Nsei re plan optimisation
Upcoming SlideShare
Loading in...5
×
 

Nsei re plan optimisation

on

  • 1,286 views

NSN NSEI Planing and optimisation

NSN NSEI Planing and optimisation

Statistics

Views

Total Views
1,286
Views on SlideShare
1,284
Embed Views
2

Actions

Likes
0
Downloads
29
Comments
0

1 Embed 2

http://www.docshut.com 2

Accessibility

Categories

Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment
  • 1 个 PCU 只有 16 个 EDAP

Nsei re plan optimisation Nsei re plan optimisation Presentation Transcript

  • NSEI Re-Planning Rule and Optimisation Experience Shi Wei
  • Presentation Outline
    • Why we need tuning NSEI?
    • Need information for NSEI Re-Planning
    • Results from NSEI Planning
  • 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-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
  • 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
  • TSL/PCU, GTRX/PCU, Cell/PCU Comparison un- balance
  • PCU Congestion
  • Need information for NSEI Re-Planning
  • Need for NSEI Re-Planning
    • BSC Info
    • PCU type
    • NSEI per BSC active number
    • EDAP( EDGE) Information
    • Cell Re-selection number
    • Mapinfo (longitude. latitude. And road…, GPRS hot area….
    • Cell Information (site config ,adj , gtrx number, time slot…)
    • GPRS KPI
    • ………
  • 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
  • Results from NSEI Planning
  • MapView of the old NSEI Plan -QuanZhou
    • The NSEI Plan is sub-optimal as:
    • “ Connected” cells are not on the same PCU
    • The number of cells per PCU is not balanced
  • MapView of the new NSEI Plan - QuanZhou
    • The NSEI Plan is more optimal as:
    • “ Connected” cells are on the same PCU
    • The number of cells per PCU is roughly balanced
  • 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
    • 调整前后路测中出现的小区重选事件分析:
    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%