TOP 10 3G RAN Optimisation Actions Version 0.4
TOP 10 3G Optimisation Actions WCDMA optimisation, dominance, intererence, t!ro"#!p"t N$T%O&&%O& Perormance, 3G Radio Pro#ram
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Table of contents
1. (ntrod"cti (ntrod"ction.. on............. ..................... ..................... ..................... ..................... ..................... ..................... ...................... ..................... ..................... ...................................... ........................... 3 '. Net)or* p+annin# r"+es or optim"m perormance.............................................................................3 3. Net)or* !ea+t! c!ec* ........................ .......... ............................ ............................ ............................ ............................ ............................ ............................ ..................... .......... ... 4 3.1 T& A+arms ca"sin# +oc*ed ce++s .............................................................................................4 3.1.1 -a"+t in OM and D&P &W interace....................................................................................4 3.1.' ATM o/er+o). o/er+o)........... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... .................................. ........................ 4 3.1.3 D&C"s ai+"re....................................................................................................................4 3.1.4 2nit &W do)n+oad ai+ed...................................................................................................... 3.1. W&P R"s $rror................................................................................................................. 3.1. No Connection to 2nit.......................................................................................................... 3.' &ot)are and Parameter c!ec*s................... ............................ .............. ............................ ......................... ................ .......... .......... .......... ......... .... 3.3 Nei#!o"r Consistenc5 c!ec*s................................................................................................... 3.4 Ce++ +oad c!ec*s.......................................................................................................................... 3. RAN Co"nter and 6P( c!ec*s..................................................................................................... 3..1 Ce++ A/ai+ai+it5..................................................................................................................... 3..' RRC set"p and access comp+ete ratio................................................................................. 3..3 RA set"p and access comp+ete ratio.................................................................................. 3..4 RA drop ratio...................................................................................................................... 3. 2$ Perorman Perormance ce c!ec*....... c!ec*.................. ..................... ..................... ..................... ..................... ..................... ..................... ......................................... .............................. 7 4. Perormance c!ec* )it! -ie+d Meas"rements...................................................................................7 . Top 10 optimisation acti/ities to impro/e ca++ perormance...............................................................8 .1 Common Ca++ Perormance (ss"es..............................................................................................8 .' Voice 9AMR: speciic perormance (ss"es.................................................................................10 .3 Video Ca++ Perormance (ss"es.................................................................................................11 .4 P& Ca++ Perormance (ss"es.....................................................................................................11 . (&;O perormance....................................................................................................................14 . Optimisation Too+s..........................................................................................................................14 .1 No*ia App+ication
Ana+5sis too+.....................................................................................................................18 7. Reerenc Reerences.... es............... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ..................... ............................................. .................................. 1? 8. G+ossar5..........................................................................................................................................'0
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INTR!"CTIN T!e aim o t!is doc"ment is to s"mmari@e !o) to •
(n/esti#ate t!e reasons or poor 3G radio perormance 9ca++ set"p ai+"re, ca++ drop:,
•
Descrie t!e potentia+ reasons
•
Propose actions to impro/e perormance 9as top 10 optimisation actions: o
