xsdenied07
2010-06-16, 06:08 PM
Hello Guys,
WCDMA Coverage Problem Analysis.(Password:-n/a)
Contents
1 Overview of Coverage Analysis ................................................................................................................ 6
2 Coverage Problems Classifications ............................................................................................................ 6
2.1 Signal Dead Zone ................................................................................................................................. 6
2.2 Coverage Void ..................................................................................................................................... 7
2.3 Cross-cell Coverage .............................................................................................................................. 7
2.4 Pilot Pollution ....................................................................................................................................... 8
2.5 Imbalance of Uplink and Downlink ...................................................................................................... 9
3 Coverage Analysis Flow .......................................................................................................................... 10
3.1 Preparations for related Knowledge .................................................................................................... 10
3.1.1 Planning Scheme .......................................................................................................................... 10
3.1.2 Analysis Tools .............................................................................................................................. 11
3.1.3 Configuration Parameters Adjustment .......................................................................................... 11
3.2 Coverage Data Analysis ...................................................................................................................... 13
3.2.1 Drive Test Data Analysis .............................................................................................................. 13
3.2.2 Traffic Measurement Data Analysis ............................................................................................. 21
3.2.3 Trace Data Analysis ...................................................................................................................... 21
3.2.4 User Complaints Analysis ............................................................................................................ 21
4 Coverage Enhancement Strategies ........................................................................................................... 21
4.1 NodeB Configuration Adjustment....................................................................................................... 21
4.2 Coverage Enhancement Technology ................................................................................................... 26
5 Typical Coverage Problems ..................................................................................................................... 27
5.1 Coverage Void due to Inappropriate Site Planning ............................................................................. 27
5.1.1 Problem Descriptions .................................................................................................................... 27
5.1.2 Analysis ....................................................................................................................................... 28
5.2 Cross-cell Coverage due to Inappropriate Site Selection .................................................................... 29
5.2.1 Problem Descriptions .................................................................................................................... 29
5.2.2 Analysis ....................................................................................................................................... 30
5.3 Coverage Restricted due to Irrational Antenna Installation ................................................................ 31
5.3.1 Problem Descriptions .................................................................................................................... 31
5.3.2 Analysis ....................................................................................................................................... 32
5.4 Coverage Restricted due to Antenna Installation Failure .................................................................... 33
5.4.1 Problem Descriptions .................................................................................................................... 33
5.4.2 Analysis ....................................................................................................................................... 33
6 Concerns at the Network Optimization Phases ........................................................................................ 34
6.1 Single Site Test Phase ......................................................................................................................... 34
6.2 Evaluation Phase before the Optimization .......................................................................................... 34
6.3 RF Optimization Phase........................................................................................................................ 34
6.4 Parameter Optimization Phase ............................................................................................................ 35
6.5 Network Optimization Project Acceptance Phase ............................................................................... 35
7 Summary
9302
Pls Add reputation and say thanks...:p:p:p
WCDMA Coverage Problem Analysis.(Password:-n/a)
Contents
1 Overview of Coverage Analysis ................................................................................................................ 6
2 Coverage Problems Classifications ............................................................................................................ 6
2.1 Signal Dead Zone ................................................................................................................................. 6
2.2 Coverage Void ..................................................................................................................................... 7
2.3 Cross-cell Coverage .............................................................................................................................. 7
2.4 Pilot Pollution ....................................................................................................................................... 8
2.5 Imbalance of Uplink and Downlink ...................................................................................................... 9
3 Coverage Analysis Flow .......................................................................................................................... 10
3.1 Preparations for related Knowledge .................................................................................................... 10
3.1.1 Planning Scheme .......................................................................................................................... 10
3.1.2 Analysis Tools .............................................................................................................................. 11
3.1.3 Configuration Parameters Adjustment .......................................................................................... 11
3.2 Coverage Data Analysis ...................................................................................................................... 13
3.2.1 Drive Test Data Analysis .............................................................................................................. 13
3.2.2 Traffic Measurement Data Analysis ............................................................................................. 21
3.2.3 Trace Data Analysis ...................................................................................................................... 21
3.2.4 User Complaints Analysis ............................................................................................................ 21
4 Coverage Enhancement Strategies ........................................................................................................... 21
4.1 NodeB Configuration Adjustment....................................................................................................... 21
4.2 Coverage Enhancement Technology ................................................................................................... 26
5 Typical Coverage Problems ..................................................................................................................... 27
5.1 Coverage Void due to Inappropriate Site Planning ............................................................................. 27
5.1.1 Problem Descriptions .................................................................................................................... 27
5.1.2 Analysis ....................................................................................................................................... 28
5.2 Cross-cell Coverage due to Inappropriate Site Selection .................................................................... 29
5.2.1 Problem Descriptions .................................................................................................................... 29
5.2.2 Analysis ....................................................................................................................................... 30
5.3 Coverage Restricted due to Irrational Antenna Installation ................................................................ 31
5.3.1 Problem Descriptions .................................................................................................................... 31
5.3.2 Analysis ....................................................................................................................................... 32
5.4 Coverage Restricted due to Antenna Installation Failure .................................................................... 33
5.4.1 Problem Descriptions .................................................................................................................... 33
5.4.2 Analysis ....................................................................................................................................... 33
6 Concerns at the Network Optimization Phases ........................................................................................ 34
6.1 Single Site Test Phase ......................................................................................................................... 34
6.2 Evaluation Phase before the Optimization .......................................................................................... 34
6.3 RF Optimization Phase........................................................................................................................ 34
6.4 Parameter Optimization Phase ............................................................................................................ 35
6.5 Network Optimization Project Acceptance Phase ............................................................................... 35
7 Summary
9302
Pls Add reputation and say thanks...:p:p:p