14 GSM BSS Network KPI (Call Setup Time) Optimization Manual.doc

8/11/2019 14 GSM BSS Network KPI (Call Setup Time) Optimization Manual.doc

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GSM BSS Network KPI (Call Setup Time) Optimization Manual INTERNA

Product Name Confdentiality Level

G!BSC INTERNA

Product Version Total "# pa$e%

GSM BSS Network KPI (Call Setup Time)

Optimization Manual

&or internal u%e onl'

Prepared by an$ Cun*ie (I+, --..//0.) 1romte GSM23MTS Network

Per1orman4e Re%ear4 +ept5

Date "--67."7"8

Reviewed by Date ''''7mm799

Reviewed by Date ''''7mm799

Approved by Date ''''7mm799

Huawei Technologies Co., Ltd.


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All rights reserved


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Contents

1 Overview o te Call !etup "ime######################################$

.5. +e1inition o1 te Call Setup Time5555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555:

.5" Re4ommen9e9 &ormula%555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555:

.5! Si$nalin$ Pro4e9ure an9 Mea%urement Point%555555555555555555555555555555555555555555555555555555555555555555555555#

% &n'uencin( )actors#########################################################*

"5. Pro4e9ure Con1i$uration555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555/

"5" Parameter Settin$%5555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555/

"5! Routin$555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555/

"58 ;ar9ware< Tran%mi%%ion< Co=era$e< an9 Inter1eren4e5555555555555555555555555555555555555555555555555 555555555.-

+ Analysis Process and Optimi,ation -etod#####################11

!5. Anal'%i% Pro4e%%5555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555 5555..

!5" Pro4e%% +e%4ription555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555."!5"5. Pro4e9ure Con1i$uration5555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555."

!5"5" Parameter Settin$555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555.8

!5"5! Routin$5555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555.#

!5"58 ;ar9ware< Tran%mi%%ion< Co=era$e< an9 Inter1eren4e555555555555555555555555555555555555555555555 5555.6

. "est -etod#################################################################%/

0 Optimi,ation Cases#######################################################%1

05. on$ Call Setup Time +ue to on$ Perio9 o1 A%%i$nment Comman9 +eli=er'555555555555555555".

05.5. Pro>lem +e%4ription5555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555".

05.5" Pro>lem Anal'%i%555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555 555555555".

05.5! Su$$e%tion an9 Summar'55555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555".

05" on$ Call Setup Time +ue to Reportin$ o1 Two Cla%%mark Can$e Me%%a$e%5555555555555555555""

05"5. Pro>lem +e%4ription5555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555""

05"5" Pro>lem Anal'%i%555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555 555555555""

05"5! Su$$e%tion an9 Summar'55555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555"!

05! on$ Call Setup Time +ue to Callin$ an9 Calle9 MS% 3n9er +i11erent MSC%5555555555555555555"!

05!5. Pro>lem +e%4ription5555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555"!

05!5" Pro>lem Anal'%i%555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555 555555555"!

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05!5! Su$$e%tion an9 Summar'55555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555"!

058 on$ Call Setup Time +ue to In4on%i%ten4' in Si$nalin$ Pro4e9ure%555555555555555555555555555555555"8

0585. Pro>lem +e%4ription5555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555"8

0585" Pro>lem Anal'%i%555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555 555555555"8

0585! Su$$e%tion an9 Summar'55555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555"0

$ &normation )eedbac###################################################%$

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Revision Reor!

Date Revision

Can(e Description Autor

"--67."7"8 ?-5! +ra1t 4omplete95 an$ Cun*ie

"--/7.7"- ?.5- Ti% 9o4ument i% mo9i1ie9a44or9in$ to re=iew 4omment%5

an$ Cun*ie

Re"erenes

!N Document Autor Date

. GSM BSS Network KPI(Call Setup Time) Ba%eline

@u en "--#7-67"8

" GSM Call Setup Time(CS) Anal'%i% Report

a Suan$liu< iiaomen$< an$ i9ae% te meto9 o1 optimizin$ te 4all %etup time5

Acronyms and AbbreviationsMOC Mo>ile Ori$inate9 Call

MTC Mo>ile Terminate9 Call

PSTN Pu>li4 Swit4e9 Telepon' Network

TMSI Temporar' Mo>ile Station I9entit'

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1 Overview o te Call !etup"ime