ot! common and ser/ice speciic 9C& AMR, C& Video and P&:
T!is doc"ment can e "sed as net)or* pre+a"nc! optimisation c!ec*+ist. 2.
N#T$R% &'(NNIN) R"'#* +R &TI" &#R+R(NC# $>perience !as s!o)n t!at t!e optim"m perormance )i++ e ac!ie/ed )it! t!e o++o)in# net)or* p+annin# r"+es •
•
•
&ites s!o"+d e +ocated c+ose to t!e "sers T!e ce++s s!o"+d co/er on+5 )!at t!e5 are s"pposed to co/er 9a/oid !i#! sites: 2nnecessar5 o/er+appin# s!o"+d e a/oided
5 doin# so t!e o/era++ intererence +e/e+ )i++ e minimi@ed and net)or* capacit5 )i++ e ma>imi@ed. &;O !e+ps to red"ce t!e intererence pro/idin# &;O #ain )!ic! needs to a+anced a#ainst "sed reso"rces 9T& po)er, (" transmission:. -irst c!ec* co"+d e done )it! Radio P+annin# too+ 5 +oo*in# at t!e CP(C; co/era#e, ce++ dominance, &;O o/er!ead, ser/ice co/era#e and interce++ intererence areas. T!e main reasons or poor radio perormance are re+ated to •
Non optim"m ce++ desi#n 9+ocation, antenna t5pe%!ei#!t%earin#%ti+t:
•
Wron# site imp+ementation 9antennas, ca+es, parameters:
•
•
Wron# or ad parameter p+annin# 9scram+in# code a++ocations etc, CP(C; etc.: Wron# or missin# nei#!o"r re+ations
T!ere can e a+so ot!er reasons t!an ad net)or* p+annin#, +i*e •
2$speciic pro+ems 9!an#in# onto t!e ce++, poor ce++ rese+ection, poor po)er contro+:
•
2$NW incompatii+ities
•
T&, RNC or net)or* a"+ts
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N#T$R% #('T C#C% T!e Net)or* !ea+t! c!ec* ens"res t!at t!e p+anned net)or* is imp+emented correct+5, a++ ce++s are "p and r"nnin# and correct parameters are set. T!ese s!o"+d e done eore optimisation. T!ere are man5 c!ec*s to +oo* at •
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A+arm c!ec* 9T&, RNC, ot!er:
•
&W and Parameter c!ec*
•
Nei#!o"r consistenc5 c!ec*
•
Ce++ +oad c!ec*
•
6P( c!ec*
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2$ perormance c!ec* or a++ t!e ser/ices in a contro++ed en/ironment
/T* (larms casin /locked cells T!e a+arm stat"s !as to e c!ec*ed irst eca"se t!e5 aect perormance. T!ere co"+d e a"+ts in T&s, transmission, RNC or in ot!er net)or* e+ements. T!e a+arm ino can e retrie/ed rom NetAct. T!e a+arms !a/in# t!e i##est impact on t!e perormance is T& a+arm, n"mered 71 Base station operation de#raded. T5pica++5, 71 a+arms means t!at t!ere )o"+d e ca++ set"p ai+"re, &;O ai+"re or dropped ca++. To c+ear t!e a+arm, T& ce++%site restart ma5 e needed. ;o)e/er ne) T& &W re+eases 9EEE: !a/e si#niicant+5 impro/ed t!e sit"ation. T!e a+arm 71 contains s"pp+ementar5 ie+d inormation ao"t t!e dierent a"+t reasons. Descried e+o) are t!e main reasons. More inormation ao"t a+arm ino is a/ai+a+e in RAN C"stomer Care "++etins and t!e A+arm Man"a+ in N$D F17. .
3.1.1
-a"+t in OM and D&P &W interace Description &-N s5nc!roni@ation is +ost. (++e#a+ &-N /a+"e in do)n+in*. T!e W&P does not recei/e rame n"mer rom t!e Wideand App+ication Mana#er 2nit 9WAM:, or t!e rame n"mer is a"+t5.
3.1.'
ATM o/er+o) Description 2na+e to a++ocate AA<' reso"rces. (nstr"ctions T!e reason or t!is co"+d e +ac* o transmission capacit5. T!is can e a+so d"e to RNC eca"se it !as +imit in transmission capacit5 re+ated to AA<' reso"rces. T!e sit"ation )i++ impro/e in RAN1..'$D' re+ease.
3.1.3
D&C"s ai+"re Description Data, Contro+ and &i#na++in# "s et)een WAMs and W&Ps 9D&C"s: -ai+"re. Tar#et Node 9A&(C: detects a a"+t in its operation, or some A&(C !as not een © Nokia Networks 2004, Company Confidential
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a+e to )rite data on t!e D&C"s to t!e tar#et node, or a ai+"re in t!e D&C"s, )!ic! means t!at messa#es do not #et t!ro"#! /ia t!at D&C"s. 3.1.4
2nit &W do)n+oad ai+ed Description (n Case A+armin# so"rce OM s+a/e WAM or Wideand &i#na+ Processor 9W&P: t!e sot)are do)n+oadin# rom &W Mana#ement s"s5stem to t!e "nit%s""nit !as ai+ed. T!is a+arm is c+ose+5 re+ated to -a"+t in OM and D&P &W interace pro+em.
3.1.
W&P R"s $rror Description Wideand &i#na+ Processor 9W&P: R"s $rror (RAD A&(C !as detected a R "s error.
3.1.
No Connection to 2nit Description A"to detection does not #et a response rom a "nit t!at is mentioned in t!e ;W Dataase.
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*oftware and &arameter cecks T!e &W in a++ N$s 9WT&, RNC, AHC etc.: s!o"+d e c!ec*ed 9to e t!e +atest one:. A+so t!e &W in optimisation too+s 9N$MO, 2$ etc.: s!o"+d e c!ec*ed 9to e t!e +atest:. T!e parameters in t!e RNC dataase s!o"+d e c!ec*ed so t!at t!e5 are imp+emented as p+anned, inc+"din# a++ interaces 9(", ("r:. T!e +atest parameter recommendations FreE s!o"+d e re/ie)ed and imp+emented eore "rt!er optimisation. A !istor5 o t!e parameter c!an#es into t!e net)or* a consistenc5 dataase or a++ parameters s!o"+d e a/ai+a+e. Mass modiications are possi+e )it! No*ia P+an $ditor 9see detai+s in
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Neibor Consistency cecks Nei#!o"r imp+ementation s!o"+d e c!ec*ed so t!at it is as p+anned in order to !a/e proper ce++ rese+ection and &;O "nctiona+it5. Nei#!o"rs s!o"+d e idirectiona+. Nei#!o"r p+an can e c!ec*ed "sin# 3G Netp+an too+ F3. T!e p"rpose )it! t!is too+ is to #rap!ica++5 disp+a5 ce++s, )!ic! are "sin# t!e same D< scram+in# code and to s!o) its nei#!o"rs deined in O&& dataase.
