wcdma utran optimization flow with comment issue1 0

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Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.

C!"A #T$A%&ptimi'ation

(low


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Page2Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.

(oreword

C!"A optimi'ation is a very important part in theli)e o) the networ*.

"ainly, the optimi'ation contents the preparation,

single site veri+cation, $( optimi'ation, parametersoptimi'ation.


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Contents

1. Introduction of Optimization Flow

2. The preparation )or the &ptimi'ation ro-ect

. /ingle /ite eri+cation

1. $( &ptimi'ation

. arameters &ptimi'ation

6. &ptimi'ation $eport


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C!"A &ptimi'ation (low


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Contents

. 3ntroduction o) &ptimi'ation (low

2. The preparation for the Optimization Project


1. $( &ptimi'ation




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C!"A &ptimi'ation (low 7reparation



The reparation )or ro-ection

The )ollowing wor* is re8uired4 #nderstanding o) the 9:isting %etwor*

Cluster !ivision and &ptimi'ation Team 9sta5lishment

&ptimi'ation Tools and /o)tware




#nderstanding o) the 9:isting %etwor* 4 $adio %etwor* lanning report

Latest site con+guration parameter ta5le and radio

part parameter con+guration ta5le &"C statistic data and su5scri5er complaints o) the

e:isting networ*



The reparation )or the &ptimi'ationro-ection Cluster !ivision and &ptimi'ation Team

9sta5lishment

RNO leader-1

Data Analyzer

Drive Test Operator

Driver

RNO leader-n

Data Analyzer

Drive Test Operator

Driver

..................

RNO manager




&ptimi'ation Tool4

#"T/ /canner

#"T/ Test #9

;/ and data

line

!igital camera

&ptimi'ation

/o)tware4

ost processing

tool

"ap3n)o



Contents



3. Single Site Verication

1. $( &ptimi'ation





C!"A &ptimi'ation (low < /ingle /iteeri+cation


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/ingle /ite eri+cation

urpose4 The single site veri+cation test is a part o) the C!"A networ*

optimi'ation to ensure that the 5asic )unctions o) the cell are

normal, such as call access, call 8uality, handover and so on.

/ingle site veri+cation involves the )ollowing aspects4

arameter setting chec* in idle mode

/ervices call =A"$>>/? )unction chec* in connected mode

H/!A )unction chec*

C3CH $/C @ 9c>3o

3nstallation pro5lems chec*


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/ingle site veri+cation includes 4 preparations 5e)ore test

single site test

solving pro5lems

The single site veri+cation is completed 5y4

&n7site engineers

$%& engineers


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/ingle /ite eri+cation 7 Tas* o)the on7site engineers reparations /ite /tatus Chec*

(or each cell to 5e measured, chec* /tatus 5y L"T or "2000 /tatus

Con+guration !ata Collection and Chec*

chec* whether the data con+gured is consistent with the planneddata

Testing oint /election

Test #9 /etup

/et the handset to testing mode 5e)ore test &ther reparations

Application key


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/ingle /ite eri+cation 7 Tas* o)the on7site engineers eri+cation in 3dle "ode (re8uency Chec*

Chec* whether the )re8uency num5er o) the cell to 5e measured is

consistent with the planned data

/cram5le Chec*

Chec* whether the scram5le con+guration is consistent with the planned

con+guration

LAC>$AC Chec*

Chec* whether the LAC>$AC o) the cell to 5e measured is consistent with the

planed one.

C3CH$/C>C3CH9c>3o =%ear /ite? Test Chec* whether the C3CH $/C and C3CH 9c>3o received 5y #9 are greater

than the threshold


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/ingle /ite eri+cation 7 Tas* o)the on7site engineers eri+cation in connect "ode &riginating and Terminating Connection Test o) oice /ervice

Chec* whether the originating and terminating )unction o) voice service

)unction normally 5y call 8uality test

&riginating and Terminating Connection Test o) /ervice

Chec* whether the originating and terminating )unction o) service)unction normally 5y call 8uality test

Connection Test o) / /ervices

Chec* whether the originating )unction o) / services are normal 5y handset

online service

/olving ro5lems

3) on7site engineers +nd product )unction pro5lems or parameter

con+guration pro5lems, the engineers must locate them and retest until

the pro5lems are solved and process terminates.


