NSEI Re-Planning Rule and Optimisation Experience Shi Wei
Presentation Outline <ul><li>Why we need tuning NSEI? </li></ul><ul><li>Need information for NSEI Re-Planning  </li></ul><...
Why need tuning NSEI ?
Time Series of Application Throughput during Cell Re-selection (Example) Each Cell Re-selection leads To a “Service Gap”
Comparison of Application Throughput and Service Delay for Intra and Inter-PCU Cell Re-Selections   Intra-PCU cell re-sele...
Comparison of Throughput during Cell Re-Selection for old and new PCU Plan   During the drive survey the number of intra-P...
TSL/PCU, GTRX/PCU, Cell/PCU Comparison un- balance
PCU Congestion
Need information for NSEI Re-Planning
Need for NSEI Re-Planning <ul><li>BSC Info </li></ul><ul><li>PCU type </li></ul><ul><li>NSEI per BSC active number  </li><...
Interaction between Tasks NSEI Planning Determining Number  of GPRS TSLs Determine number Of PCUs Optimise Adjacency Plan ...
Results from NSEI Planning
MapView of the old NSEI Plan -QuanZhou   <ul><li>The NSEI Plan is sub-optimal as: </li></ul><ul><li>“ Connected” cells are...
MapView of the new NSEI Plan   - QuanZhou   <ul><li>The NSEI Plan is more optimal as: </li></ul><ul><li>“ Connected” cells...
MapView of the old&new NSEI-JinJiang
MapView of the old&new - SiShi
MapView of the old&new - NanAn
市区 NSEI 调整后的观察验证 -1   © 2005  Nokia  V1- Filename.ppt / yyyy-mm-dd / Initials
市区 NSEI 调整后的观察验证 -2   © 2005  Nokia  V1- Filename.ppt / yyyy-mm-dd / Initials
市区 NSEI 调整后的观察验证 -3 NSEI 调整后路测效果图:
市区 NSEI 调整后的观察验证 -4 <ul><li>调整前后路测中出现的小区重选事件分析: </li></ul>小区重 选次数 所占百分 比 NSEI 修改前 PCU 内部小区重选 123 51.68% 跨 PCU 小区重选 115 48....
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Nsei re plan optimisation

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NSN NSEI Planing and optimisation

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  • 1 个 PCU 只有 16 个 EDAP
  • Nsei re plan optimisation

    1. 1. NSEI Re-Planning Rule and Optimisation Experience Shi Wei
    2. 2. Presentation Outline <ul><li>Why we need tuning NSEI? </li></ul><ul><li>Need information for NSEI Re-Planning </li></ul><ul><li>Results from NSEI Planning </li></ul>
    3. 3. Why need tuning NSEI ?
    4. 4. Time Series of Application Throughput during Cell Re-selection (Example) Each Cell Re-selection leads To a “Service Gap”
    5. 5. Comparison of Application Throughput and Service Delay for Intra and Inter-PCU Cell Re-Selections Intra-PCU cell re-selections provide much better performance than inter-PCU re-selections! Number of Samples Throughput for Intra -PCU Re-selection [kbits/sec] Throughput for Inter -PCU Re-selection [kbits/sec] Duration of Intra -PCU Service delay [sec] Duration of Inter -PCU Service delay [sec] 369 18.30 11.39 4.59 9.02
    6. 6. Comparison of Throughput during Cell Re-Selection for old and new PCU Plan During the drive survey the number of intra-PCU cell re-selections has increased significantly. This will bring performance benefits. PCU Plan Route Throughput for Intra -PCU Re-selection [kbits/sec] Throughput for Inter -PCU Re-selection [kbits/sec] Number Intra -PCU Re-selection Number Inter -PCU Re-selection Average Throughput for all Cell Re-selections [kbits/sec] PRE A 18.71 9.94 31 59 12.96 PRE B 17.34 10.84 33 70 12.92 POST A 18.34 13.2 61 31 16.61 POST B 18.81 11.59 58 26 16.58
    7. 7. TSL/PCU, GTRX/PCU, Cell/PCU Comparison un- balance
    8. 8. PCU Congestion
    9. 9. Need information for NSEI Re-Planning
    10. 10. Need for NSEI Re-Planning <ul><li>BSC Info </li></ul><ul><li>PCU type </li></ul><ul><li>NSEI per BSC active number </li></ul><ul><li>EDAP( EDGE) Information </li></ul><ul><li>Cell Re-selection number </li></ul><ul><li>Mapinfo (longitude. latitude. And road…, GPRS hot area…. </li></ul><ul><li>Cell Information (site config ,adj , gtrx number, time slot…) </li></ul><ul><li>GPRS KPI </li></ul><ul><li>……… </li></ul>
    11. 11. Interaction between Tasks NSEI Planning Determining Number of GPRS TSLs Determine number Of PCUs Optimise Adjacency Plan Missing/Obsolete Ensure cells are on right BSC Only if all tasks are addressed accurately will the NSEI-plan be optimal
    12. 12. Results from NSEI Planning
    13. 13. MapView of the old NSEI Plan -QuanZhou <ul><li>The NSEI Plan is sub-optimal as: </li></ul><ul><li>“ Connected” cells are not on the same PCU </li></ul><ul><li>The number of cells per PCU is not balanced </li></ul>
    14. 14. MapView of the new NSEI Plan - QuanZhou <ul><li>The NSEI Plan is more optimal as: </li></ul><ul><li>“ Connected” cells are on the same PCU </li></ul><ul><li>The number of cells per PCU is roughly balanced </li></ul>
    15. 15. MapView of the old&new NSEI-JinJiang
    16. 16. MapView of the old&new - SiShi
    17. 17. MapView of the old&new - NanAn
    18. 18. 市区 NSEI 调整后的观察验证 -1 © 2005 Nokia V1- Filename.ppt / yyyy-mm-dd / Initials
    19. 19. 市区 NSEI 调整后的观察验证 -2 © 2005 Nokia V1- Filename.ppt / yyyy-mm-dd / Initials
    20. 20. 市区 NSEI 调整后的观察验证 -3 NSEI 调整后路测效果图:
    21. 21. 市区 NSEI 调整后的观察验证 -4 <ul><li>调整前后路测中出现的小区重选事件分析: </li></ul>小区重 选次数 所占百分 比 NSEI 修改前 PCU 内部小区重选 123 51.68% 跨 PCU 小区重选 115 48.32% NSEI 修改后 PCU 内部小区重选 160 58.82% 跨 PCU 小区重选 112 41.18%

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