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Cell load cecks Ce++ +oad can e c!ec*ed 5 +oo*in# at t!e 2< intererence sit"ation )it! Pr>Noise co"nter in eac! ce++. Norma++5 t!e Pr>Noise is aro"nd I10'J10 dm, "t i it is more t!an t!is, t!ere is somet!in# )ron# in t!e ce++. T!e reason co"+d e e>terna+ intererence, or incorrect M;A parameters.
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T!e tota+ +oad in 2< and D< 9Pt>Tota+, Pr>Tota+: s!o"+d e +ess t!an 9Pt>Tar#et, Pr>Tar#et:, ot!er)ise t!e ce++ is o/er+oaded. No*ia $O& Reportin# &o+"tion 9R&: F4 can e "sed or t!is c!ec*. A+ternati/e+5 NetAct Reporter too+s Fre can e "sed to e>tract t!e data rom t!e NetAct dataase. -.3
R(N Conter and %&I cecks Perormance can e seen rom t!e RAN co"nter statistics. T!e most important 6P(s )it! recommended tar#et /a+"es are e+o) •
Ce++ a/ai+ai+it5, ?8 K
•
RRC set"p and access comp+ete ratio, ? K
•
RA set"p and access comp+ete ratio, ? K
•
RA drop rate or /oice, L 3 K
•
RA drop rate or ot!ers,L 4 K
$O& R& too+ can e "sed to c!ec* co"nters and 6P(s. &ee 6P( ino rom dierent pro=ects F4. A+ternati/e t!ese co"nters can e e>tracted "sin# t!e NetAct Reporter too+s Fre. 3..1
Ce++ A/ai+ai+it5 Wit! t!e ce++ a/ai+ai+it5 ino it is c!ec*ed t!at t!e ce++ is "p and r"nnin#. ( not t!e T& restart is needed. $o& Repotin# &o+"tion 9R&: reports co"+d e "sed to to c!ec* t!e ce++ a/ai+ai+it5. A+so c"stomer comp+ains and P+anner ino )i++ !e+p to ind s+eepin# ce++s. More ino ao"t ce++ a/ai+ai+it5 deinition is in reerence F4
3..'
RRC set"p and access comp+ete ratio T!is P( #i/es s"ccess rate or t!e RRC esta+is!ment. T!is is 6P( or ca++ set"p perormance, )!ic! is a/ai+a+e in $O& R& reports. More ino ao"t !o) t!is is ca+c"+ated is in reerence F.
3..3
RA set"p and access comp+ete ratio T!is P( #i/es s"ccess rate or t!e RA esta+is!ment I t!is !o)e/er is not Ca++ &et"p &"ccess Rate as it does not inc+"de RRC p!ase. More ino ao"t !o) t!is is ca+c"+ated is in reerence F.
3..4
RA drop ratio T!is P( can e "sed as dropped ca++ rate. More ino ao"t !o) t!is is ca+c"+ated is reerence F
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"# &erformance ceck T!e 2$ e!a/io"r mi#!t aect t!e net)or* perormance its recommended to test in a contro++ed en/ironment t!e 2$ perormance or a++ t!e ser/ices, re+ated to
4.
•
Ce++ rese+ection
•
&;O
•
Po)er Contro+
&#R+R(NC# C#C% $IT +I#'! #(*"R##NT* -or Perormance c!ec* dri/e tests are t5pica++5 needed. T!e set o ce++s and meas"rement ro"te s!o"+d e deined irst 9t5pica++5 101 sites, a++ ce++s m"st e meas"red:. Wit! dri/e test meas"rements asic 6P(s can e /eriied. An e>amp+e o 6P(s and tar#et /a+"es are +isted e+o), see more ino ao"t deinitions o t!ose in F. )ateory Name of te tests Taret 1. &erformance tests 5ale Ca++ set"p s"ccess rate or Voice ?4.0 K Ca++ set"p s"ccess rate or C& 4 *its%s Data ?'.0 K &ession set"p s"ccess rate or P& 4 *its%s Data ?'.0 K Ca++ drop rate or Voice L 4.0 K Ca++ drop rate or C& 4 *its%s Data L 4.0 K &ession drop date or P& 4 *its%s data L 4.0 K 2. Co6erae tests Depends on t!e p+annin# criteria, s"##estions e+o) CP(C; R&CP ? dm CP(C; $cNo 1' d -. Capacity tests T!ro"#!p"t Ro"nd trip de+a5 or P& data D< 4 *ps 0 *its%s Ro"nd trip time or 3' 5tes pin# L ''0 ms -. Time Tests Ca++ &et"p Time or speec! and C& data 9MOC: Ca++ &et"p time L7s &ession &et"p Time or P& 4 *its%s Data L 10 s Ta+e 1 $>amp+e 6P(s rom Dri/e &"r/e5s
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T& 10 &TII*(TIN (CTI5ITI#* T I&R5# C('' &#R+R(NC# T!ese acti/ities are sp+it into •
Common perormance iss"es t!at aect an5 ser/ice
•
Voice 9AMR: ca++ perormance
•
C& Video ca++ perormance
•
P& ca++ perormance
•
(&;O perormance
T!ere can e sit"ations )!ere t!e same pro+em )i++ ca"se ca++ set"p ai+"res or ca++ drops. T!e +ist o pro+ems )it! possi+e so+"tions is +isted e+o), startin# )it! t!e most important ones. 3.1
Common Call &erformance Isses e!a/io"r Ca++ set"p ai+"re Ca++ drop
Pro+em Poor co/era#e area
Description ( pro+em is poor co/era#e, t!is means poor R&CP 9L? dm: t!"s a+so t!e $cNo de#rades /er5 rapid+5 9L 1' d: )!en t!e co/era#e order is reac!ed.