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/ingle /ite eri+cation < Tas* o)the $%& engineers

Coverage !T Chec* Chec* whether C3CH $/C and C3CH 9c>3o received

5y scanner is normal

A5normal power ampli+er

A5normal connection o) antenna7)eeder

3nconsistency o) antenna tile>direction angle )rom

planned one

Bloc*ing 5y 5uildings


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/ingle /ite eri+cation < Tas* o)the $%& engineers

H/!A Access (unction Test

To test H/!A access )unction

Chec* whether the antenna )or receiving diversity

signals is reversely connected

Chec*ing Antennas 5y 9:changing (eeders


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/ingle /ite eri+cation < Tas* o)the $%& engineers Antenna !iversity Chec*

3) the receive antenna crossed, the uplin* diversity receive gain is loss,

and the uplin* inter)ere is dou5led. 3t will aect the uplin* capa5ility.

/olving ro5lems

3) $%& engineers +nd pro5lems a5out product )unction, $%& engineers

must as* product support engineers to solve pro5lems


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/ummari'ation4 3n single site veri+cation stage, engineers chec*

whether e8uipment )unctions normally

/ingle site veri+cation is a 5asis )or the )ollowing $(

optimi'ation and service optimi'ation

3) all veri+cations a5out )unction are accepted, the

single site veri+cation is completed

A)ter single site veri+cation, optimi'ation comes to $(optimi'ation


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Contents




!. "F Optimization




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C!"A &ptimi'ation (low <$( &ptimi'ation


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$( &ptimi'ation Dow


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$( &ptimi'ation 7 reparation=?

!eciding &ptimi'ation target ea* coverage

ilot pollution

High /H& (actor 5ased on !T

!ividing Clusters

!eciding Test $oute

Con+rm the E3 !T acceptance route with the operator 5e)ore !T

reparing Tools and !ata

reparing /o)tware

reparing Hardware

reparing !ata


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$( &ptimi'ation 7 reparation=2?

Index Reference Remarks

CPICH Ec/Io ≥ –9dB

≥ 97% in uran area !ccording "o "e#" re#u$" ro& "'e #canner( inun$oaded and ou"door condi"ion#( in )$anningco*erage area#( "e#" in a grid+$i,e rou"e "o co*era$$ ce$$#-

≥ 97% in #uuranarea

CPICH .CP ≥ –95dB&

≥ 98% in uran area !ccording "o "e#" re#u$" ro& "'e #canner( inun$oaded and ou"door condi"ion#( in )$anningco*erage area#( "e#" in a grid+$i,e rou"e "o co*era$$ ce$$#- 'e co*erage $e*e$ reue#" i# a#ic- Io)era"or# 'a*e )ene"ra"ion $o## reue#"( add "'e)ene"ra"ion $o## "o "'e co*erage $e*e$-

≥ 95% in #uuranarea

H ac"or a#ed on 30%–40%

'e H ac"or a#ed on #'ou$d e 5% "o10% $oer "'an "'e goa$( ecau#e "'e o$$oingo)"i&ia"ion# cau#e "'e #o" 'ando*er ac"or "oincrea#e

Pi$o" )o$$u"ion ra"io 5% –

RF Optimization - Targets


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$( &ptimi'ation 7 reparation=?

!ividing Clusters $( optimi'ation must 5e per)ormed on a group o) or a

cluster o) %odeBs ,This ensures that inter)erence )rom intra7

)re8uency neigh5or cells are considered during optimi'ation.

!ividing clusters involves approval 5y the operator.

