3g optimization flow

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3G Optimization Flow

ISSUE 1.0


WCDMA optimization is very important

part in the life of the network.

Mainly, the optimization involves the

preparation, single site verification, RF

optimization and parameters

optimization.


Chapter 1 Introduction of Optimization FlowChapter 1 Introduction of Optimization Flow

Chapter 2 The preparation for the Optimization ProjectChapter 2 The preparation for the Optimization Project

Chapter 3 Single Site VerificationChapter 3 Single Site Verification

Chapter 4 RF OptimizationChapter 4 RF Optimization

Chapter 5 Parameters OptimizationChapter 5 Parameters Optimization

Chapter 6 Optimization ReportChapter 6 Optimization Report


Introduction of Optimization FlowIntroduction of Optimization Flow







Chapter 6 Optimiztion ReportChapter 6 Optimiztion Report


The Preparation for Projection

Getting the Network Information

Environment Partition and Optimization Group

Optimization Tools and Software



Getting the Network Information

The radio network planning report

The radio network optimization report (optional)

The parameters tables about UTRAN

The statistic data and the subscribers

complaints


The Preparation for the Optimization Projection Environment Partition and Optimization Group

RNO leader-1

Data Analyzer

Drive Test Operator

Driver

RNO leader-n

Data Analyzer

Drive Test Operator

Driver

..................

RNO manager



Optimization tools and Optimization software

Optimization tools

− UMTS scanner (DTI)

− UMTS test UE

− Digital camera, GPS, Compass

− YBT250 to position interference

Optimization software

− Probe

− Assistant

− Traffic statistics data analysis

− Mapinfo


Single Site Verification

Purpose

The single site verification is a part of the WCDMA network optimization to ensure that the basic functions of the cell are normal, such as call access, call quality, handover and so on.

Preparation

Checking alarms

Checking the state of cell

Checking the parameters of radio access network

Checking the configuration: scrambling code, power configuration, neighbor cell table, handover parameters


Single Site Verification

Site verification

Checking the service function of each site

Signal strength

Feeder / Jumper

LA/RA update

PS attach / detach

Voice call setup

PDP active

Intra-frequency handover

Inter-system handover

Inter-system cell-reselection.


RF Optimization

Purpose

Optimize CPICH, services coverage and best server

Decrease the interference to the minimum level

Decrease the pilot pollution to the minimum level

Optimize neighbour cells table

Solve the call drop caused by RF


RF Optimization

Drive test Preparation

− Tools− Map− Parameters− Car, human resource

Data analysis− Poor coverage− Best Server− Pilot pollution− Neighbor cells table− Interference− Call drop caused by RF


RF Optimization

Antenna tilt

Antenna azimuth

Antenna location

Antenna height

Antenna type

Site location

New site


Purpose of Parameters Optimization

Purpose of parameters optimization

Decrease the access fail ratio

Decrease the call drop ratio

Increase the quality of service

The tools and data for analysis:

Scanner and UE

RNC record data

Statistic tools and KPI

MSC & SGSN record if necessary


Drive test

The contents of drive test

The call setup test for voice service

The continuous call test for voice service

Idle mode test

The call setup test for video phone service

The continuous call test for voice service

The call setup test for PS service

The continuous call test for PS service

The test should be performed repeatedly to the position with The test should be performed repeatedly to the position with problems to make sure that the problem is repeatable problems to make sure that the problem is repeatable


Drive Test Data Analysis

Drive Test Data Analysis

Analysing and finding the solution for access failure (system bugs, power control parameter, cell selection and reselection parameter etc.)

Analysing and finding the solution for drop call (system bugs, power control parameter, handover parameter etc.)

Analysing and finding the solution for service quality related problems (system bugs, power control parameter, RLC parameter etc.)


Adjustment Recommendation and Implementation

Adjustment Recommendation and Implementation

Common Control Channel Power Allocation parameters

RL Maximum Power parameters

Intra-frequency Handover parameters

Inter-frequency Handover parameters

Inter-RAT Handover parameters

Power Control parameters

Access parameters

Other related parameters


Test for Special Areas

Special area refers to a small district or indoors environment

Operator offices, residence of VIP

Key hotels or entertainment location

Government location

Locations of large company or group subscribers

Locations such as railway stations or airports

We must CQT indoor and DT outdoor in the special areas !


Optimization Report

The 《 optimization report 》 should be presented after the project passes the customer acceptance. The optimization report should include:

Project background introduction

Existing network status

Acceptance criteria

Optimization process

Problem analysis and adjustment recommendation, and the effect for the implemented part

Acceptance test and result

Leftover problems and suggestions from the optimization point of view.

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3g optimization flow

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