Possi+e so+"tions C!ec* Antenna +ine insta++ation 9antenna position and "a+it5, ca+e +en#t! and "a+it5:. C!ec* t!at CP(C; po)ers are a+anced et)een t!e st"died ce++s. C!ec* presence o s!ado)in# ostac+es.
Ca++ set"p ai+"re Ca++ drop
Poor dominance area.
No main ser/er in t!e area, too man5 ce++s )it! )ea* CP(C; +e/e+. CP(C; $cNo is "s"a++5 /er5 ad e/en t!e R&CP is #ood e.. R&CP I80J?0 dm "t $cNo ao"t I10 d
Add a site to t!e area. 2se "i+din#s and ot!er en/ironmenta+ str"ct"res to iso+ate ce++9s: co/era#e. Do)n ti+t antennas to ma*e ce++s dominant and +imit eects o intererin# ce++9s:. C!ec* antenna earin#.
Ca++ set"p ai+"re Ca++ drop
Pi+ot Po++"tion
ad CP(C; $c%(o 9L1' d: +e/e+ a+t!o"#! CP(C; R&CP +e/e+ is #ood. ;i#! site in t!e nei#!o"r!ood ma5 ca"se intererence.
Add a site. -ind intererin# ce++ rom &canner res"+ts. Ad="st antenna earin# and do)n ti+t or +o)er t!e antenna !ei#!t 9too m"c! ti+t )i++ rea* t!e dominance:. Add intererin# ce++ to t!e nei#!o"r o t!e ser/in# ce++.
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e!a/io"r Dropped ca++%&;O ai+"re
Ca++ set"p -ai+"re Ca++ drop
Pro+em Missin# nei#!o"r
;i#! Pr>Tota+ d"e to 2< $>terna+ intererence
Description A #ood "sa+e nei#!o"r is present )it!in ce++s co/era#e area, can ca"se D< intererence i it is not in t!e acti/e set. &)apped sectors in WT&. T!e Pr>Tota+ +e/e+ is si#niicant+5 !i#!er t!an e>pected in no%+o) +oad conditions.
Possi+e so+"tions C!ec* scanner data and +oo* or missin# nei#!o"rs. C!ec* t!e ca+in# in antenna +ine.
Tr5 to i#"re t!e possi+e area%direction o t!e intererence 5 c!ec*in# Pr>Tota+ +e/e+ on nei#!o"rin# ce++s. A+ternati/e+5 "se spectr"m ana+5ser directi/e antenna to +ocate intererer. (norm operator%re#"+ator ao"t t!e o"nd conditions. C!ec* i a"to t"nin# ran#e is +ar#e eno"#! 9'0 d:.
Ca++ set"p ai+"re Ca++ drop
;i#! Pr>Toata+ d"e to )ron# M;A settin#s
T!e Pr>Tota+ +e/e+ is si#niicant+5 !i#!er t!an e>pected in no%+o) +oad conditions. M;A settin#s s!o"+d e c!ec*ed, see more in reerence F7
Ca++ set"p ai+"re Ca++ drop
;i#! Pr>tota+ d"e to (nsta++ation pro+ems
Ce++ set"p ai+"re
ad RRC connection set "p s"ccess rate d"e to s+o) 2e ce++ rese+ection
T!e Pr>Tota+ +e/e+ is si#niicant+5 !i#!er t!an e>pected in no%+o) +oad conditions. RRC connection set"p comp+ete messa#e not !eard 5 T&.
T!e /a+"e o Parameter N31' is too !i#! ma>im"m n"mer o Bin s5nc indications recei/ed rom <1 d"rin# t!e esta+is!ment o a p!5sica+ c!anne+
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(n case o M;A is "sed in T& c!ec* M;A and ca+es +oss parameters, ot!er)ise Pr>Tota+ /a+"e )i++ e too !i#!. 9( M;A parameter is set to ON, Ca+e +oss parameter is "sed, Ca+e +oss Rea+ M;A #ain -eeder +oss parameter: C!ec* t!e antenna insta++ation as t!e +ast a+ternati/e in !i#! Pr>Noise case. &et parameters so t!at rese+ection process )i++ start ear+ier "a+min, &intrasearc! and !5st' as per +atest recommendation F8 2se sma++er /a+"e N31' 9', recommendation is 4:. 2se Acti> or c!ec*in# t!e ca++ set"p de+a5 9<3 messa#es:. 2se ca++ set"p time optimisation eat"re D5namic settin# o BActi/ationTimeOset 9possi+e in RAN1..' $D': ena+es '00 to 00ms red"ction or set "p de+a5.