!eciding Test $oute

The E3 !T acceptance route is the core route o) $(

optimi'ation test routes. 3ts optimi'ation is the core o) $(

optimi'ation.


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$( &ptimi'ation 7 reparing Tools and

!ata4

Software

;ene: ro5e;ene: Assistant

;ene: %astar

"apin)o

#e$ice

/canner Test terminal anddata line

Laptop

ehicle mountedinverter

%eeded data

List o) engineeringparameters

"ap

E3 re8uirements

%etwor* con+gurationparameters

/urvey report

/ingle site veri+cationchec*list

(loor plan o) the target5uildings


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$( &ptimi'ation 7 !ataCollection

!uring $( optimi'ation stage, the *ey is the optimi'ation o)radio signals distri5ution, with the ma-or means o) !T and

indoor test

!T is a ma-or test. Collect scanner and #9 data o) radio signals

5y !T test

#sually the !T and indoor test during $( optimi'ation stage is

5ased on service.

!uring $( optimi'ation stage, collect neigh5or cell data o)

networ* optimi'ation and other data con+gured in $%C

data5ase


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$( &ptimi'ation

Attention4 !uring the $( optimi'ation ,sometimes the pro5lems can 5e

resolved completely 5y proper ad-ustment, 5ut there is also

some disadvantages o) the $( optimi'ation

The duration o) the $( &ptimi'ation will 5e always very long

/ome ad-ustment is diFcult to implement

3) the pro5lems are not resolved 5y the $( optimi'ation, it is

diFcult to recover the antennas 5ac* to the )ormer

conditions


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$( &ptimi'ation

/ome advices4 Be)ore the $( ad-usting, weGd 5etter survey the relative

sites, and give some applica5le advice

3) possi5le, do the $( ad-ustment and test the eect at

the same time


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$( Coverage ro5lem Analysis

Coverage pro5lem analysis is *ey to $( optimi'ation.3t involves signal distri5ution. The coverage

pro5lems to 5e analy'ed include4

ea* coverage

&vershoot coverage

#n5alance 5etween uplin* and downlin*

%o primary pilot cell


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Coverage Analysis rocesses4 !ownlin* Coverage Analysis

Analy'ing ilot Coverage /trength

Analy'ing ilot Coverage 8uality

Analy'ing rimary ilot Cell

Analy'ing comparison o) #9 and /canner Coverage

#plin* Coverage Analysis

Analy'ing #plin* 3nter)erence Analy'ing distri5ution o) #9 Transmit ower


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!ownlin* coverage analysis 7 ilot Coverage /trengthAnalysis

Chec* areas o) poor coverage, suggestion value as

5elow4

;ood4 $/C 7I dBm

(air4 7J dBm K $/C 7I dBm

oor4 $/C 7J dBm

"ar* the areas with wea* coverage or common

seamless coverage o) large areas )or )urther analysis


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$( Coverage ro5lem AnalysisDownlink coverage analysis - Pilot Coverage trengt! "nalysis


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#!at$s t!e

pro%lem&

Downlink coverage analysis - Pilot Coverage '(ality "nalysis)


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7.

76

720

7J

7I

7M

76

7

71

9c>3o $/C-90

-85

-80

-75

-70

-65

-60

#!at$s t!e

pro%lem&

Downlink coverage analysis - Pilot Coverage '(ality "nalysis)


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!ownlin* coverage analysis 7 Analy'ing rimary ilotCell4

Cell primary pilot analysis is analy'ing cell scram5le

in)ormation o5tained in !T

The content to 5e chec*ed include 4

ea* coverage cell

Cross7cell coverage cell

%o primary pilot cell


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$( Coverage ro5lem AnalysisDownlink coverage analysis - "nalyzing Primary Pilot Cell)


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$( Coverage ro5lem AnalysisDownlink coverage analysis - "nalyzing comparison of *+ and canner Coverage )

Incon#i#"en" Be#" er*ice Ce$$ e"een #canner and E


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$( Coverage ro5lemCoverage ro5lem

AnalysisAnalysis #plin* coverage analysis is analy'ing #9 transmit power o5tained in !T.

