155908974 Huawei WCDMA RNO RF Optimization

HUAWEI TECHNOLOGIES CO., LTD.

October, 9th 2007

HUAWEI TECHNOLOGIES Co., Ltd.

www.huawei.com

HUAWEI Confidential

Security Level:

Page 1

WCDMA RNO

RF Optimization

AMX Perú Claro UMTS Project

HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confidential Page 2

Contents

Chapter 1 Optimization Approach Overview

Chapter 2 Professional Optimization Tools


[1] Single Site Verification:

To verify the functionality of every new site. We must be sure

there are no faults related to site installation or parameter

settting.

[2] RF Optimisation:

Once clusters of sites are ready, RF Optimisation can be started

in order to optimise coverage and minimise interference and

pilot pollution.

All RF-related failures or drop calls must be resolved.

Optimisation Approach Overview (1/3)


[3] Services Testing & Parameter Optimisation:

Comprehensive services testing should be carried out in areas of

good coverage to determine system performance

Causes of any failures must be identified and whenever

necessary relevant parameters should be optimised.

[4] Regular Reference Routes & Stats Analysis:

Regular testing & stats analysis will be needed to identify and

resolve any new issues as a result of (e.g. increased traffic).

Optimisation Approach Overview (2/3)


Network Optimization Phases

RF optimization

Y

N

N

Y

Single site verification

80％ sites in the

cluster ready?

Service test and

parameter optimization

Routine drive test and stats. analysis

Acceptance criteria

satisfied?

New site integrated

Optimization

preparation

Acceptance


To enhance network performance

--- e.g. coverage/accessibility/mobility …

To resolve specific issues

--- e.g. interference/coverage …

To improve subscribers’ QoE

--- e.g. service quality/drop calls…

To enhance network stability

--- e.g. traffic increase/upgrade…

Network Optimization Target


Clusters

RF optimization should be carried out for groups or clusters of sites

rather than on single site basis.

Drive Routes

Cluster drive surveys should include the coverage areas of each cell

and all the major roads and streets as well as any other important

locations.

Tools

PCTEL gps/scanner

Huawei/Qualcomm UE in continuous AMR call

Huawei Data Card

RF Optimization - Preparation


Data

Analysis

RF Optimisation – Intro (2/2)

Process Flow: Start

Identify any

RF Issues

Identify candidate

cells for changes

Determine amount of

change

Identify nature of

required changes

Implement changes

Repeat Drive Test

Yes

End

Problem

Resolved?

No

Drive Test


RF Parameters Optimization

Engineering parameters adjustment

To adjust antenna down tilt

To adjust antenna azimuth

To adjust antenna location

To adjust antenna height

To replace antenna

To replace site

To add new cell

Radio part parameters adjustment

To optimize neighbor cell list


Poor Coverage: Example


Pilot Pollution: Example


MSC/SSP/VLR

HLR/AC

GMSC/SSP

PSTN PLMN ISDN

iManagerTM M2000

GENEX Nastar

GENEX Assistant

GENEX Probe

CN

Node B

Node B

Node B

RNC

RNC

Node B

Node B

Node B RNS

RNS

GENEX Probe

AGILENT

QUALCOMM

HUAWEI RNC

Professional Optimization Tools

Performance/alarms

/configurations/

engineering para. Capture test

data

An

aly

sis

Resu

lt

sh

arin

g

RAN auto configuration console


Services Testing & Parameter Optimisation (2/6)

Once RF optimisation is completed detailed testing of CS and PS

services should be completed

During testing, end-to-end logs should be collected (i.e. UE as well

as RAN & when necessary CN)

Any failures (e.g. AF, CDs, etc) MUST be analysed to determine

exact causes

Appropriate parameters should be identified for possible

optimisation to resolve failures or to reduce impact of any system

defects


Optimization Report

Below you can appreciate parts of an Optimization Report

- Basic Info

- Performance Summary

- RF Plots

- RF Optimization

- Service Optimization

- Changing Request

- Glossary


Performance Summary


DT RF Performance Plots

- Scanner RSCP Plot

- Scanner EcIo Plot

- Pilot Pollution Plot

- Best Service Plot

- UE (VP&AMR) RSCP Plot

- UE (VP&AMR) EcIo Plot

- UE (VP&AMR) Tx Power Plot

- UE (VP&AMR) Best Server Plot


DT RF Performance Plots


Service Performance Analysis


Change Request


Summary

UMTS Network

Optimization

To provide a more competitive

network for Operator To provide better quality of

experience for Subscribers

Trade-off between optimized

coverage, capacity, quality

Ongoing optimization across

network life cycle

HUAWEI TECHNOLOGIES CO., LTD.

October, 9th 2007

HUAWEI TECHNOLOGIES Co., Ltd.

www.huawei.com

HUAWEI Confidential

Security Level:

Page 21

Thank You

www.huawei.com

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155908974 Huawei WCDMA RNO RF Optimization