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e!a/io"r Dropped ca++
Dropped ca++
Dropped ca++
Dropped ca++
Dropped ca++%&;O ai+"re
3.2
Pro+em &;O to )ron# ce++ )i++ ca"se drop ca++.
Description O/ers!ootin# ce++ come temporari+5 into acti/e set and orces a s"ita+e ser/in# ce++ to e dropped o"t. po)er is rom 2< not eno"#! or tar#et intererence D< ce++ s5nc!ronisation, t!e 9CP(C;: &;O ai+s )!ic! )i++ co/era#e m"c! ca"se ca++ drop +ater. i##er t!an 2< co/era#e D< CP(C; Ce++ )it! +o)er CP(C; co/era#e L 2< po)er t!an t!e co/era#e s"rro"ndin# is !a/in# Btoo #ood 2< perormance, as t!is ce++s 2< cannot e "sed eicient+5 d"e to &;O is decided "pon D< 9CP(C; $c%No:. Ro"nd t!e corner T!e ca++ drops d"e to eect too rapid CP(C; co/era#e de#radation or Ce++ A, and t!ereore t!ere is not eno"#! time or &;O. Too man5 nei#!o"rs
(n &;O area t!e n"mer o comined nei#!o"rin# ce++s ecome more t!an 31. ;O +ist is created "sin# RNC a+#orit!m in t!e ina+ sta#e some o t!e nei#!o"rs )i++ random+5 e remo/ed.
Possi+e so+"tions Pan a)a5 o/ers!ootin# ce++ i it is too c+ose to t!e ser/in# ce++, ot!er)ise app+5 do)n ti+tin# as )e++.
2se ce++ indi/id"a+ oset 9ne#ati/e /a+"e: parameter to a+ance t!e D< and 2< co/era#e. C!ec* traic direction o incar 2$s to decide )!ic! ce++ re"ires osets. 2se ce++ indi/id"a+ oset 9positi/e /a+"e: parameter to a+ance t!e D< and 2< co/era#e. Note Ce++ indi/id"a+ osets are not ta*en into acco"nt )!en ca+c"+atin# t!e added ce++ T> po)er.
2se ce++ indi/id"a+ oset 9positi/e /a+"e: parameter to a+ance t!e D< and 2< co/era#e. Note Ce++ indi/id"a+ osets are not ta*en into acco"nt )!en ca+c"+atin# t!e added ce++ T> po)er. De+ete "nnecessar5 nei#!o"rs. (mpro/e dominance.
5oice 7(R8 specific performance Isses No AMR &peciic scenarios
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5ideo Call &erformance Isses e!a/io"r Dropped ca++
Pro+em Not eno"#! D< po)er to maintain #ood "a+it5
Description C& /ideo connection needs more po)er to maintain t!e &(R tar#et and t!"s a+so <$R tar#et.
Possi+e so+"tions (ncrease t!e ma> D< Radio po)er increment is a +ot 9Q3d: t!en t!e minim"m po)er is increased 5 3d as )e++ )!ic! can +ead to t!e minim"m po)er pro+ems 9T& sendin# too m"c! po)er to t!e 2$s c+ose to t!e T& and t!ereore ca"sin# pro+ems to t!e 2$ and e/en dropped ca++: T!ereore t!e PCran#eD< parameter s!o"+d e t"ned accordin# to t!e CP(C;toReRaOset parameter t"nin# 9rom t!e dea"+t: More ino in reerence F?.
Ca++ set "p -ai+"re Ca++ drop
;i#! Pr>Tota+ d"e to 2< $>terna+ intererence
T!e Pr>Tota+ +e/e+ is si#niicant+5 !i#!er t!an e>pected in no%+o) +oad conditions.
Tr5 to i#"re t!e possi+e area%direction o t!e intererence 5 c!ec*in# Pr>Tota+ +e/e+ on nei#!o"rin# ce++s. A+ternati/e+5 "se spectr"m ana+5ser directi/e antenna to +ocate intererer. (norm operator%re#"+ator ao"t t!e o"nd conditions. C!ec* i a"tot"nin# ran#e is +ar#e eno"#! 9'0 d:.
3.4
&* Call &erformance Isses P& ca++ perormance optimisation aims to ma>imise t!e data t!ro"#!p"t. T!ro"#!p"t depends /er5 m"c! on t!e ro"nd trip time 9RTT, de+a5 rom moi+e, t5pica++5 t!ro"#! 2& , connector to ser/er and ac*:. T!e +o)er t!e RTT t!e #reater t!e potentia+ or !i#!er t!ro"#!p"t. Norma++5 RTT is aro"nd '00ms. A+so t!e radio reso"rce eicienc5 or certain it rate s!o"+d e optimised, s"c! t!at reso"rces )i++ on+5 e a++ocated )!en needed, ased on t!e t!ro"#!p"t demand. T!is can e optimised )it! D5namic imisin# P& t!ro"#!p"t, "t e/er5 net)or*s needs some +oca+ optimisation. T!ro"#!p"t a+so /aries )it! 2$s t5pes. © Nokia Networks 2004, Company Confidential
Pa#e 11 o '0
e+o) are t!e t!ro"#!p"t and eicienc5 speciic pro+ems and so+"tions, a+t!o"#! t!e common ca++ perormance iss"es a+so app+5. /ea6ior
&roblem T!e 2ser it rate is m"c! +ess t!an t!e Radio earer it rate eit!er in D< or 2<.