The 8uality standards o) #9 transmit power must 5e com5ined with optimi'ation standards.

Assume the optimi'ation inde:es o) #9 transmit power as 5elow4

#9T:owerK 0 dBm NO JP

The test result o) voice service

5y test handset. Assume thema:imum transmit power o) #9is 2 dBm

The de+ned corresponding 8uality standards are4

;ood i) #9T:ower K 0 dBm

(air i) 0 dBm #9T:ower K 0 dBm

oor i) #9T:ower N 0 dBm

*plink coverage analysis)


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$( Coverage ro5lemCoverage ro5lem

AnalysisAnalysis*plink - Distri%(tion of *+ Transmit Power)

'e di#"riu"ion o E "ran#&i" )oer re$ec"# "'e di#"riu"ion o u)$in,in"ererence and u)$in, )a"' $o##

'e di#"riu"ion o E "ran#&i" )oer


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ilot ollution ro5lem Analysis

ilot ollution oint !e+nition4 The pilot pollution is that e:cessive strong pilots e:ist

in a point 5ut no primary pilot is strong enough

ilot pollution e:ists i) all the )ollowing conditions are

met4

The num5er o) pilots that meet the )ollowing condition is

more than 1 and C3CH$/C N 700dBm

=C3CH$/Cst 7 C3CH$/C 1th? dB


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ilot ollution ro5lemilot ollution ro5lem

AnalysisAnalysis

+62+63

+64+66 +67

+81

+90

+85

+80

+75

+70

+65

+60

C1 C2 C3 C4 C5 C6

. / C P

9 d B & :

!c"i*e e" Pi$o" Po$$u"ion

;argin


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AnalysisAnalysisPilot Poll(tion Definition - +stimated "ctive et ize +xample+stimated "ctive et ize +xample )


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AnalysisAnalysisC Co(nt - in Poll(tion et

. /01 2/34-

4 215 2036-

20 257 43.-

22 251 437-

2/ 28. 43/-

26 265 .38-

21 45 534-

27 48 534-

2. 71 837-24 78 831-

/0 76 831-

/2 51 635-

6/ 58 638-

65 64 /38-

67 66 /32-

86 24 23/-

8. . 035-

56 7 038-

17 6 03/-

.0 / 032-

260 / 032-

'ou$d e in*e#"iga"ed'ou$d e in*e#"iga"ed

Pilot Poll(tion Definition - +stimated "ctive et ize +xample )

Pi$o" )o$$u"ion re#u$"#


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Causes o) ilot ollution 4 3mproper Cell !istri5ution

&ver High %odeB or Highly7mounted Antenna

3mproper Antenna A'imuth 3mproper Antenna !own Tilt

3mproper 3CH ower

Am5ient (actors


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rocess )or Analy'ing ilot ollution Analy'e scanner75ased $/C )or st Best /ervice Cell and

9c>3o )or st Best /ervice Cell

Analy'e scanner75ased hole

Locate the cells that cause pilot pollution o) the *ey areas.

Qudge whether the pilot pollution is caused 5y e:istence o)

multiple strong pilots or lac* o) a strong pilot

Con+rm the cells that need eliminating the coverage o) anarea and that need enhancing the coverage o) an area

$etest a)ter ad-ustment


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/olutions o) ilot ollution 4 Antenna Ad-ustment

C3CH ower Ad-ustment

#sing $$# or "icro Cells


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Handover ro5lem Analysis

By ad-usting $( parameters ,we can Control the si'e and

location o) handover areas ,then we can eliminate

handover call drop due to sharp Ductuation and increase

handover success rate.

!uring $( optimi'ation stage, the involved handover

pro5lem include4

%eigh5or cell optimi'ation


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Handover ro5lem Analysis 7%eigh5or cell optimi'ation

!uring $( optimi'ation stage, missing neigh5or cell is a *ey pro5lem. Theneigh5or cell optimi'ation includes adding and removing neigh5or cells

Add4 "issing neigh5ors

$emove4 These neigh5ors that were not measured 5ut are in the neigh5or

list.

