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GSM Network

Lucent Technologies ProprietaryUse Pursuant to Company Instructions - All Rights Reservede No.1

Lucent Technologies

Workshop

Macro Cell

- Proprietary

Micro Cells


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AGENDAAGENDA

IntroductionIntroduction Single Band OptimizationSingle Band Optimization

Network Optimization ProcNetwork Optimization Proc

Optimization PhasesOptimization Phases Lucent BSS Optimization PLucent BSS Optimization P

Cell Selection/ Cell ReselecCell Selection/ Cell Reselec


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Power ControlPower Control ProceduresProcedures

HandoverHandover ProceduresProcedures

Drive Testing and AnalysisDrive Testing and Analysis

Drive Test EquipmentDrive Test Equipment

hilosophyhilosophy

ssss

rameters rameters

tiontion

- Proprietary


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IntroductionIntroduction

What is Optimization ?

- Activity of achieving aquality as designed


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Why Optimization ?

- Deviations between pla

d maintaining the required

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n and reality


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What is OptimizatioWhat is Optimizatio

Desig


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Optimization

Impleme

- Proprietary

Planning

ntation


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Why Optimization ?Why Optimization ?

Inaccuracy of radio plannin

- Statistical variations in the- Finite terrain database reso

Implementation


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-

- Antenna pattern distortion

Environment- Seasonal environmental ch

- Environmental changes su

ath loss characteristics ution

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nges, e.g trees, leaves

h as new highways, new buildings


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Single Band OptimizaSingle Band Optimiza

Coverage-Good signal level acros

a cells service area must be minimiz

Interference-A reasonable level ofservice area in order to provide a qu


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Handover Behavior-The quality ofto handover behavior is good, no unacceptable level, BTS & MS use min

Traffic Distribution-The quality ofto traffic distribution is good, maximu

ion Philosophy ion Philosophy

the whole cell, coverage holes within

d.

interference must be contained at cellslity air-interface.

- Proprietary

the air-interface in a cell with respectecessary handovers, Rxquality at

imum transmit power.

he air-interface in a cell with respectm amount of traffic can be handed.


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Optimization PhasesOptimization Phases

Initial Optimization

c

Site Audit

Proper Parameters

Verify Neighbors lis

Reviewing Frequenc

Verify existing

Analysis & Id

from PM

customer


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Primary Optimization

Maintenance Optimization

c

PrioritizationIdentify Soluti

Retest the pro

Consistency C

Fine-tuning of

On goin

Databa

se

y Plan

coverage, site design objectives

ntification of Problem areas/cells

& drive test statistics,

com laints

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f problems on and Implement

lem areas

eck of the OMC database

parameters

g process, weekly optimization

se maintenance and consistency audits


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BSSBSS parameters relatparameters relat

Areas of improveme

Minimization of interf


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Handover behavior im

Traffic distribution

d to Optimizationd to Optimization

t :

rence

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provement


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Cell (Re)SelectionCell (Re)Selection

C1 CriteriaUsed for cell selecti


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C2 Criteria

Used in a hierarchichierarchicselection only

n and re-selection

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ll cell structure for re-


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Cell (Re)SelectionCell (Re)Selection

C1 = (A

where:

A = Received Level Aver


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= _ _ _

Criteria met if C1> 0. MS will caC1 value.

Max(B,0))

ge - RXLEV_ACCESS_MIN

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- max.ou pu power o e

mp on to the cell with the highest


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Cell Reselect HystereCell Reselect Hystere

LAC 1


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sis sis

LAC 2

Reselect Hysteresis LA

Reselect Hysteresis LA

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Power ControlPower Control

Signal

Level

Ran

012

Rxl-110

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