T!e 2ser it rate is m"c! +ess t!an t!e Radio earer it rate in idirectiona+ i+e.
T!e 2ser it rate is m"c! +ess t!an t!e Radio earer it rate in idirectiona+ i+e.
!escription T!e reason or +o)er t!ro"#!p"t pro+ems in i+e transer is in +o) contro+ et)een PC and 2$ )!ic! co"+d mean t!at TCP parameter settin#s are not optim"m, )!ic! ma5 ca"se de#radation to t!e t!ro"#!p"t F10
W!en "p+oads and do)n+oads are occ"rrin# sim"+taneo"s+5 t!en t!e TCP AC6s 9or t!e do)n+oadin#: are competin# )it! t!e "p+oad traic to #et across t!e PPP +in* et)een t!e PC and 2$. T!is competition in comination )it! t!e +o) contro+ insti#ated 5 t!e 2$ )i++ de+a5 t!e AC6. Dependin# on !o) i# t!e e>tra de+a5 is )i++ depend on !o) m"c! TCP )i++ e orced to s+o) do)n. PC !as +ots o data to send in "p+in* direction at a rate aster t!an t!e act"a+ radio interace et)een 2$ and T& 94 *it%s:. To pre/ent o/er+o), 2$ t"rns +o) contro+ on to)ards PC to stop data +o). T!e pro+em is t!at t!is
© Nokia Networks 2004, Company Confidential
&ossible soltions Meas"re t!ro"#!p"t and RTT. (ncrease TCP Windo) &i@e RW(N in case RTT is m"c! more t!an '00ms and +o) t!ro"#!p"t !as een ac!ie/ed. (n Windo)s '000 t!e dea"+t /a+"e is 17'0 5tes. T!ere are man5 too+s a/ai+a+e to c!an#e t!e )indo) si@e, or e>amp+e DoctorTCP F13. Optima+ RW(N in c+ient 3'0 Optima+ RW(N in ser/er 3 &ee more in reerence F11. Meas"re t!ro"#!p"t and RTT (ncrease TCP Windo) &i@e RW(N in case RTT is m"c! more t!an '00ms and +o) t!ro"#!p"t !as een #ot. (n Windo)s '000 t!is !as dea"+t /a+"e o 17'0 5tes. Optima+ RW(N in c+ient 3'0 Optima+ RW(N in ser/er 3 &ee reerence F11. Meas"re t!ro"#!p"t and RTT (ncrease TCP Windo) &i@e RW(N in case RTT is m"c! more t!an '00ms and +o) t!ro"#!p"t !as een #ot. (Windo)s '000 as Pa#e 1' o '0
/ea6ior
&roblem
T!e 2ser it rate is m"c! +ess t!an t!e Radio earer it rate eit!er in D< or 2<.
T!e 2ser it rate is m"c! +ess t!an t!e Radio earer it rate in idirectiona+ i+e
T!e 2ser it rate is m"c! +ess t!an t!e Radio earer it rate in idirectiona+ i+e T& Po)er reso"rces are )asted in case !i#! it rates are "sed "t t!ro"#!p"t is +o).
!escription stops a+so TCP AC6 or do)n+in* data, sent in "p+in* direction. T!is ca"ses do)n+in* t!ro"#!p"t red"ction, eca"se TCP session 9tp: is not recei/in# AC6s so "ic*+5. T!e p!enomenon is i##er, i t!e D< data rate is aster t!an 2< data rate. T!e reason or +o)er t!ro"#!p"t pro+ems in i+e transer co"+d e )ron# parameters in ser/er.
T!ere is Pro+em in -TP ser/er
&ossible soltions dea"+t /a+"e o 17'0 5tes. Optima+ RW(N in c+ient 3'0 Optima+ RW(N in ser/er 3 &ee reerence F11.
T"ne TCP parameters in t!e &er/er M&& Ma>im"m &e#ment &i@e 9in 5tes: TCP pa5+oad MT2 Ma>im"m Transmission 2nit 9in 5tes: (P pac*et si@e MT2 M&& TCP ;eader 9'0 5tes: (P ;eader 9'0 5tes: Optima+ MT2 in c+ient and ser/er 140 C!an#e t!e -TP ser/er. (n #enera+ -TP ser/er s!o"+d e +ocated ri#!t ater t!e GG&N 9not e!ind t!e p"+ic internet: so it )o"+d e recommended to !a/e test -TP ser/er +ocated ri#!t to t!e GG&N.
