AMDOCS_Optimization Guidelines for Accessibility v1

NSN

NSN

Optimizatio

Optimizatio

n

n

Guidelines for CS and

Guidelines for CS and

PS KPIs

PS KPIs

CS and PS Accessibility

CS and PS Accessibility

28

28

thth

 _{an! 2"#$}

 _{an! 2"#$}

CS and PS Accessibility

CS and PS Accessibility

•

•

_{KPI Formula}

_{KPI Formula}

•

•

_{RRC Setup & Access Failures}

_{RRC Setup & Access Failures}

•

Call Setup Success &ate 'CSS&(

Call setup success Rate %CSSR covers all t'e steps from

t'e initial RRC connection re(uest from t'e )* to t'e

net+or,- t'rou.' t'e RRC setup p'ase and t'e RAB setup

p'ase- and until user data is startin. to .et transferred/

0

_{For CS- t'e Call setup success rate CSSR is essentially}

0

_{RRC Setup & Access Success  RAB Setup & Access Success}

For PS Session setup success

0

_{Poor CSSR could 2e a result of} 

0

_{Poor covera.e or dominance or interference issues in Radio}

interface

0

_{Capacity issues in Radio or Iu2 interface}

)*

RRC6 Connection Re(uest

RRC6 RRC Connection Re(uest Setup

RRC6 RRC Connection Completed

RRC6 Initial 7irect 4ransfer cm service re(uest

RA8AP6 Initial )* 9essa.e 7IR*C4 4RA8SF*R %Call Proceedin.

RA8AP6 RAB Assi.nment Re(uest

RRC6 Radio Bearer Set:up

RRC6 Radio Bearer Setup Complete

RA8AP6 RAB Assi.nment Response 7IR*C4 4RA8SF*R %Alertin.

B4S

R8C

C8

7IR*C4 4RA8SF*R %Connect

7IR*C4 4RA8SF*R %Connect Ac,no+led.e RAB Connection Access p'ase

R8C +aits reply from )*

Call Set: up Success Rate Call Set: up 4ime

)efinition of Accessibility 'CSS&(

RRC Connection Access p'ase

R8C +aits reply from )*

RRC Connection Setup p'ase

Resource Reservation in R8C- B4S- 4ransmission

RAB Connection Setup p'ase

KPI +ormula

CS Accessibility

0

_{KPI Formula 6 RRC Setup & Access Success  RAB}

Setup & Access Success %R8C;<#=>2 ?==@

1## 

sum%9C;C8;CALL;A44S : 9C;C8;CALL;FAILS  94C;C8;CALL;A44S : 94C;C8;CALL;FAILS  *9*RD*8CE;CALL;A44S : *9*RD*8CE;CALL;FAILS : RRC;ACC;R*L;*9*RD*8CE : RRC;ACC;R*L;9;C8 : RRC;ACC;R*L;94;C8  C*LL;)P7A4*;S)CC;CS;CALL

:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: sum%9C;C8;CALL;A44S  94C;C8;CALL;A44S  *9*RD*8CE;CALL;A44S : RRC;A44;R*P;9;C8 : RRC;A44;R*P;94;C8 : RRC;A44;R*P;*9*RD*8CE : RRC;ACC;R*L;*9*RD*8CE : RRC;ACC;R*L;9;C8 : RRC;ACC;R*L;94;C8 : RRC;C88;S4P;R*;*9*RD;CALLC*LL;)P7A4*;A44;CS;CALL



sum%RAB;ACC;C9P;CS;IC*

:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: sum%RAB;S4P;A44;CS;IC*

KPI +ormula

PS Accessibility

0

_{KPI Formula 6 RRC Setup & Access Success  RAB}

Setup & Access Success %R8C;<GHe ?==@

1## 

sum%9C;I84*R;CALL;A44S : 9C;I84*R;CALL;FAILS  9C;BACKD;CALL;A44S : 9C;BACKD;CALL;FAILS  94C;I84*R;CALL;A44S : 94C;I84*R;CALL;FAILS 

94C;BACKD;CALL;A44S : 94C;BACKD;CALL;FAILS  9C;5ID5;PRIR;SID8;A44S :

9C;5ID5;PRIR;SID8;FAILS  94C;5ID5;PRIR;SID8;A44S : 94C;5ID5;PRIR;SID8;FAILS :

RRC;ACC;R*L;I84*RAC4I* : RRC;ACC;R*L;9;BACKDR)87 : RRC;ACC;R*L;9;5ID5;PR;SID8 : RRC;ACC;R*L;9;I84*RAC4I* : RRC;ACC;R*L;94;BACKDR)87 : RRC;ACC;R*L;94;5ID5;PR;SID8 :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

sum%9C;I84*R;CALL;A44S  9C;BACKD;CALL;A44S  9C;5ID5;PRIR;SID8;A44S  94C;I84*R;CALL;A44S  94C;BACKD;CALL;A44S  94C;5ID5;PRIR;SID8;A44S :