1#1 Defnition o te Call !etup "imeTe 4all %etup time in9i4ate% te mean time 1rom te ori$inatin$ o1 a 4all >' a%u>%4ri>er to te %etup o1 te 4all5 A lon$ 4all %etup time will %e=erel' a11e4tte u%er eperien4e5 Tere1ore< te 4all %etup time i% one o1 te KPI% tatoperator% are mo%t 4on4erne9 a>out5

1#% Recommended )ormulasTe 4all %etup time i% o>taine9 trou$ 9ri=e te%t%5 It re1er% to te time 1or anMS to %et up an en97to7en9 4all trou$ ra9io network eDuipment5 Tere aretree t'pe% o1 4all %etup time,

MS to PSTN, a=era$e inter=al >etween te tran%mi%%ion o1 te Cannel

ReDue%t me%%a$e 1rom te MS an9 te MS% re4eption o1 te Alertin$me%%a$e %ent 1rom te MSC

MS to MS, a=era$e inter=al >etween te tran%mi%%ion o1 te Cannel

ReDue%t me%%a$e 1rom te 4allin$ MS an9 te 4allin$ MS% re4eption o1te Alertin$ me%%a$e %ent 1rom te MSC

PSTN to MS, a=era$e inter=al >etween MS% re4ei=in$ o1 te pa$in$me%%a$e 1rom te MSC an9 %en9in$ o1 te Alertin$ me%%a$e 1rom teMS to te MSC

Note tat te 4all %etup time i% te a=era$e %etup time o1 multiple %u44e%%1ul4all%5 ou nee9 to 4on9u4t multiple 9ialin$ te%t%5

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1#+ !i(nalin( Procedure and-easurement Points

Figure 1.1 Mea%urement point% in an MOC %etup pro4e9ure (wit te earl'a%%i$nment pro4e9ure a% an eample)

BTS BSC

Channel Request

Channel Required

Channel Active

Channel Active

ACK

Immediate Assignment Command

SABM

UA

EstablishedIndication

CR

CC

CM Service Accepted

Setup

Call roceeding

Assignment

RequestChannel Active

Channel Active

ACK

Assignment Command

SABM

UA

Established

Indication

Assignment CompleteAssignment

Complete

A

B

MS

Alerting

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Figure 1.2 Mea%urement point% in an MTC %etup pro4e9ure (wit te earl'a%%i$nment pro4e9ure a% an eample)

MS BTS BSC MSC

Channel Request

Channel Required

Channel Active

Channel Active

ACKImmediate Assignment Command

SABM

UA

Established

Indication

CR

CC

CM Service Accepted

Setup

Call Control

Assignment

RequestChannel Active

Channel Active

ACK

Assignment Command

SABM

UA

Established

Indication

Assignment Complete

Assignment

CompleteAlerting

C

!

paging

aging Commandaging Required

In&i$ure .5.an9 &i$ure .5",

A i% te time wen te MS %en9% a Cannel ReDue%t me%%a$e5 B i% te time wen te MS re4ei=e% te Alertin$ me%%a$e 1rom te MSC5

C i% te time wen te MS re4ei=e% a pa$in$ me%%a$e5

+ i% te time wen te MS %en9% an Alertin$ me%%a$e5

In te te%t% o1 MS7to7MS or MS7to7PSTN 4all%< te 4all %etup time i% eDual toB minu% AF in te te%t% o1 PSTN7to7MS 4all%< te 4all %etup time i% eDual to +minu% C5

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%&n'uencin( )actors

%#1 Procedure Conf(urationTe %etup o1 eiter an MOC or an MTC in=ol=e% man' pro4e9ure% %u4 a%autenti4ation an9 4iperin$ mo9e %ettin$ an9 relate% to multiple NE% %u4 a%te MSC< BSC< BTS< an9 MS5 Tere1ore< te 4on1i$uration o1 te 4all

pro4e9ure% 9ire4tl' 9etermine% te len$t o1 te 4all %etup time5

%#% Parameter !ettin(s

Te 4all %etup time i% relate9 to te entire pro4e9ure o1 an MOC or MTC< an9tere1ore< man' parameter% 4an a11e4t te 4all %etup time5

Te 1ollowin$ are %ome eample%,

BS-PA-F!AS

"se #$$%Ass !etrans$it Para$eter

a& 'ela( o) #$$%Ass !etrans$itan9 a& Trans$it Ti$es o)#$$%Ass

Pre7pa$in$ 1un4tion< wi4 i% %et on te MSC

#$$ediate Assign$ent *+t.