+"etoot! connection !as een "sed et)een 2$ and PC. D5namic
© Nokia Networks 2004, Company Confidential
Ma*e se/era+ -TP sessions instead o one to increase t!e t!ro"#!p"t. Tr5 )it! stream e.#. !ttp%%))it/.com 2se 2& connection instead o +"etoot!.
Ad="st t!e Pt>D parameter 9dea"+t /a+"e 0 dm as ma>im"m +in* po)er, optim"m settin# et)een 337dm: to tri##er D5
Pa#e 13 o '0
3.3
.
I* performance /ea6ior Ca++ drop
&roblem RAN is not )or*in# correct+5 d"rin# &;O.
Ca++ drop
-ai+"re to decode &(C eore t!e ca++ drop.
Ca++ drop
-ai+"re to decode &(C eore t!e ca++ drop.
!escription No G&M nei#!o"r +ist is sent or meas"rements in case t!ere are 3 ce++s in Acti/e &et. 9RAN1..' $D1 CD18: CM starts too +ate
&(C /eriication ta*es too m"c! time.
&ossible soltions T!is s!o"+d e corrected in +aterRAN re+ease9s:.
&et !i#!er (&;O t!res!o+ds, -MC& CP(C; $cNo, CP(C; R&CP, 2$ TH P)r F8 &et sma++er meas"rement time or G&M ce++s, -MCG Ma>im"m meas"rement period, Minim"m meas"rement inter/a+, F8
&TII*(TIN T'* Too+s t!at can e "sed or pro+em so+/in#, /eriication and perormance impro/ement are descried e+o). -or c!ec*+ist part t!e too+s )ere a+read5 mentioned.
.1
Nokia (pplication 'ancer 7('8 No*ia A< is part o NetAct too+s. (nside A< t!ere are man5 too+s, +i*e o=ect ro)ser and ce++ +oad monitorin# too+s t!at are "se"+ optimisation too+s. Wit! Radio Net)or* 9RNW: O=ect ro)ser parameter modiications and /a+"e c!ec*s is possi+e. Wit! RNW On+ine Mana#ement too+ ce++ +oad on+ine monitorin# co"+d e o++o)ed. More ino in reerence F'
.1.1
RNW O=ect ro)ser O=ect ro)ser is too+ or t!e WCDMA parameter c!an#in# and c!ec*in#. Parameters are di/ided into dierent cate#ories •
RNC parameters, RNC
•
WT& parameters, WT&
•
Ce++ parameters, WC$<
•
Nei#!o"r parameters, ADS& 9ADS(, ADSG:
•
;ando/er parameters, ;OP& 9;OP(, ;OPG:
•
Meas"rement contro+ parameters, -MC& 9-MC(, -MCG:
T!ere are dierent sets or (ntra-re"enc5 9mar*et as >>>&:, (nter-re"enc5 9mar*et as >>>(: and (nter&5stem 9mar*et as >>>G: parameters or ADS>, ;OP> and -MC> o=ects. © Nokia Networks 2004, Company Confidential
Pa#e 14 o '0
(n WC$< o=ect t!e parameters are more di/ided into cate#ories +isted e+o) •
Genera+ 9identit5:
•
;ando/er contro+, ;O
•
Po)er contro+, PC
•
.1.'
Admission contro+, AC
•
•
Pac*et sc!ed"+er, P&
•
Common c!anne+, CC;
•
&5stem (normation +oc*, &(
RNW On+ine Mana#ement On+ine Monitorin# too+ s!o)s t!e act"a+ ce++ +e/e+ +oad sit"ation ot! in 2< and D< direction. ot! t!e meas"rement res"+ts and parameter /a+"es co"+d e seen on #rap!ica+ "ser interace. T!e /a+"es in G2( are
.2
•
Pr>Tota+ 9tota+ 2< +oad, meas"red /a+"e:
•
Pt>Tota+ 9tota+ D< +oad, meas"red /a+"e:
•
Pr>Noise, noise +e/e+, meas"red /a+"e
•
Pr>Tar#et, p+anned tar#et r> +oad o t!e ce++
•
Pt>Tar#et, p+anned tar#et t> +oad o t!e ce++
Nokia &lan #ditor P+an $ditor is an o+ine too+ or manip"+atin# Radio Access re+ated parameters and p+ans. P+an $ditor is a part o Radio Access Coni#"rator 9RAC: so+"tion. P+an $ditor eat"res s"pport dai+5 tas*s in net)or* de/e+opment and optimisation e.#. inte#ratin# ne) sites, or de+etin# o=ects, or optimisin# parameter /a+"es. T!ere is P+an $ditor pac*a#e s"pport or O&&3.1 $D', )!ere Radio Access Coni#"rator !as "pdated "nctiona+it5 or mana#in# 3G RN1..' and 'G &10. $D parameter data. (n addition to 3G RN1..' parameters s"pported ear+ier, P+an $ditor a+so s"pports common 'G && o=ects t!at can e "sed or deinin# inters5stem ad=acenc5 re+ations 9(&;O:. T!ere are a+so ne) re!ostin# re+ated proi+es and added "nctiona+it5. AHC C'.0 is s"pported or t!e parameters deined in t!e commissionin# interace and more "nctiona+it5 )i++ come )it! RN1..' $D'. More inormation in reerence F1 and F14
.-
#* Reportin *oltion 7R*8 $O& R& is too+ de/e+oped or interna+ "se, )!ic! !as #ood RAN co"nter and 6P( reportin#. (t needs NetAct dataase to e insta++ed to t!e net)or* as it )or*s )it! co"nters co++ected © Nokia Networks 2004, Company Confidential
Pa#e 1 o '0
rom t!e net)or* e+ements and stored in t!e dataase. PC is re"ired r"n t!e too+ and #et ino rom t!e dataase. T!e o++o)in# 6P(s can e retrie/ed "sin# t!e too+. •
Ce++ A/ai+ai+it5
•
RRC &et"p &"ccess Rate
•
RRC &et"p and Access &"ccess Rate
•
RRC Drop Ratio
•
RA &et"p &"ccess Rate
•
RA &et"p and Access &"ccess Rate
•
RA Drop Ratio
•
&;O o/er!ead
•
&;O &"ccess ratio
•
A+so ce++ +oad ino 9Pr>Tota+, Pt>Tota+: can e c!ec*ed.
