Network Optimization procedureNetwork Optimization procedure

Huawei Technologies

Course ContentsCourse Contents

Concept of RN optimization

KPI of radio network

Work flow of RN optimization

Parameter adjustment principles

RN optimization tools introduction

Concept of RN Optimization Concept of RN Optimization

Radio network optimization means network performance

improvement utilizing existing network resources.

Steps in general

Data collection and verification

Data analysis

Parameter and hardware adjustment

Optimization result confirm and reporting

The purpose is increasing the utilization of network resources

and solving the existing and potential problem on the network,

identifying solutions for future network planning.

Concept of RN Optimization Concept of RN Optimization

Capacity

CoverageQuality

Optimize

Concept of RN OptimizationConcept of RN Optimization

Due to the mobility of subscribers and complexity of radio

wave propagation, most of network problems are caused by

increasing subscribers and the changing environments.

RN Optimization is a continuous process that is required as

the network evolves

Concept of RN OptimizationConcept of RN Optimization

In the following case, the network should be optimized

New network or expansion on existing network

The network quality decreased seriously and there are many

complaints from subscribers.

An event occurs suddenly which affects the network

performance seriously.

The number of subscribers increased and affects the network

performance gradually.

Concept of RN OptimizationConcept of RN Optimization

TRAFFICSTATISTICS

DRIVE TEST

CUSTOMERCOMPLAINTS

OPTIMIZE

• Input for Optimization

Concept of RN optimization

KPI of radio network

Work flow of RN optimization

Parameter adjustment principles

RN optimization tools introduction

Course ContentsCourse Contents

KPI of Radio NetworkKPI of Radio Network

KPI (KEY PERFORMANCE INDICATORS)

Indicates overall performance of network over a period of time

Good way to monitor network trends and anticipate future problems

Data obtained from drive test and traffic statistics

KPI of Radio NetworkKPI of Radio Network

Typical Radio Network KPI

BTS3

BTS4

BTS1

BTS2

KPI Parameter Source

Call Drop Rate OMC/Drive test

Congestion Rate Drive test

Handover Success Rate OMC/Drive test

Busy Hour Traffic OMC

TCH Utilization OMC

Call Setup success rate OMC/Drive test

Coverage Drive test

Quality Drive test

Concept of RN optimization

KPI of radio network

Work flow of RN optimization

Parameter adjustment principles

RN optimization tools introduction

Course ContentsCourse Contents

Flow Chart of Network OptimizationFlow Chart of Network Optimization

Concept of RN optimization

KPI of radio network

Work flow of RN optimization

Parameter adjustment principles

RN optimization tools introduction

Course ContentsCourse Contents

Parameter Adjustment Principles Parameter Adjustment Principles

IDENTIFYPROBLEM

MAKECHANGES

MONITOR EFFECT

MAKECHANGES

•Parameter adjustment procedure

Parameter Adjustment Principles Parameter Adjustment Principles

•Parameter Types

Radio Parameters Engineering Parameters

Handover Parameters

Handover Parameters

Handover Parameters

Antenna

Orientation

Antenna

D-tilt

Antenna

Height

Parameter Adjustment Principles Parameter Adjustment Principles

Adjustment of cell data parameters

Adjust the cell parameters according to the features of actual

radio channel traffic and signaling load. The parameters are for

cell select,cell reselect,call setup, handover etc, so as to

improve the overall network performance and service quality to

the end user.

Another basic principle of radio parameter adjustment is to

maximize the current network resource, traffic sharing in the the

whole network, increase the utilization of the equipment, so as to

increase the profit-investment ratio.

Parameter Adjustment PrinciplesParameter Adjustment Principles

According to the feature of problem to be solved, there are

two types of radio parameter adjustment.

Solve static problems: Analyze the average traffic and signaling

flows of the network and solve the network problems that

existed long time

Solve traffic overload and congestion problems during some

special period caused by special events.

Concept of RN optimization

KPI of radio network

Work flow of RN optimization

Parameter adjustment principles

RN optimization tools introduction

Course ContentsCourse Contents

Driving Test ToolsDriving Test Tools

The following are the frequently used drive test tools:

TEMS and GIMS

Ant Pilot and GSM 2000

SAFCO Walkabout & SAFCO OPAS

TS9951

NEPTUNE

Driving Test ToolsDriving Test Tools

Drive test Tool application

Identify specific problems in the network

Attend to customer complaints

Perform network benchmarking with other operators

Collect periodic network data for reporting

Check coverage in new areas

Driving Test ToolsDriving Test Tools

Example: Drive test data

Signaling AnalyzerSignaling Analyzer

Signaling analyzer

In real time, MA-10 signaling analyzer can trace A-bis interface s

ignaling message, A-G interface signaling message, SS7 signali

ng message of ISUP, TUP and INAP, and also bit error rate of tr

ansmission system.

For further analysis the signaling message files can be saved du

ring online tracing, then they can be opened for analysis at anyti

me.

Spectrum AnalyzerSpectrum Analyzer

Spectrum analyzer

The spectrum analyzer is mainly used to test the characteristics

of frequency, including spectrum, power of the adjacent channel,

and frequency scanning etc.

OMC Traffic StatisticsOMC Traffic Statistics

OMC

Provides flexible means to record different information from the

network

Able to sample large amounts of data to give a better picture of

the network on a longer period of time