CSC< wi4 mean% earl' 4la%%mark %en9in$ 4ontrol

Allow !eassign

ate a%%i$nment 1un4tion< wi4 i% %et on te MSC

A%%i$nment 4omman9 optimization

Force ueue #n Assign$ent

T11s/

%#+ Routin(Te network eDuipment o1 9i11erent manu1a4turer% =arie%5 Tere1ore< in te4a%e o1 interworkin$ >etween eDuipment o1 9i11erent manu1a4turer% or 4an$ein routin$< anal'%i% an9 an9lin$ %oul9 >e per1orme9< on te >a%i% o1 9ri=ete%t re%ult%5

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%#. 3ardware4 "ransmission4 Covera(e4and &ntererence

A pro>lem in ar9ware< tran%mi%%ion< 4o=era$e< or inter1eren4e ma' re%ult inan in4rea%e in te 4all %etup time5

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+Analysis Process and

Optimi,ation -etod

+#1 Analysis Process

Figure 1.1 Anal'%i% pro4e%%

Call setup timetoo lon#

Collet t$e test!ata

Is it !ue to a pro%lem

in parameter settin#s&

Is it !ue to a

pro%lem in routin#&

'nalze t$e pro%lem%ase! on t$e si#nalin#

an! !ata on"i#urationan! take proper measures

Is t$e pro%lem

solve!&

n!

*es

*es

*es

*es

No

No

No

Is it !ue to a pro%lem in

proe!ure on"i#uration&

No

Optimize t$e proe!ureon"i#uration an! t$en

veri" t$e optimization

'!+ust t$e parameter

settin#s an! t$enveri" t$e a!+ustment

Is it !ue to a pro%lem in$ar!ware, transmission,

overa#e, or

inter"erene&

Solve t$e pro%lemaor!in# to t$e relate!

optimization manual

*es

No

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+#% Process Description

+#%#1 Procedure Conf(uration

+urin$ te %etup o1 a 4all< %ome pro4e9ure% are optional< %u4 a%autenti4ation< 4iperin$ mo9e %ettin$< an9 TMSI reallo4ation< an9in9epen9ent o1 ea4 oter5 Tere1ore< 1lei>le 4on1i$uration o1 te pro4e9ure%a44or9in$ to operator% reDuirement% i% appli4a>le5

On te ei%tin$ network%< 4iperin$ i% $enerall' ena>le9< an9 autenti4ationan9 TMSI reallo4ation are ena>le9 on a proportion (tat i%< .- to "-) o1MSC%5

Autentication

&or a !G %u>%4ri>er< 9urin$ te autenti4ation wen te mo>ile a44e%%e% aGSM network< te MSC %en9% an autenti4ation me%%a$e to te mo>ile5 Teme%%a$e 4ontain% te RAN+< A3TN< an9 RES< an9 i% lon$er tan "! >'te%5Tere1ore< te AP+m nee9% to 9i=i9e te me%%a$e into two an9 9eli=er tem%eparatel'5

Tu%< in a GSM network< a !G %u>%4ri>er reDuire% "8- m% to ":- m% moretan a "G %u>%4ri>er in term% o1 te 4all %etup time5

In a99ition< wen te BSC a%%i$n% an AMR 4annel< te A%%i$nmentComman9 me%%a$e will >e lon$er tan "! >'te% i1 te 1reDuen4' oppin$ MAi% too lon$5 Ti% re%ult% in "8- m% to ":- m% more in te 4all %etup time5

Ciperin( -ode !ettin(+urin$ te %etup o1 an MOC< i1 te 4iperin$ mo9e %ettin$ pro4e9ure i% notper1orme9< te MS 9oe% not %en9 a Setup me%%a$e until it re4ei=e% a CMSer=i4e A44epte9 me%%a$e 1rom te MSCF i1 4iperin$ i% to >e ena>le9eimplemente9 at MS% tat %upport multi>an9< multi%lot< an9 ?oi4e Group Call

