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GSM Radio Network Optimization

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Optimization and KPI
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  Table of Contents Chapter 8 GSM Radio Network Optimization................................................................................2 8.1 Network Optimization Procedure..........................................................................................28.2 Network Optimization Tools..................................................................................................38.2.1 Test MS......................................................................................................................38.2.2 Drive Test Sotware....................................................................................................!8.2.3 Si nalin #nal$zer.....................................................................................................%8.2.! Network Optimization Sotware..................................................................................&8.3 Network Perormance 'valuation.........................................................................................(8.3.1 DT..............................................................................................................................(8.3.2 )*T...........................................................................................................................88.3.3 Network Operation +nde,es.......................................................................................88.! Traic Statistics +nde, #nal$sis............................................................................................-8.!.1 eneral #nal$sis Met/od.........................................................................................108.!.2 i / )all Drop ate #nal$sis...................................................................................108.!.3 i / T) )on estion ate #nal$sis.......................................................................128.!.! i / SD)) )on estion ate #nal$sis..................................................................1!8.!.% ow andover Success ate #nal$sis....................................................................1&8.% Network Pro4lem Solutions................................................................................................188.%.1 )overa e Pro4lems.................................................................................................188.%.2 +ntererence Pro4lems.............................................................................................318.%.3 )all Drop Pro4lems..................................................................................................!18.%.! andover Pro4lems.................................................................................................%38.%.% )on estion Pro4lems..............................................................................................&08.%.& Ot/er Pro4lems........................................................................................................&%  )/apter 8 SM adio Network Optimization5or internal use onl$ Chapter 8 GSM Radio Network Optimization adio network optimization aims to improve network perormance and ma,imize t/e4eneit o t/e e,istin network resources t/rou / parameter collection6 data anal$sis6parameter ad7ustment6 and necessar$ tec/nical means.5rom t/e perspective o carriers6 t/e$ /ope to coni ure t/e s$stem rationall$6 utilizenetwork resources to t/e ma,imum6 en/ance network economic 4eneit6 and reduceoperation costs t/rou / network optimization. 5rom t/e perspective o users6 t/e$/ope to et satisactor$ telecommunication services in terms network sta4ilit$6 speec/ualit$6 and so on. T/ereore6 t/e core task o radio network plannin and optimizationis to seek a 4alance amon covera e6 capacit$6 and ualit$ 4ased on rationalinvestment and t/e limited reuenc$ resources6 t/us ac/ievin t/e 4est rate o investment return. 8.1 Network Optimization ro!ed re 5i ure 1.1 s/ows t/e network optimization procedure. #i$ re 1.1 Network optimization procedureereunder details t/e procedure9 201!:10:2!;#<'+ )onidentialPa e26 Total&-  )/apter 8 SM adio Network Optimization5or internal use onl$  Network inormation acuisition=ou are reuired to conirm t/e actual en ineerin parameters and networkparameters6 surve$ t/e local radio environment and /ot:traic spots6 andunderstand customer reuirement.  Data collection=ou are reuired to collect OM) traic statistics data and alarm data> drive testdata6 and t/e o47ective relection o MS.  Data anal$sis=ou are reuired to anal$ze network perormance6 network parameters6 andOM) traic statistics usin network optimization tools.  Network tunin =ou are reuired to tune en ineerin parameters and network unctionalparameters.  Network optimization report # network optimization report must include optimization measures6 ulillednetwork perormance inde,es6 and su estions or network development. 8.2 Network Optimization Tools 8.2.1 Test MS Test MS is a dail$ must or en ineers to perorm network test. T/e test MS candispla$ t/e service cell o a mo4ile telecommunication network and t/e si, nei /4or cells. +t can also 4e used to test network parameters. T/e test MS can 4e connectedto a computer6 so it can collect and anal$ze data wit/ t/e /elp o drive test sotware.T/e unctions o a S#'M test MS are listed 4elow9  ?iew t/e +MS+ o t/e S+M card  Scan @))T/e S#'M test MS can scan t/e @))6 and it will provides t/e ,lev and@S+) o t/e scanned @)) in eac/ cell.  ?iew network parametersT/e S#'M test MS can displa$ network parameters o t/e service cell o andt/e si, nei /4or cells w/en it is idle or in conversation state.  5orced cell selection 201!:10:2!;#<'+ )onidentialPa e36 Total&-  )/apter 8 SM adio Network Optimization5or internal use onl$T/e test MS can 4e orced to reselect t/e desi nated cell or dialin test and/andover test.  5orced /andover T/e test MS can 4e orced to /and over to t/e desi nated cell to anal$ze w/et/er t/e /andover is normal durin conversation.  5reuenc$ selection  PS unction test AT/e MSs o S#'M OT-& support t/is unctionB 8.2.2 %ri&e Test Software  #NT6 T'MS6 and S#5)O are t/e SM drive test sotware in common use. enerall$6t/e drive test sotware consists o two parts9 ore round data collection sotware and4ack round data anal$sis sotware. '. #ore$ro nd %ata Colle!tion Software T/e ore round data collection sotware is mainl$ responsi4le or collectin t/e uplinkand downlink data at t/e ;m interace o t/e SM mo4ile network. + t/e @TSs andt/e landorm map o t/e test areas are imported6 t/e track o t/e drive test6 t/e radioparameters o eac/ test point6 and t/e main inormation o t/e service cell6 nei /4or cell6 and t/e ;m interace can 4e o4served.T/e unctions o ore round data collection sotware are listed 4elow9  Test unctionsTest unctions include call test6 scan test6 call intererence test6 dou4le:networks$nc/ronization test6 dialin record test6 dual:4and comparison test6 and MSselection test.  Topical testTopical test is responsi4le or orced /andover and reuenc$ lockin AcallB test6@)) reuenc$ lockin Astand4$B test6 orced location update test6 and 4andlockin test.  +ntererence test+ntererence aims to locate t/e @)) same:reuenc$ and nei /4or reuenc$intererence and T) nei /4or reuenc$ intererence wit/in t/e same networkin time.  Parameter collectionT/e ield stren t/ o t/e service cell and t/e nei /4or cells6 4it error ratio6 rameerror rate6 and various radio parameters o t/e cell need to 4e collected.  eo rap/ic navi ation 201!:10:2!;#<'+ )onidentialPa e!6 Total&-
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