wcdma utran optimization flow with comment issue1 0
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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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Page3Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
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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Page4Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
C!"A &ptimi'ation (low
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Page6Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Contents
. 3ntroduction o) &ptimi'ation (low
2. The preparation for the Optimization Project
. /ingle /ite eri+cation
1. $( &ptimi'ation
. arameters &ptimi'ation
6. &ptimi'ation $eport
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C!"A &ptimi'ation (low 7reparation
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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
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The reparation )or ro-ection
#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*
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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
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The reparation )or ro-ection
&ptimi'ation Tool4
#"T/ /canner
#"T/ Test #9
;/ and data
line
!igital camera
&ptimi'ation
/o)tware4
ost processing
tool
"ap3n)o
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Contents
. 3ntroduction o) &ptimi'ation (low
2. The preparation )or the &ptimi'ation ro-ect
3. Single Site Verication
1. $( &ptimi'ation
. arameters &ptimi'ation
6. &ptimi'ation $eport
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C!"A &ptimi'ation (low < /ingle /iteeri+cation
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/ingle /ite eri+cation
urpose4 The single site veri+cation test is a part o) the C!"A networ*
optimi'ation to ensure that the 5asic )unctions o) the cell are
normal, such as call access, call 8uality, handover and so on.
/ingle site veri+cation involves the )ollowing aspects4
arameter setting chec* in idle mode
/ervices call =A"$>>/? )unction chec* in connected mode
H/!A )unction chec*
C3CH $/C @ 9c>3o
3nstallation pro5lems chec*
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/ingle /ite eri+cation
/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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Page20Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
/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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Page21Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
/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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Page22Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
/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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Page23Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
/ingle /ite eri+cation
/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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Page24Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Contents
. 3ntroduction o) &ptimi'ation (low
2. The preparation )or the &ptimi'ation ro-ect
. /ingle /ite eri+cation
!. "F Optimization
. arameters &ptimi'ation
6. &ptimi'ation $eport
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Page25Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
C!"A &ptimi'ation (low <$( &ptimi'ation
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Page27Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
$( &ptimi'ation Dow
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Page28Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
$( &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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Page29Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
$( &ptimi'ation 7 reparation=2?
Index Reference Remarks
CPICH Ec/Io ≥ –9dB
≥ 97% in uran area !ccording "o "e#" re#u$" 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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Page30Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
$( &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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Page31Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
$( &ptimi'ation 7 reparing Tools and
!ata4
Software
;ene: ro5e;ene: Assistant
;ene: %astar
"apin)o
#e$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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Page32Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
$( &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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Page34Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
$( &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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Page35Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
$( &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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Page36Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
$( 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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Page37Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
$( Coverage ro5lem Analysis
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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Page38Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
$( Coverage ro5lem Analysis
!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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Page39Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
$( Coverage ro5lem AnalysisDownlink coverage analysis - Pilot Coverage trengt! "nalysis
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Page41Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
$( Coverage ro5lem Analysis
#!at$s t!e
pro%lem&
Downlink coverage analysis - Pilot Coverage '(ality "nalysis)
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Page42Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
$( Coverage ro5lem Analysis
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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Page44Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
$( Coverage ro5lem Analysis
!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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Page45Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
$( Coverage ro5lem AnalysisDownlink coverage analysis - "nalyzing Primary Pilot Cell)
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Page46Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
$( Coverage ro5lem AnalysisDownlink coverage analysis - "nalyzing comparison of *+ and canner Coverage )
Incon#i#"en" Be#" er*ice Ce$$ e"een #canner and E
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Page47Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
$( Coverage ro5lemCoverage ro5lem
AnalysisAnalysis #plin* coverage analysis is analy'ing #9 transmit power o5tained in !T.
The 8uality standards o) #9 transmit power must 5e com5ined with optimi'ation standards.