Ser=i4e (?GCS)5

In pra4ti4e< 4ompetitor% $enerall' 9o not ena>le 4la%%mark enDuir' in teirCN% >ut u%e ECSC5 Tu%< te AP+m %i$nalin$ intera4tion on te airinter1a4e i% re9u4e9< an9 te 4all %etup time i% %ortene95 ;uawei< owe=erle% 4la%%mark enDuir' in all it% CN% >' 9e1ault5 In a99ition< te 4la%%markenDuir' i% not u%er74on1i$ura>le5 It 4an >e 4ontrolle9 >' te relate9 re%er=e9%o1tware parameter onl'5

Tere1ore< wen ECSC i% ena>le9 at >ot 4ompetitor% BSS an9 ;uawei BSSut ma' in4rea%e te a44e%% 9ela' o1 MS%an9 te loa9 o1 te BSC5

It i% re4ommen9e9 tat ti% 1un4tion >e 9i%a>le95

a& 'ela( o) #$$%Ass !etrans$itan9 a& Trans$it Ti$es o)

#$$%Ass

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Te%e two parameter% %pe4i1' te maimum 9ela' o1 te imme9iatea%%i$nment retran%mi%%ion an9 te maimum num>er o1 imme9iatea%%i$nment retran%mi%%ion% re%pe4ti=el'5

@en te network Dualit' i% poor< an imme9iate a%%i$nment me%%a$ema' nee9 to >e retran%mitte95 I1 te%e parameter% are %et to i$ =alue%e %ortene9 i1 te

pre7pa$in$ 1un4tion i% ena>le95It i% re4ommen9e9 tat ti% 1un4tion >e ena>le95

#$$ediate Assign$ent *+t.

Te 4annel a4ti=ation an9 imme9iate a%%i$nment 4omman9% are %ent atte %ame time to a44elerate te %i$nalin$ pro4e%%in$< tu% impro=in$ tere%pon%e %pee9 o1 te network5

It i% re4ommen9e9 tat ti% 1un4tion >e ena>le95

CSC

Ti% parameter %pe4i1ie% weter te MS% in a 4ell u%e earl' 4la%%mark%en9in$5

I1 ti% parameter i% %et to 0es< a1ter a %u44e%%1ul imme9iatea%%i$nment< te MS %en9% a99itional 4la%%mark in1ormation to tenetwork a% earl' a% po%%i>le5

&or 9ual7>an9 MS%< i1 ti% parameter i% %et to o< te MSC %en9% aCla%%mark ReDue%t me%%a$e a1ter te MS report% an E%ta>li%In9i4ation me%%a$e5 Te MS ten report% te Cla%%mark 3p9ateme%%a$e5 Te a44e%% 9ela' o1 te MS i% a11e4te95

Allow !eassign

I1 ti% parameter i% %et to 0es< te BSC initiate% a rea%%i$nment wenre4ei=in$ an a%%i$nment 1ailure me%%a$e o=er te 3m inter1a4e5 Ti%elp% in4rea%e te 4all 4ompletion rate an9 impro=e te JoS o1 tenetwork5 Te %u44e%%1ul rea%%i$nment< owe=er< re%ult% in an in4rea%e inte a44e%% 9ela' o1 MS% an9 te loa9 o1 te BSC5


ate a%%i$nment pro4e9ure

Ti% parameter i% %et on te MSC5 @it te late a%%i$nment 1un4tion< tea%%i$nment 4omman9 i% %ent a1ter alertin$5 Ti% 4an %orten te 4all%etup time5 In te late a%%i$nment pro4e9ure< owe=er< te re4eption o1te Alertin$ me%%a$e 9oe% not ne4e%%aril' in9i4ate te e%ta>li%ment o1 a4all5 Tere1ore< te 4all %etup time i% not mea%ure9 in te late a%%i$nmentpro4e9ure5


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A%%i$nment 4omman9 optimization

I1 1reDuen4' oppin$ i% ena>le9 at ;uawei BTS< te AR&CN% in tea%%i$nment 4omman9 are 9eli=ere9 in te 1orm o1 CAMA >' 9e1ault' a>out "!- m%>e4au%e o1 te a99ition o1 a 9eli=er' perio95

To %orten te 4all %etup time< te AR&CN% 4an >e 9eli=ere9 in te 1ormo1 1reDuen4' li%t %o tat te a%%i$nment 4omman9 4an >e 9eli=ere9 in oneI 1rame5

On li=e network%< te 1reDuen4' li%t mo9e i% re4ommen9e95 &i$ure .5.9e%4ri>e% ow to %et ti% parameter5