RRC;A44;R*P;I84*RAC4I* : RRC;A44;R*P;9;I84*RAC4I* : RRC;A44;R*P;9;5ID5;PR;SID8 : RRC;A44;R*P;9;BACKDR)87 : RRC;A44;R*P;94;BACKDR)87 : RRC;A44;R*P;94;5ID5;PR;SID8 : RRC;ACC;R*L;I84*RAC4I* : RRC;ACC;R*L;9;BACKDR)87 : RRC;ACC;R*L;9;5ID5;PR;SID8 : RRC;ACC;R*L;9;I84*RAC4I* : RRC;ACC;R*L;94;BACKDR)87 : RRC;ACC;R*L;94;5ID5;PR;SID8  sum%RAB;ACC;C9P;PS;I84*RRAB;ACC;C9P;PS;BACKD ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: sum%RAB;S4P;A44;PS;I84*RRAB;S4P;A44;PS;BACKD

+ailure analysis for lo. CSS&/PSS& cells

RRC- RAB Setup- PS Setup Failure due AC

RRC- RAB- 5SPA Setup

Performance KPIcounters

Follo+:)p

Ees 8o  Air Interface RRC- RAB Setup- PS Setup Failure due

B4S

Ees 8o

B4S

RRC- RAB Setup- PS Setup Failure due Iu2

Ees 8o

Iu2

RRC- RAB Setup- PS Setup Failure due R8C- 79C)

Ees

R8C

RRC- RAB Setup failure due to FroJen B4S

8o

Ees

+ailure and abnormal release causes

4'e failure and a2normal release causes for RRC and RAB p'ases are

presented in t'e ta2les 2elo+6

 In t'is case- RRCRAB p'ase may fail due to left:'and side failure reason- 2ut instead of t'at failure counter t'e R8C internal failure counter is updated/

&&C Setup and Access +ailures

&&C setup failure causes

0

_{RRC setup failure causes 6}

1

5andover Control Fails %R8C;""1Ga

"

 Admission Control Fails %R8C;""1Ma

>

B4S Fails %R8C;""1=a

$

4ransport Fails %R8C;"""#a

<

R8C Fails %R8C;"""1a

H

FroJen B4S Fails %R8C;""""a

G

Iu2 AAL" Fails %91##1C<>#

M

R84I Fails %91##1C"$G

=

ICS) Fails %91##1CH1M

1/

C'ec, cell po+er load is in mar.inal area or overload area if po+er parameter settin. are correct

from RSRA8#HG RSRA8#MH report/

"/

C'ec, po+er related parameter settin.s %PtNcellmaN- 9aN7LPo+ercapa2ility- PtNtar.et

PtNmaN5S7PA etc// *nsure PtNcellmaN O 9aN7LPo+ercapa2ility and PtNtar.et s'ould 2e

accordin.ly up to =#@ of transmitted po+er/ And PtNoffset value s'ould 2e <:M@/

>/

C'ec, CPIC5 Po+er value i/e/ M:1#@ of transmitted po+er/

$/

C'ec, PRAC5 propa.ation delay report- =#@ sample must 2e 2elo+ 1

st

 tier nei.'2ours- do+ntilt t'e

sector if overs'ootin. is t'ere/

</

C'ec, S5 over'ead value- it s'ould 2e 2et+een "#:>#@ to save radio resources for ot'er services/

C'ec, tilt of site/ Fine tune addition +indo+ and drop +indo+ siJetime to reduce S5 over'ead/

H/

C'ec, RRC *C mappin. +it' SRB 2it rates to >/$ ,2ps and 1>/H ,2ps/

G/

C'ec, 9aNBitRate7LPS8R4 and InitialBitRate7L/ 9aN 2itrate used s'ould not eNceed 1"M K2ps and

initial 2it rate can 2e do+n.raded to M ,2ps/ Also 9inAllo+edBitRate7L s'ould 2e M K2ps/

M/

C'ec, 7ylo- 4B implementation for 2etter PS 8R4 2itrate optimiJation/

=/

C'ec, ot'er carrier load and 2alance t'e traffic if re(uired 2y 7RRC- Cell reselection criteria- AJimut'

plannin. and also c'ec, compressed mode/

1#/

Implement A9R 7irected retry feature/

11/

C'ec, maN and min po+er of radio lin,/

1aimum &adio 3in4 Po.er5 &6 Ser7ice Ptma&36 9inof% % cpic' po+er  cpic'torefra2offset SF;Adustment-%ptNtotalmaN: ptNdpc'maN

and PS 9 multi&ab5 5 Ptma&369in of %% cpic'po+er: cpic'refra2offsetSF;Adustment- %PtNtotalmaN: ptNdpc'maN-ptNa2smaN

