 1 1 1 1 CRO Cell Reselection Offset 0 (0dB) 12 (24dB) 18(36dB) 15 (30dB) TO Temporary Offset 0 (0dB) 0 (0dB) 4 (40dB) 4 (40dB) PT Penalty Time 0 (20 second) 0 (20 second) 1 (40 second) 0 (20 second) CRH Cell Reselection Hysteresis 14 dB 14 dB 14 dB 14 dB BS_AG_BLKS_RES Number of CCCH blocks reserved for the AGCH 1 1 1 1 BS-PA-MFRAMS Number of multi-frames in a cycle on the paging channel 2 Multiframe Period 2 Multiframe Period 2 Multiframe Period 2 Multiframe Period FMSMAXOPCC MS_TXPWR_MAX_CCH 5 0 0 0 Idle Mode & Call Control
  • 9. HUAWEITECHNOLOGIES CO., LTD. Huawei Confidential www.huawei.com Contents Traffic Share Solution Idle Mode & Call Control Handover 2G/3G Interoperability Power Control
  • 10. HUAWEITECHNOLOGIES CO., LTD. Huawei Confidential Handover Huawei handover algorithm introduction Emergency HO MS Goes into New Dedicated Mode MS Goes into Dedicated Mode Measurement Report processing1 Handover Judgment2 Handover Implementation if necessary 3 TA HO Interference HO Bad Quality HO Load HO Edge HO Layer HO PBGT HO AMR HO No DL MR HO Penalty Processing Ranking Processing Normal HO
  • 11. HUAWEITECHNOLOGIES CO., LTD. Huawei Confidential Handover Triggering P/N Serving Cell Neighboring Cell P: Watch Time (s)(s) N: Valid Time (s) RX_LEV Thr Time RX_Lev Edge Handover UL/DL Edge HO is triggered when: Serving cell: Rxlev < Edge HO Threshold following P/N rules Neighboring cells following P/N rules with: 16 bits values lower than serving cell DL_Rx_Lev(n)> DL_Rx_Lev(s)+[Inter-cell HO Hysteresis](s->n) Candidate cell exists and available Handover
  • 12. HUAWEITECHNOLOGIES CO., LTD. Huawei Confidential Layer Handover Layer HO is triggered when: Neighboring cells following P/N rules with: 16 bits values lower than serving cell RX_LEV (n)>= [Inter-layer HO threshold] (n) + [Inter-layer HO hysteresis] (s->n) Layer & level (n)
  • 13. HUAWEITECHNOLOGIES CO., LTD. Huawei Confidential PBGT Handover Serving Cell Neighboring Cell Handover Triggering PBGT HO Threshold Time Path Loss (dB) 126dB 119dB 5 126- 119=7dB>5dB P/N P: Watch Time N: Valid Time PBGT HO is triggered when: Path loss (s) Path loss (n) > PBGT HO Margin (s->n) and 16bits(n) < 16bits (s) following P/N rules Layer & level (n) = Layer & level (s) Candidate cell exists and available Handover
  • 14. HUAWEITECHNOLOGIES CO., LTD. Huawei Confidential Parameter suggested PARAMETER PROPOSED VALUES Abbreviated Name Parameter Name MG MD ID OD Edge HO UL RX_LEV Threshold Edge HO uplink RX Level threshold -98 dBm -94 dBm -94 dBm -94 dBm Edge HO DL RX_LEV Threshold Edge HO downlink RX Level threshold -94 dBm -90 dBm -90 dBm -90 dBm Inter-layer HO Threshold Inter-layer HO Threshold -75 dBm -85 dBm -85 dBm -85 dBm Inter-layer HO Hysteresis Inter-layer HO Hysteresis 2dB 2dB 2dB 2dB PBGTMARGIN PBGT HO Margin 68 68 68 68 DLQUALIMIT DL Qual. Threshold 60 60 60 60 ULQUALIMIT UL Qual. Threshold 55 55 55 55 TALIMIT TA Threshold 62 33 2 4 Handover
  • 15. HUAWEITECHNOLOGIES CO., LTD. Huawei Confidential www.huawei.com Contents Traffic Share Solution Idle Mode & Call Control Handover 2G/3G Interoperability Power Control
  • 16. HUAWEITECHNOLOGIES CO., LTD. Huawei Confidential 2G/3G Interoperability Cell Reselection Flow(2G->3G) StartStart Inter-RAT Cell Reselection Enable=YesInter-RAT Cell Reselection Enable=Yes Ec/No>FDD_Qmin &last more than 5sEc/No>FDD_Qmin &last more than 5s 1 .RSCP > RLA_C+ FDD_Q_offset 2. Ec/NO > FDD_Q_min FDD_Qmin_Offset 3. RSCP > FDD_RSCP_MIN Above conditions are met for five consecutive seconds 1 .RSCP > RLA_C+ FDD_Q_offset 2. Ec/NO > FDD_Q_min FDD_Qmin_Offset 3. RSCP > FDD_RSCP_MIN Above conditions are met for five consecutive seconds RLA_C>level threshold for searching 3G cellRLA_C>level threshold for searching 3G cell EndEnd
  • 17. HUAWEITECHNOLOGIES CO., LTD. Huawei Confidential Parameter suggested 2G/3G Interoperability PARAMETER PROPOSED VALUES Abbreviated Na