Caref(l consideration is needed prior to removing neig!%o(rs

%eigh5or cell optimi'ation can 5e analy'ed 5y 4

/canner !ata

#9 !ata Analysis


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Handover ro5lem Analysis 7Handover ro5lem Analysis 7

%eigh5or cell optimi'ation%eigh5or cell optimi'ation By the scanner data, the Assistant can generate a

neigh5or cell analysis report in the )ormat o) 9:cel


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Handover ro5lem Analysis 7%eigh5or cell optimi'ation

e can also analy'e a missing neigh5or cell 5y #9 !T

data

The daemon analysis tool can seldom analy'e #9 data

automatically and generate missing neigh5or cells

5ut we can Compare the active set 9c>3o distri5ution

diagram measured 5y #9 and that measured 5y scanner

The spots with missing neigh5or cells has a poor 9c>3omeasured 5y #9 and a strong 9c>3o scanned 5y scanner .


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Handover ro5lem Analysis #9 /H& er)ormance

The success rates )or event a, 5 @ c and can 5e

o5tained )rom so)tware9(m%er of "ctive et *pdates9(m%er of "ctive et *pdates

+vent Co(nt

+vent 2a - 328

+vent 2% - 306+vent 2c - 64

9(m%er of "ctive et *pdate Completes9(m%er of "ctive et *pdate Completes

+vent Co(nt

+vent 2a - 326

+vent 2% - 305+vent 2c - 62

oft-:andover (ccess Rateoft-:andover (ccess Rate

+vent Rate

+vent 2a - 99-4

+vent 2% - 99-7

+vent 2c - 96-9


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Contents

. 3ntroduction o) &ptimi'ation (low2. The preparation )or the &ptimi'ation ro-ect


1. $( &ptimi'ation&. Parameter' Optimization



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C!"A &ptimi'ation (low <arameter &ptimi'ation


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urpose o) arameters&ptimi'ation

urpose o) parameters optimi'ation

3ncrease the access success ratio

!ecrease the call drop ratio

3ncrease the 8uality o) service

The tools and data )or analysis4

scanner and #9

$%C record data

/tatistic tools and E3

"/C @ /;/% record i) necessary


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!rive test The contents o) drive test

The call setup test )or voice service

The continuous call test )or voice service

3dle mode test

The call setup test )or video phone service

The continuous call test )or voice service

The call setup test )or / service

The continuous call test )or / service

T!e test s!o(ld %e performed repeatedly to t!e position wit!T!e test s!o(ld %e performed repeatedly to t!e position wit!

pro%lems to make s(re t!at t!e pro%lem is repeata%lepro%lems to make s(re t!at t!e pro%lem is repeata%le


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Test )or /pecial Areas

/pecial area re)ers to a small district or indoorsenvironment

&perator oFces, residence o) 3

Eey hotels or entertainment location

;overnment location

Locations o) large company or group su5scri5ers

Locations tend to 5e cared , such as railway station or

airport


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Contents

.

3ntroduction o) &ptimi'ation (low2. The preparation )or the &ptimi'ation ro-ect


1. $( &ptimi'ation. arameters &ptimi'ation

(. Optimization "eport

C!"A & ti i ti (l


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C!"A &ptimi'ation (low <&ptimi'ation $eport &utput


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&ptimi'ation $eport The 《 optimi'ation report》 should 5e presented a)ter the pro-ect

passes the customer acceptance. The optimi'ation report should

include4

ro-ect 5ac*ground introduction

9:isting networ* status

Acceptance criteria

&ptimi'ation process

ro5lem analysis and ad-ustment recommendation, and the eect )or

the implemented part

Acceptance test and result

Le)tover pro5lems and suggestions )rom the optimi'ation point o) view.


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