Figure 1.1 Settin$ o1 te a%%i$nment 4omman9 optimization parameter

Parameter !ettin( Decreasein te

Delay

A%%i$nment4omman9optimizationparameter

Bit . o1 te 4ell7oriente9 re%er=e9parameter . i% .it map- 4o9in$%4eme

Te a%%i$nment 4omman9 optimization i% in4orporate9 into BSC:---?/--R--6C..B.:6SP.. an9 later relea%e%5

&or %pe4i1i4 4a%e%< %ee 4apter0HOptimization Ca%e%5H

Force ueue #n Assign$ent

@en ti% parameter i% %et to 0es< te BSC put% an a%%i$nmentreDue%t me%%a$e into te a%%i$nment reDue%t me%%a$e Dueue i1 noTC; i% a=aila>le 1or a%%i$nment< or te BSC a%%i$n% a TC; to teMS i1 te TC; i% a=aila>le 1or a%%i$nment5

I1 ti% parameter i% %et to o< te =alue o1 Dueuin$ allowe9 in9i4atorin te a%%i$nment reDue%t me%%a$e i% -< wi4 mean% tat tea%%i$nment reDue%t me%%a$e 4annot >e put into te a%%i$nment reDue%t

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me%%a$e Dueue5 Ten< te 4annel reDue%t i% re*e4te9 wen no TC; i%a=aila>le 1or a%%i$nment5

Te 9e1ault =alue o1 ti% parameter i% o5

T11s/Ti% parameter %pe4i1ie% te len$t o1 te timer tat i% %tarte9 to wait 1ora 4annel reDue%te9 >' an a%%i$nment reDue%t me%%a$e5 @en te BSCre4ei=e% an a%%i$nment reDue%t >ut no 4annel i% a=aila>le 1ora%%i$nment< te BSC %tart% te Dueuin$ pro4e9ure an9 ti% timer5 I1 te4annel reDue%t i% a44epte9 >e1ore te timer epire%< te timer %top%5 I1te timer epire%< te 4annel a%%i$nment 1ail%5

@en Dueuin$ i% ena>le9< a i$ =alue o1 ti% parameter 9ire4tl' lea9% toa lon$ 4all %etup time5

+#%#+ Routin(

On li=e network%< wen %wappin$ i% per1orme9< te BSC an9 MSC are re79eplo'e9 an9 tu% te 4all routin$ 4an$e%5 Tere1ore< te %etup time o1 inter7MSC 4all% i% a11e4te95 In ti% 4a%e< te%t% %oul9 >e 4on9u4te9< an9 te anal'%i%%oul9 >e per1orme9 on te >a%i% o1 te te%t re%ult% o>taine9 >e1ore an9 a1terte %wappin$5

&or a %pe4i1i4 4a%e< %ee %e4tion05!Hon$ Call Setup Time +ue to Callin$ an9Calle9 MS% 3n9er +i11erent MSC%5H

&i$ure .5. li%t% te eample =alue% o1 9ela' 9urin$ an MS7to7MS 4all ma9e inte la>5 On li=e network%< te 9ela' =alue% are relate9 to te a4tual %ituation%5Te 9ata in &i$ure .5.i% pro=i9e9 onl' 1or re1eren4e5

Figure 1.1 Eample =alue% o1 9ela' 9urin$ an MS7to7MS 4all ma9e in te la>

!i(nalin( o an Out(oin( -!7to7-! Call8Autentication4 Ciperin(4 and "-!& Reallocation5nabled4 9ereas Classmar 5n6uiry Disabled:

RelativeDelay 8;nitiner i% 1ault' or i1 an R& 4a>le i% in4orre4tl' 4onne4te9e4ome% 9i11i4ult< an9 tu% te 4all %etup timein4rea%e%5

&ault% %u4 a% poor tran%mi%%ion Dualit'< in%ta>ilit' o1 tran%port link%etween %wit4e%5 Tu%< te me%%a$e tran%1er 9ela' in4rea%e%an9 4on$e%tion ma' o44ur on te link%5 In %e=ere 4a%e%< route% 4an$e1reDuentl'< wi4 lea9% to in%ta>ilit' an9 4on$e%tion on te link%5 I1 tepre4e9in$ pro>lem o44ur% 9urin$ 4all %etup< te 4all %etup time in4rea%e%5