1inimum &adio 3in4 Po.er5 9aN% %ptN;maN;RL  Pcran.e7L- % PtNmaN:PtNdpc'min for every service/



_{8ote 6 Increase PA po+er if possi2le or Plan for anot'er carrier/}

:ffects of CPIC; Po.er modification

CPIC; 6ransmit

Po.er 

Increased soft 'andover over'ead 4oo muc' po+er  4oo little po+er  Less Po+er  Availa2le for traffic

CPIC5 covera.e 'oles

code detection )nrelia2le c'annel

estimation *arly cell reselection

'andover  Increased *28o re(uirement &educed system capacity &educed system capacity &educed system co7era<e Slo+ initial sync'onisation

8on: ideal traffic distri2ution Late cell reselection

'andover  8on: ideal traffic_distri2ution

CPIC; 6ransmit

Po.er 

Increased soft 'andover over'ead

Less Po+er  Availa2le for traffic

CPIC5 covera.e 'oles )nrelia2le scram2lin. code detection )nrelia2le c'annel estimation *arly cell reselection

'andout too early

Increased *28o re(uirement &educed system capacity &educed system capacity &educed system co7era<e Slo+ initial sync'onisation

8on: ideal traffic distri2ution Late cell reselection

)3 Common Control Channel

0

_{7L Common control c'annels must 2e 'eard over t'e +'ole cell- t'us t'eir}

po+er settin. is desi.ned for Qcell ed.e/

0

_{7L Common C'annels do not 'ave a po+er control/}

0

_{4'e po+er of t'e common p'ysical c'annels are set relative to t'e CPIC5}

default

values

6otal )3 Common Channel Po.er .ithout ;SPA

Service 4ype )efault Po.er  9inimum  Activity 9inimum A7era<e Po.er  9aNimum  Activity 9aNimum A7era<e Po.er  CPIC5 %% d=m 1## @ >> dBm 1## @ >> dBm P:SC5 %" d=m 1# @ "# dBm 1# @ "# dBm S:SC5 %" d=m 1# @ "# dBm 1# @ "# dBm P: CCPC5 28 d=m =# @ "G/< dBm =# @ "G/< dBm S: CCPC5 %% d=m "< @ "G dBm 11< @ >>/H dBm PIC5 2* d=m =H @ "$/M dBm =H @ "$/M dBm  AIC5 2* d=m # @ : M#@ "$dBm 4otal : : ></<dBm >/< 3 : >G/< dBm </H 3

1/

C'ec, Code tree 2loc,in. rate from RSRA8#HG report/ 5i.' code 2loc,in. does not necessary mean

t'e call setups are failin./ 7ynamic resource allocation +ill do+n.rade codes allocated for 5S7PA if

R== traffic increase/ *nsure Code 2loc,in. rate per SF to see +'at traffic is cause of t'e 2loc,in./

*/./ voice use SF1"M/

"/

C'ec, t'at code tree optimiJation is ena2led/ Fine tune parameters

Code4reeptimisation-Code4reept4imer and Code4ree)sa.e for code tree optimiJation/

>/

C'ec, S5 over'ead value- it s'ould 2e 2elo+ ><@ to save radio resources for ot'er services/

C'ec, tilt of site/ Fine tune addition +indo+ and drop +indo+ siJe time to reduce S5 over'ead/

$/

C'ec, 9aNBitRate7LPS8R4 and InitialBitRate7L/ 9aN 2itrate used s'ould not eNceed 1"M K2ps and

initial 2it rate can 2e do+n.raded to M ,2ps/ Also 9inAllo+edBitRate7L s'ould 2e M K2ps/

</

C'ec, FAC5 load and reduce FAC5 to 7C5 transitions 2y tunin. parameter

4rafol4'res'old7L5i.' Lo+ to increase 2uffer siJe for FAC5 state/ And c'ec, timer values for

state transition/

H/

Implement 5S7PA dynamic resource allocation and Fine tune

5SP7SC5CodeSet-5SP7SC59ar.inSF1"M for 5S7PA code up.rade and do+n.rade/

1/ C'ec, uplin, load is in mar.inal or overload area and R43P from RSRA8#HG/

"/ C'ec, )L po+er 2ased RR9 parameters

PrNtar.et

-

PrN4ar.etPS9aN

 and

PrN4ar.etPS9in

- If PrNtar.et ?O>#- means )L AC is disa2led/

>/ C'ec, 9issin. nei.'2ors +'ic' can cause 'i.' interference/

$/ C'ec, antenna ca2les and connectors +'ic' cause interference in t'e net+or, and pus'in. eNtra traffic to cells/ It can 2e c'ec,ed in non:2usy 'our 2y simultaneous 5SPA users/

