15 gsm bss network kpi (rxquality) optimization manual.doc

5/21/2018 15 GSM BSS Network KPI (RxQuality) Optimization Manual.doc

GSM BSS Network KPI (RxQuality) Optimization Manual INTRN!"

Pro#u$t name %on&i#entiality le'el

GSM BSS INTRN!"

Pro#u$t 'erion Total * pa+e

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GSM BSS Network KPI (RxQuality) Optimization

Manual

(.or internal ue only)

Prepare# /y GSM01MTS NetworkPer&orman$e Reear$23epartment

3on+4uan

3ate 5--67-7-8

Re'iewe# /y 3ate yyyy7mm7##

Re'iewe# /y 3ate yyyy7mm7##

Grante# /y 3ate yyyy7mm7##

9uawei Te$2nolo+ie %o:; "t#:

!ll ri+2t reer'e#

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Revision Record

Date Revisionversion

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5--67-7-8 :- 3ra&t $omplete#: 3on+4uan

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GSM BSS Network KPI (RxQuality) Optimization

Manual

Keywor#> RxQuality

!/tra$t>

T2i #o$ument analyze &a$tor t2at a&&e$t t2e #ownlink RxQuality on t2eBSS i#e: Bae# on t2e analyi; ome met2o# are ela/orate# to ?ui$klyimpro'e t2e #ownlink RxQuality: T2e 1m ?uality i alo to /e impro'e# toa'oi# poor RxQuality &ailure; $all #rop; an# &rame #eletion reulte# &rom t2e'oi$e #e$o#in+ #e$reae in t2e $all: Some meaure &or optimizin+ t2i KPI

are pro'i#e# in t2i #o$ument to 2elp &iel# en+ineer a##re ?ualitypro/lem: T2i #o$ument tar+et at optimizin+ network KPI an# impro'in+network ?uality o a to make oun# preparation &or t2e &inal network#eli'ery:

Keywor#> RxQuality (3ownlink)

"it o& a//re'iation>

Abbreviations

Full spelling

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Contents

1 Basic Principle................................................................5

: 3e&inition::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::8

:5 T2eory Intro#u$tion:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::8

:= Re$ommen#e# .ormula::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::8

:< Si+nalin+ Pro$e#ure an# Statiti$al Point:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::8

2 Infuencing Factors.........................................................6

Anal!sis Process an" #pti$i%ation &etho"s.....................'

=: !nalyi Pro$e::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::*

=:: Pro$e#ure &or RxQuality Pro/lem "o$ation:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::*

=:5 RxQuality Optimization Met2o#:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::@

=:5: Poor RxQuality on ntire Network::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::6

=:5:5 Pai'e Intermo#ulation:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::-

=:5:= Intra7Network Inter&eren$e::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

=:5:< Inter7Network Inter&eren$e::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::5

=:5:8 9ar#ware .ault:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::5

=:5:A 9uawei !nti7Inter&eren$e Te$2nolo+y:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

Network plannin+

3ata $on&i+uration

.re?uen$y plannin+

%o'era+e

Inter&eren$e

Power $ontrol

Inter&eren$e7Bae# %2annel !i+nment (IB%!)

1ISS

I%%

T2ee pre$e#in+ &a$tor are #e$ri/e# in %2apter =:

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Anal!sis Process an"#pti$i%ation &etho"s

T2i e$tion aim to pro'i#e /aeline re$ommen#ation &or #ata $on&i+uration:In a##ition; it 2i+2li+2t ome met2o# &or impro'in+ t2e RxQuality on t2epremie t2at t2e proCe$t i $lear o& maCor pro/lem an# t2e $o'era+e i +oo#:

.1 Anal!sis ProcessT2e RxQuality re&le$t t2e network ?uality &rom two perpe$ti'e: T2e &irt iTR47/ae# $ounter; an# t2e e$on# i #ri'e tet or $utomer $omplaint: T2eRxQuality i impro'e# mainly /y eliminatin+ or re#u$in+ inter&eren$e: T2einter&eren$e i eliminate# t2rou+2 inter&eren$e our$e in'eti+ation to re#u$eintermo#ulation; proper plannin+ o& network &re?uen$y; &re?uen$y 2oppin+$2e$k; an# repla$ement o& a+e# R. 2ar#ware: T2e inter&eren$e i re#u$e# /y#e$reain+ t2e tranmit power o& R. $omponent w2ile enurin+ t2e ?uality;an# intelli+ently $2ooin+ t2e &re?uen$ie or timelot wit2 little inter&eren$e&or $2annel ai+nment: T2e ?uality an# $apa$ity are $ontra#i$tory: 2en t2eBTS $on&i+uration ex$ee# a pe$i&i$ limit; t2e ?uality i a&&e$te#:

.1.1 Proce"ures +or R)*ualit! Proble$0ocation

T2e $ommon pro$e#ure &or RxQuality pro/lem lo$ation are #e$ri/e# a&ollow>

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.2 R)*ualit! #pti$i%ation &etho"sT2e poor RxQuality may /e $aue# /y t2e &ollowin+ &a$tor>

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9ar#ware tranmiion &ault (&aulty TR4 an# antenna ytem in $om/inationmo#e)

Improper #ata $on&i+uration

Intra7 network inter&eren$e

Inter7network inter&eren$e

%lo$k &ault

%o'era+e an# uplink7#ownlink im/alan$e

Improper power $ontrol ettin+

2en t2e RxQuality i poor; t2e reaon &or poor RxQuality are $lai&ie# interm o& t2e pre$e#in+ &a$tor: T2en; t2e RxQuality i impro'e# &rom twoperpe$ti'e: %2e$k w2et2er t2e poor RxQuality o$$ur on t2e entire network

or only in ome $ell or BTS: I& poor RxQuality o$$ur on t2e entire network;$aue are in'eti+ate# in term o& internal network inter&eren$e an# externalnetwork inter&eren$e: I& poor RxQuality only o$$ur in ome $ell or BTS;t2e pro$e#ure in e$tion=:are taken to in'eti+ate t2e $aue: T2eRxQuality i impro'e# /y examinin+ inter&eren$e; mo#i&yin+ #ata$on&i+uration; repla$in+ ome 2ar#ware; $leanin+ &ee#er an# Cumper$onne$tor; an# repla$in+ a+e# &ee#er:

.2.1 Poor R)*ualit! on ntire et3or,

!$$or#in+ to tatiti$ o& tra&&i$ meaurement $ounter; i& t2e poor RxQualityo$$ur on t2e entire network; it $annot /e optimize# t2rou+2 optimization inonly ome $ell or BTS: Dou are a#'ie# to &ollow t2e pro$e#ure #e$ri/e#in e$tion =:5:::

.2.1.1 Processing &etho"s

.or t2e poor RxQuality o& t2e entire network; $2e$k t2e &re?uen$y plannin+:In $enario o& S



Bei#e; on t2e network wit2 2i+2 noie &loor; t2e RxQuality $an /e +reatlyimpro'e# /y re#u$in+ t2e network noie &loor an# inter&eren$e t2rou+2 t2epower $ontrol:

I& t2e pre$e#in+ a#Cutment till $annot ol'e t2e pro/lem; t2e latet R03reult o& t2e Per&orman$e 3ept are applie#: T2ee R03 reult in$lu#eyn$2ronization network; I%% te$2nolo+y; an# IB%!: T2e RxQuality iimpro'e# wit2out re#u$in+ t2e network $apa$ity:

T2e maximum RxQuality i not t2e ultimate aim o& t2e network optimization: T2eultimate +oal i to enri$2 t2e $utomer experien$e a$$or#in+ to #i&&erent /an#wi#t2;$apa$ity re?uirement; tra&&i$ mo#el; an# network $enario:

.2.1.2 ra4c &easure$ent Anal!sis

None:

.2.1. Alar$ Anal!sis

None:

.2.2 Passive Inter$o"ulation


2en two R. i+nal are tranmitte# to a nonlinear $omponent; or tranmitte#t2rou+2 a #i$ontinuou tranmiion me#ium; a erie o& new &re?uen$y$omponent are +enerate#: T2ee &re?uen$y $omponent ati&y t2e &ollowin+&ormula: Suppoe t2e &re?uen$ie o& t2ee two i+nal are & an# &5 (a/olute&re?uen$ie):

.n F m& n&5; an# .n F m& H n&5

T2e mot $ommon type are t2ir#7or#er; &i'e7or#er; an# e'en7or#erintermo#ulation: T2e RxQuality o& t2e ytem i a&&e$te# w2en t2eintermo#ulation $omponent are tranmitte# to t2e Rx /an# an# t2e le'elex$ee# a pe$i&i$ limit:

T2e intermo#ulation inter&eren$e i +enerate# mainly /e$aue t2e &re?uen$yinter'al i 2ort: In t2i $ae; t2e inter&eren$e $an /e eliminate# /y in$reain+t2e $ell &re?uen$y inter'al:

mnJ F ; m n F x; in w2i$2 x tan# &or x or#er:

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None:


None:

.2. Intraet3or, Inter+erence

.2..1 Processing &etho"s

T2e intra7network inter&eren$e i $lai&ie# into two $ate+orie> $o7$2annelinter&eren$e an# a#Ca$ent7$2annel inter&eren$e:

T2e &re?uen$y reue i a#opte# on t2e GSM network: 2en t2e &re?uen$yreue ra#iu o& two $ell in t2e ame &re?uen$y or a#Ca$ent &re?uen$ie iimproperly mall; t2e $o7$2annel or a#Ca$ent7$2annel inter&eren$e i eay to+enerate:

T2e &ollowin+ met2o# are ue# &or a##rein+ t2e intra7network inter&eren$e:%2e$k w2et2er t2e &re?uen$y plannin+; epe$ially t2e $o7$2annel an#

a#Ca$ent7$2annel &re?uen$y reue; i proper:Bei#e; t2e $o'era+e o& ea$2 $ell i $ontrolle# in a$$or#an$e wit2 pra$ti$alituation: It i important epe$ially &or t2e network wit2 2ea'y tra&&i$ an# le&re?uen$y reour$e to $ontrol t2e $o'era+e an# maintain proper $o7$2annelan# a#Ca$ent7$2annel &re?uen$y reue:

T2e #ata 2oul# /e $on&i+ure# a$$urately: T2e proportion o& inter7$ell $o7$2annel an# a#Ca$ent7$2annel &re?uen$ie 2oul# /e proper in t2e #ata$on&i+uration:

T2e intra7network inter&eren$e $an /e ol'e# t2rou+2 &re?uen$y optimization;antenna a#Cutment; an# $o'era+e $ontrol: In a##ition; tool u$2 a Natar$an /e ue# &or &re?uen$y optimization: %2e$k t2e $o7$2annel an# a#Ca$ent7

$2annel &re?uen$ie an# re$ommen#e# &re?uen$ie /y enterin+ en+ineerin+parameter: T2e &re?uen$ie wit2 e'ere inter&eren$e are repla$e# to +reatlyimpro'e t2e RxQuality:

.2..2 ra4c &easure$ent Anal!sis

None:

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.2.. Alar$ Anal!sis

None:

.2.( Interet3or, Inter+erence

.2.(.1 Processing &etho"s

T2e inter7network inter&eren$e $an /e $lai&ie# into t2e &ollowin+ t2ree$ate+orie>

Repeater inter&eren$e> It $an /e ol'e# /y $ommuni$ation wit2 repeater

'en#or:

Inter7R!T inter&eren$e> T2e &ilter i a##e# to &ilter out inter&eren$e: Ina##ition to &re?uen$y mo#i&i$ation; t2e $o7ite BTS #o not ue t2e 7GSM&re?uen$ie: Bei#e; t2e +ain o& two antenna $an /e re#u$e# /y in$reain+t2e pa$e /etween two antenna or antenna tilt:

Se$urity e?uipment inter&eren$e> In&ormation a/out t2e BTS wit2inter&eren$e i $olle$te#: Dou are a#'ie# to repla$e t2e e$urity e?uipmentwit2 t2e re$ommen#e# Inter&eren$e 1nit (I1):

.2.(.2 ra4c &easure$ent Anal!sis

None:

.2.(. Alar$ Anal!sis

None:

.2.5 ar"3are Fault


T2e inter&eren$e $aue# /y 2ar#ware &ault i motly #ue to t2e pai'eintermo#ulation inter&eren$e:

To ol'e t2i pro/lem; multiple 2ar#ware operation are re?uire#: 3ue to&re?uen$y reue in t2e network operation; #i&&i$ult pro/lem lo$ation; an#multiply &aulty $ell; a pe$ial team i eta/li2e# to ol'e t2i pro/lem?ui$kly:

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T2e i#le /urt aut2enti$ation i tranmitte# t2rou+2 t2e "MT:

%2e$k t2e #ata o& inter&eren$e /an# le'el = to le'el 8 a$$or#in+ to t2e tra&&i$meaurement: %2e$k w2et2er t2e inter&eren$e /an# &ollow ome rule an#

w2et2er t2e inter&eren$e /an# are relate# to time; tra&&i$; weat2er; an# $elllo$ation: %2e$k w2et2er imilar inter&eren$e /an# pro/lem ue# to o$$ur:.inally; per&orm $ompre2eni'e analyi:

I& t2e inter&eren$e /an# perit; t2e inter&eren$e /an# i en2an$e# wit2 t2etra&&i$ in$reae; or t2e external BTS inter&eren$e i ex$lu#e# /y repla$in+ t2e&re?uen$ie; you $an in&er t2at it i internal BTS inter&eren$e: Take t2e&ollowin+ meaure>

%2e$k w2et2er t2e TR4 or %om/inin+ an# 3itri/ution 1nit (%31) &ault$aue t2e inter7network inter&eren$e /y /lo$kin+ an# repla$in+ /oar#:

%2e$k w2et2er t2e Cumper are $onne$te# to t2e $a/inet top outlet an# &ee#erproperly: I& t2e port #o not mat$2; t2e &ront en# $ir$uit o& t2e BTS may /e

unta/le: In t2i $ae; t2e pontaneou 'i/ration may +enerate to /rin+inter&eren$e to t2e internal /an#wi#t2:

%2e$k w2et2er t2e antenna ytem +enerate t2e pai'e intermo#ulation /y#ia/lin+ ome T%9 TR4 or ex$2an+in+ antenna ytem: In t2i $ae; you$an #etermine w2et2er t2e inter&eren$e i $aue# /y antenna intermo#ulation:

T2e inter&eren$e i eliminate# mainly t2rou+2 R. optimization: .or #etail;ee t2e GSM Interference Analysis Guide:

GSM Interference

Analysis Guide 02


None:


T2ree type o& alarm nee# to /e o/er'e#> antenna alarm; TR4 alarm; an#BTS $lo$k alarm:

I& any one o& t2e &ollowin+ alarm i reporte#; ee t2eBSS Alarm Reference&or pe$i&i$ pro$ein+ met2o#:

!larm I3 an# Name



Power %ontrol; 3T4


None:


None:

.2.' est ool an" Reco$$en"ations

T2e TMS t2at i a$$epte# /y t2e in#utry an# wi#ely ue# er'e a t2e tettool: T2e #ri'e tet i re?uire# &or t2e $ell wit2 low RxQuality: T2e lowRxQuality in ome $ell or BTS $an /e #ete$te# an# ol'e# /y #ri'e tet:

.2.7 Reco$$en"ations +or Con-gurationan" est

.or network $on&i+uration; ee t2e latet GSM BSC6000 PerformanceParameter Baseline (V900R008 V!"0: T2e $on&i+uration are per&orme#

a$$or#in+ to #i&&erent $enario: 2en t2e RxQuality i low; you nee# to$2e$k t2e #ata $on&i+uration t2at i +reatly #i&&erent &rom t2e parameter/aeline:

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( R)*ualit! #pti$i%ationCases

(.1 0o3 R)*ualit! in 8en!aIn Kenya; t2e $on&i+uration o& exitin+ network 2a multiple ite in S@E@E@$on&i+uration; w2i$2 i 'ery lar+e: T2e entire network ue = R. &re?uen$y2oppin+: T2e RxQuality i not ati&a$tory: !$$or#in+ to $2e$k reult; t2eexitin+ network ue t2e latet BS% 'erion: T2e power $ontrol parameter;2owe'er; are et a$$or#in+ to e$on# +eneration power $ontrol al+orit2mrat2er t2an t2e parameter $on&i+uration /aeline: !&ter t2e parameter are et/y uin+ t2e t2ir# +eneration power $ontrol al+orit2m; t2e proportion o&

RxQualtiy -H= i in$reae# /y 5L $ompare# to t2at /y uin+ t2e e$on#+eneration al+orit2m:

(.2 nabling I"le Burst CausingInter+erence Increase an" 0o3 R)*ualit!

!&ter t2e ite i wappe#; t2e network ?uality i #e$reae# /y =L to



5In+or$ation Fee"bac,

5.1 &/ est 0og o+ Fault! CellT2e $ell in&ormation ta/le in :$el &ormat o& t2e TMS tet i ent /a$k wit2t2e lo+:

5.2 Re9uire$ents +or )isting et3or,Con-guration Data an" ra4c&easure$ent

T2e latet #ata $on&i+uration an# en+ineerin+ parameter lit on t2e networkare pe$i&ie#: Pro'i#e t2e tra&&i$ meaurement $ounter o& $ontinuou two#ay: T2e tra&&i$ meaurement $ounter are #e$ri/e# a &ollow>

MR Meaurement Re$ei'e Quality Meaurement per TR4

MR Meaurement Inter&eren$e Ban# Meaurement per TR4

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15 gsm bss network kpi (rxquality) optimization manual.doc

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