Te pro>lem 4an >e i9enti1ie9 1rom tra11i4 %tati%ti4%5 &i$ure .5.li%t% tetran%mi%%ion7relate9 alarm% at te BSC5

Figure 1.1 Tran%mi%%ion7relate9 alarm% at te BSC

Alarm &D Alarm Name

.--- AP+ OM &ault

.."#- AP+ Alarm

.."#6 E. o4al Alarm

.."6- E. Remote Alarm

"--6. o%% o1 E.T. Si$nal% (OS)

"--6" o%% o1 E.T. &rame% (O&)

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Co=era$e or inter1eren4e pro>lem% 4an >e i9enti1ie9 1rom te tra11i4 %tati%ti4%or KPI%5 &or eample< te inter1eren4e in1ormation 4an >e o>taine9 on te>a%i% o1 te inter1eren4e >an9 9i%tri>ution in te tra11i4 mea%urement re%ult%5 I1a lar$e proportion o1 inter1eren4e le=el% >elon$ to inter1eren4e >an9% !0< 'ou

4an in1er tat tere i% %tron$ inter1eren4e in te uplink5 To o>tain te 9ownlinkinter1eren4e in1ormation< 'ou 4an per1orm 9ri=e te%t% or anal'ze te tra11i4mea%urement re%ult% tat are relate9 to re4ei=e Dualit'5 Stron$ inter1eren4ea11e4t% te 4all 9rop rate on TC;< te TC; a%%i$nment %u44e%% rate< an9 teS+CC; %etup %u44e%% rate< tu% a11e4tin$ te 4all %etup time5

Te inter1eren4e elimination 4an >e 4la%%i1ie9 into intra7network inter1eren4eelimination an9 inter7network inter1eren4e elimination5 &or 9etail% a>outinter1eren4e elimination< %ee te G-Guide to Eliminating Interference5

I1 a 4o=era$e pro>lem ei%t%< 'ou 4an %ol=e te pro>lem >' u%in$ te meto9%%u4 a% a9*u%tin$ te tilt o1 te antenna< in4rea%in$ te tran%mit power< a99in$repeater%< an9 4an$in$ te 4om>inin$ mo9e5 &or 9etail%< %ee te GSM BSS

Network Performance KPI (Coverage) !timi"ation Manual5

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. "est -etodTe 4all %etup time i% one o1 9ri=e te%t KPI%5 It 4an >e o>taine9 1rom tere%ult% o1 4all Dualit' te%t% or 9ri=e te%t% 1or 4all% >etween MS% or >etween MSan9 PSTN5

Te meto9 i% to per1orm a %ort MOC te%t5 +urin$ te te%t< te inter=al>etween two 4all% i% 0%< ea4 4all la%t% .-%< an9 te inter=al >etween a 4all1ailure an9 te net 4all attempt i% !-%5 Te re4ommen9e9 num>er o1 4all%9urin$ te te%t i% .--5 Te num>er o1 4all% 4an >e 4an$e9 a% reDuire95 +urin$te te%t< te %i$nalin$ on te 3m an9 A inter1a4e% nee9% to >e tra4e95

I1 a =alue o1 4all %etup time i% a>normal< anal'ze te %i$nalin$ to 4e4kweter te a>normal =alue i% 9ue to 1ailure o1 te 1ir%t pa$in$5 I1 te

a>normal =alue i% 9ue to 1ailure o1 te 1ir%t pa$in$< 9o not take ti% =alue intomea%urement o1 te 4all %etup time5 Oterwi%e< take ti% =alue into temea%urement5 Ce4k te %i$nalin$ on te A inter1a4e5 I1 te MSC %en9% twoPa$in$ me%%a$e% 1or one 4all< 'ou 4an in1er tat te 1ir%t pa$in$ 1or te 4all1ail%5

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0 Optimi,ation Cases0#1 Lon( Call !etup "ime Due to Lon(Period o Assi(nment CommandDelivery

0#1#1 Problem Description

A1ter %wappin$ o1 Eri4%%on eDuipment 1or ;uawei eDuipment at a %ite< te 4all%etup time >e4ame lon$er5 It wa% 1oun9 tat te 9eli=er' o1 an a%%i$nment4omman9 1rom ;uawei eDuipment took two or tree perio9% werea% tat

