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8/12/2019 Gsm Rf Optimization1 130923044142 Phpapp02
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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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Lucent Technologies
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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Lucent Technologies
Why Optimization ?
- Deviations between pla
d maintaining the required
- Proprietary
n and reality
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What is OptimizatioWhat is Optimizatio
Desig
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Lucent Technologies
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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Lucent Technologies
-
- Antenna pattern distortion
Environment- Seasonal environmental ch
- Environmental changes su
ath loss characteristics ution
- Proprietary
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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Lucent Technologies
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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Lucent Technologies
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
- Proprietary
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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Lucent Technologies
Handover behavior im
Traffic distribution
d to Optimizationd to Optimization
t :
rence
- Proprietary
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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Lucent Technologies
= _ _ _
Criteria met if C1> 0. MS will caC1 value.
Max(B,0))
ge - RXLEV_ACCESS_MIN
- Proprietary
- 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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Lucent Technologies
sis sis
LAC 2
Reselect Hysteresis LA
Reselect Hysteresis LA
- Proprietary
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Power ControlPower Control
Signal
Level
Ran
012
Rxl-110