Assume the optimi'ation inde:es o) #9 transmit power as 5elow4
#9T:owerK 0 dBm NO JP
The test result o) voice service
5y test handset. Assume thema:imum transmit power o) #9is 2 dBm
The de+ned corresponding 8uality standards are4
;ood i) #9T:ower K 0 dBm
(air i) 0 dBm #9T:ower K 0 dBm
oor i) #9T:ower N 0 dBm
*plink coverage analysis)
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Page48Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
$( Coverage ro5lemCoverage ro5lem
AnalysisAnalysis*plink - Distri%(tion of *+ Transmit Power)
'e di#"riu"ion o E "ran#&i" )oer re$ec"# "'e di#"riu"ion o u)$in,in"ererence and u)$in, )a"' $o##
'e di#"riu"ion o E "ran#&i" )oer
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Page49Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
ilot ollution ro5lem Analysis
ilot ollution oint !e+nition4 The pilot pollution is that e:cessive strong pilots e:ist
in a point 5ut no primary pilot is strong enough
ilot pollution e:ists i) all the )ollowing conditions are
met4
The num5er o) pilots that meet the )ollowing condition is
more than 1 and C3CH$/C N 700dBm
=C3CH$/Cst 7 C3CH$/C 1th? dB
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Page50Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
ilot ollution ro5lemilot ollution ro5lem
AnalysisAnalysis
+62+63
+64+66 +67
+81
+90
+85
+80
+75
+70
+65
+60
C1 C2 C3 C4 C5 C6
. / C P
9 d B & :
!c"i*e e" Pi$o" Po$$u"ion
;argin
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Page51Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
ilot ollution ro5lemilot ollution ro5lem
AnalysisAnalysisPilot Poll(tion Definition - +stimated "ctive et ize +xample+stimated "ctive et ize +xample )
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Page52Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
ilot ollution ro5lemilot ollution ro5lem
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$$u"ion re#u$"#
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Page53Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
ilot ollution ro5lem Analysis
Causes o) ilot ollution 4 3mproper Cell !istri5ution
&ver High %odeB or Highly7mounted Antenna
3mproper Antenna A'imuth 3mproper Antenna !own Tilt
3mproper 3CH ower
Am5ient (actors
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Page55Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
ilot ollution ro5lem Analysis
rocess )or Analy'ing ilot ollution Analy'e scanner75ased $/C )or st Best /ervice Cell and
9c>3o )or st Best /ervice Cell
Analy'e scanner75ased hole
Locate the cells that cause pilot pollution o) the *ey areas.
Qudge whether the pilot pollution is caused 5y e:istence o)
multiple strong pilots or lac* o) a strong pilot
Con+rm the cells that need eliminating the coverage o) anarea and that need enhancing the coverage o) an area
$etest a)ter ad-ustment
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Page56Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
ilot ollution ro5lem Analysis
/olutions o) ilot ollution 4 Antenna Ad-ustment
C3CH ower Ad-ustment
#sing $$# or "icro Cells
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Page57Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
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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Page58Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
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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Page59Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
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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Page60Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
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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Page61Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
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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Page62Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Contents
. 3ntroduction o) &ptimi'ation (low2. The preparation )or the &ptimi'ation ro-ect
. /ingle /ite eri+cation
1. $( &ptimi'ation&. Parameter' Optimization
6. &ptimi'ation $eport
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Page63Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
C!"A &ptimi'ation (low <arameter &ptimi'ation
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Page64Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
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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Page65Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
!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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Page68Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
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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Page69Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
Contents
.
3ntroduction o) &ptimi'ation (low2. The preparation )or the &ptimi'ation ro-ect
. /ingle /ite eri+cation
1. $( &ptimi'ation. arameters &ptimi'ation
(. Optimization "eport
C!"A & ti i ti (l
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Page70Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
C!"A &ptimi'ation (low <&ptimi'ation $eport &utput
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Page71Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
&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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'an, =ou-'uaei-co&