1rom Eri4%%on eDuipment $enerall' took onl' one perio95

0#1#% Problem Analysis

In 1reDuen4' oppin$ mo9e< te BSC:--- 4urrentl' 9eli=er% te AR&CN% inCAMA 1orm trou$ te a%%i$nment 4omman95 CA u%e% te T? 1ormat an9it% len$t i% 1ie9l' .# >'te%< an9 MA u%e% te T? 1ormat an9 it% len$t i% !.- >'te%5 I1 an AMR 4annel i% to >e a%%i$ne9 (4o9e9 in T? 1ormat in te4omman9)< te len$t o1 te a%%i$nment 4omman9 in4rea%e% >' 86 >'te%5Tu%< te a%%i$nment 4omman9 i% lon$er tan "! >'te%5 Tere1ore< at teAP+m< te a%%i$nment 4omman9 i% 9i=i9e9 1or 9eli=er'5 Be1ore te%wappin$< owe=er< te AR&CN% are 9eli=ere9 in te 1orm o1 1reDuen4' li%te 9eli=ere9 wit one 1rame5

0#1#+ !u((estion and !ummary

@en %ettin$ te a%%i$nment 4omman9 optimization parameter< wi4 i%a=aila>le onl' wen 1reDuen4' oppin$ i% ena>le9 in a 4ell< at te BSC< notetat,

I1 ti% parameter i% %et to CAA< te ori$inal ;uawei AR&CN 9eli=er'

1orm i% retaine95

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I1 ti% parameter i% %et to Fre3uenc( List< te 4o9e9 AR&CN% 1or

1reDuen4' oppin$ will >e 9eli=ere9 in te 1orm o1 1reDuen4' li%t5Tere1ore< te a%%i$nment 4omman9 will >e 9eli=ere9 in one perio9< tu%%ortenin$ te 4all %etup time5

0#% Lon( Call !etup "ime Due toReportin( o "wo Classmar Can(e-essa(es

0#%#1 Problem Description

A1ter %wappin$ 1or ;uawei eDuipment at a %ite< te 4all %etup time >e4ame

lon$er5

0#%#% Problem Analysis

@en ;uawei CN i% u%e9< an a99itional Cla%%mark Can$e me%%a$e i%reporte9 9urin$ te 4all %etup pro4e9ure i1 CSCi% %et to 0es5 Te rea%on i%tat te 4la%%mark enDuir' pro4e9ure i% ena>le9 >' 9e1ault in ;uawei CN5&i$ure .5. %ow% te 9i11eren4e in te %i$nalin$ pro4e9ure >e1ore an9 a1ter te%wappin$5

Figure 1.1 Cla%%mark enDuir' pro4e9ure ena>le9 a1ter te %wappin$

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0#%#+ !u((estion and !ummary

To a=oi9 te pre4e9in$ pro>lem< %et CSCto 0esan9 C "+date *+ti$i4eT(+eto 2< or 4oor9inate wit te CN to 9i%a>le 4la%%mark enDuir' at te CN5

0#+ Lon( Call !etup "ime Due to Callin(and Called -!s ;nder Di=erent -!Cs

0#+#1 Problem Description

A1ter %wappin$ o1 %ome BSC in 4ountr' R< te 9ri=e te%t re%ult% in9i4ate9 tatte 4all %etup time wa% a>out !e1ore te %wappin$5Te 4all %etup time i% one o1 te a44eptan4e 4e4k item% o1 te pro*e4t5 Itre1er% to te 9ela' >etween %en9in$ o1 te Cannel ReDue%t me%%a$e an9re4eption o1 te Alertin$ me%%a$e5

0#+#% Problem Analysis

A% in9i4ate9 >' te parameter 4e4k re%ult< te parameter% in te network areinerite9 1rom te pre=iou% network5 Tere1ore< te parameter% relate9 to te4all %etup time remain un4an$e95