</  AnalyJe net+or, si.nalin. Load %7elayed 'andover ma,es similar effect as missin. nei.'2or/

H/ Fine 4une parameter settin. of RR9 )L activity factor for 5S7PA )L return c'annel/

G/ Fine tune initial R== SIR and 5S)PA SIR tar.ets/ 8eed to optimiJe min and maN SIR tar.et values for radio lin, for LPC/

M/ ptimiJe RAC5 load and fine tune RAC5 capacity- PRAC5 pream2les//

=/  AnalyJe )*s ac,no+led.in. RRC Connection Setup erroneously %Fast dormancy 'i.'li.'ts t'is as RRC Connection Setup 'appens more often/

1/

C'ec, simultaneous 5S)PA users and limit no/ of users usin. "ms 44I if re(uired/ 7isa2le

'i.'er SF utiliJin. 5S)PA users usin. parameter 9aN4otal)plin,Sym2olRate settin.//

"/

C'ec, 9aNBitRate)LPS8R4 and InitialBitRate)L/ 9aN 2itrate used s'ould not eNceed 1"M

K2ps and initial 2it rate can 2e do+n.raded to M ,2ps/ Also 9inAllo+edBitRate)L s'ould 2e M

K2ps/

>/

Implement 5S7PA 1HK2ps )L return c'annel feature and fine tune 5S7PA9aNBitrate)L to 1"M

K2ps/

$/

Implement CPC feature/

</

Fine tune load control parameters li,e RRIndperiod- PrN9easAve3indo+ and

PrN9easFilterCoeff to report optimum load to AC/

1/

 Analyse R==C*s and Su2unit utiliJation from RSRA81>1 report/

"/

C'ec, alarms if indicatin. 5S7PA5S)PA confi.uration fail reflectin./ Also c'ec, system module

failure alarm/

>/

C'ec, 8odeB 2e'avior- sometimes 'i.' num2er of B4S fails o2served if RRC setup fails/

$/

C'ec, 9aNBitRatePS8R4 and InitialBitRate/ 9aN 2itrate used s'ould not eNceed 1"M K2ps and

initial 2it rate can 2e do+n.raded to M ,2ps/ Also 9inAllo+edBitRate s'ould 2e M K2ps/

</

C'ec, S5 over'ead value- it s'ould 2e 2elo+ ><@ t o save radio resources for ot'er services/ Fine

tune addition +indo+ and drop +indo+ siJe time to reduce S5 over'ead/

H/

Increase C* steps if C* utiliJation is 'i.' %? M#:M<@/

G/

*valuate 8BAP counters %radio lin, reconfi.uration failures:: 8BAP Si.nallin. Per cause Report

M/

C'ec, any mass event occurred if froJen B4S fails are o2served/

1/

C'ec, Iu2 utiliJation for A49 and IP sites/ Refer report num2er RSRA8#MG/

"/

C'ec, 9M## report to identify failures due to lac, of Iu2 Band+idt'- lac, of R8C capacity and

 AAL" si.nallin. failure/

>/

C'ec, CC confi.uration for A49 sites/

$/

C'ec, AAL" CAC resource reservation- PCCC utiliJation measuremements/

1/

C'ec, av./ and maN R8C units utiliJation 2y 9<=" reports/

"/

Implement )RA:PC5 in net+or,/ And fine tune state transitions parameters/

>/

*na2le Fast dormancy 'andin./

$/

Fine tune RRC +ait timers parameters and decrease RAC5 capacity/

</

Fine tune Active set siJe and addition and drop +indo+ siJe and t ime for Active set update/

H/

Fine tune FAC5 capacity parameters to avoid 7C5 selection for s'ort messa.e due to 'i.'

penetration of smartp'ones/

G/

Increase R8C capacity to minimiJe RAC5 load/

1

C'ec, common c'annel Load



_{PRAC5 9essa.e Load}



_{RAC5 4'rou.'put %increase RAC5Capacity if re(uired}



_{C'ec, PC5 load and t'rou.'put/}



_{9onitor FAC5:c and u Load and t'rou.'put/}

"

*na2le Common c'annel setup feature and its mappin. +it' different RRC causes/

>

*na2le 7RRC for traffic 2alancin./

$

Fine tune RRC +ait timers parameters to decrease uplin, load and avoidin.

a..ressively RRC retry/

<

*na2le 7irected Retry feature/

H

*na2le PC5"$,2ps usin. PtNSCCPC5"/

1iscellaneous

1

Parameters 7etails

"

Counters 7etails