A% in9i4ate9 >' te 4all %i$nalin$ on te TEMS< te 9uration o1 te 4iperin$

mo9e %ettin$ pro4e9ure a1ter te %wappin$ i% te %ame a% tat >e1ore te%wappin$5

Compare9 wit te %i$nalin$ me%%a$e% >e1ore te %wappin$< te %i$nalin$me%%a$e% a1ter te %wappin$ in4lu9e anoter two Pro$re%% me%%a$e%< wi4are pre%ent >etween te A%%i$nment Complete me%%a$e an9 te Conne4tme%%a$e5 Te 9e%4ription in te pro$re%% me%%a$e% i% HCall i% not en97to7en9PMNIS+N< 1urter 4all pro$re%% in1ormation ma' >e a=aila>le in7>an95H A%in9i4ate9 >' me%%a$e% tra4e9 at te CN< a1ter te %wappin$< tou$ te 4alle9num>er un9er te te%t i% te %ame a% tat >e1ore te %wappin$< te te%t 4all i%an inter7MSC one5 Tat i% >e4au%e te 4allin$ MS i% 4ontrolle9 >' ;uaweiMSC werea% te 4alle9 num>er remain% un9er it% ori$inal MSC5

0#+#+ !u((estion and !ummary+urin$ te 9ri=e te%t on %ite a1ter te %wappin$< te 4alle9 num>er wa% te%ame a% tat >e1ore te %wappin$< >ut te 1a4t tat te 4allin$ MS an9 te4alle9 num>er were un9er 9i11erent MSC% wa% not noti4e95 Tere1ore< wen4e4kin$ 4on%i%ten4' >etween te%t 4on9ition% >e1ore an9 a1ter %wappin$< pa'attention to %u4 i99en 4an$e%5

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0#. Lon( Call !etup "ime Due to&nconsistency in !i(nalin( Procedures

0#.#1 Problem Description

A1ter %wappin$ 1or ;uawei eDuipment at a %ite< te 4all %etup time >e4amelon$er5

0#.#% Problem Analysis

Te 4ompari%on >etween te 4all %etup %i$nalin$ pro4e9ure% >e1ore %wappin$an9 to%e a1ter %wappin$ %oul9 >e per1orme95 I1 te 4all %etup a1ter %wappin$in4lu9e% more pro4e9ure% tan tat >e1ore %wappin$< remo=e tem5 Take teGP %wappin$ in Ben$al a% an eample5&i$ure .5.%ow% te 9i11eren4e>etween te %i$nalin$ pro4e9ure% >e1ore an9 a1ter te %wappin$5

Figure 1.1 GPRS %u%pen%ion pro4e9ure ena>le9 a1ter te %wappin$

A% %own in &i$ure .5.etween te %i$nalin$ pro4e9ure% wa%te pre%en4e o1 a GPRS %u%pen%ion pro4e9ure in te te%t a1ter te %wappin$5Te pre%en4e o1 ti% pro4e9ure i% relate9 to weter te MS in te te%t a%per1orme9 GPRS atta45

A44or9in$ to !GPP TS 885.-6< a% %own in&i$ure .5"< te MS %en9% a GPRSSu%pen%ion ReDue%t me%%a$e to %u%pen9 PS %er=i4e%< re$ar9le%% o1 weterte MS a% an' PS %er=i4e in pro$re%%5

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Figure 1.2 GPRS %u%pen%ion pro4e9ure 9e%4ri>e9 in te proto4ol

0#.#+ !u((estion and !ummary

&or CS 4all %etup time te%t< te GPRS %u%pen%ion pro4e9ure %oul9 >eremo=e95 To remo=e ti% pro4e9ure< 4an$e te relate9 %ettin$ o1 te mo>ile5

Te 1ollowin$ are two eample%,

On a NOKIA N#! mo>ile< %et ToolsL SettingsL ConnectionL Pac5et

dataL Pac5etdataconnL 6henneeded5

On a Son' Eri4%%on K#/- mo>ile< %et SettingsL Connectivit(L 'ata

co$$unicationL Pre)erredserviceL CSonl(5

Te GPRS %u%pen%ion pro4e9ure i% alwa'% pre%ent in te te%t a1ter %wappin$5I1 ti% pro4e9ure i% not or %el9om pre%ent in te te%t >e1ore %wappin$< ti%

pro4e9ure 4an >e remo=e9 to re9u4e te 9ela'5

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$ &normation )eedbacTe 1ollowin$ in1ormation i% reDuire9,

+ata 4on1i$uration 1ile in 59at 1ormat

o$ 1ile% an9 4ompari%on 9ata o>taine9 1rom 9ri=e te%t%

Settin$% on te MSC< %u4 a% pre7pa$in$ an9 late a%%i$nment

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14 GSM BSS Network KPI (Call Setup Time) Optimization Manual.doc

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