More inormation is in reerence F4 and F. .4
Net(ct Reporter NetAct reporter is t!e oicia+ reportin# "nctiona+it5 or No*ia NetAct p+atorm. Too+s inc+"de 6P( ro)ser, Report "i+der and Report ro)ser. T!ese too+s a++o) data e>traction rom t!e PM Dataase and are standard to t!e No*ia NetAct p+atorm. A+so, Content Creation #ro"p )it!in No*ia !a/e de/e+oped WCDMA Reportin# &"ite, )!ic! "ses NetAct Reporter "nctiona+it5. T!is is an optiona+ eat"re so not a++ c"stomers )i++ !a/e p"rc!ased it. 2n+i*e t!e $O& R& t!e 6P(s reports or RAN are not read5 made a+t!o"#! t!e5 co"+d e created )it! Report "i+der.
.3
+ield easrement Tools 7+T8 T!ere are a #ro)in# n"mer o -MT a/ai+a+e or WCDMA s5stems. T!ese are di/ided into scanner too+s or 2e ased meas"rements too+s. ot! t!ese t5pes p+a5 a *e5 ro+e in t!e optimisation o t!e net)or*. A re/ie) o too+s can e o"nd at F1.
..1
R- scanner T!e p"rpose o "sin# t!e R- scanner is to e a+e to scan and meas"re a++ "sed carriers%ce++s and t!eir correspondin# D< scram+in# codes. T!is #i/es t!e "++ pict"re o t!e 9on air: radio net)or* )it!in a se+ected re"enc5 and. T!e res"+ts are "sed to identi5 and "nderstand reasons or pec"+iar e!a/io"r disco/ered d"rin# ie+d meas"rements. (n addition, t!e scanner )i++ indicate presence o Bi++e#a+ R- intererence )it!in t!e s" ands a++ocated to t!e net)or*. T!e scanner data ana+5ses can e done or man5 p"rposes •
-or +o) co/era#e areas © Nokia Networks 2004, Company Confidential
Pa#e 1 o '0
•
-or antenna insta++ation pro+ems
•
-or missin# nei#!o"rs
•
-or co/era#e optimisation
Wit! t!e scanner 5o" can #et t!e o++o)in# ino rom t!e s"rro"ndin# ce++s •
Dierent &cram+in# codes
•
CPC(; R&CP /a+"e 9dm:
•
CP(C; $cNo /a+"e 9d:
More inormation is in reerence F1'. ..'
N$MO TOM Dri/e Test too+ T!e N$MO DT too+ )it! t!e No*ia 0 2$ is "sed to meas"re and /eri5 +on# and s!ort AMR 1'.' *ps 9/oice: MOC ca++s. Wit! TOM 6P( /eriication can e done. I
)&* recei6er
'aptop compter
Carer
!C9(C con6erter 712 5!C92-0 5(C8
12 5!C 7Car battery8
2$ meas"rements are dierent t!an to R- scanner meas"rements. T!e &canner meas"res a++ &Cs, )!ereas t!e 2$ on+5 meas"res &C si#na+s rom t!e ce++s t!at t!e s5stem !as inormed%ordered t!e 2$ t!ro"#! t!e C; 9nei#!o"r +ist: or /ia t!e Bmeas"rement contro+ messa#e. Wit! TOM 5o" can #et o++o)in# ino •
T!e <$R do)n+in*
•
Carrier R&&(
•
Data T!ro"#!p"t Do)n+in*
•
Data T!ro"#!p"t 2p+in*
•
$c%No Acti/e Ce++ © Nokia Networks 2004, Company Confidential
Pa#e 17 o '0
•
$c%No Monitored Ce++
•
Pi+ot $R
•
Random Access (nitia+ T> Po)er
•
Random Access Pream+e Co"nt
•
Random Access Pream+e &tep
•
Random Access T> Po)er
•
&(R tar#et
•
2$ T> Po)er
•
Ca++ &tatistic AMR, C& and P& data ca++s
More inormation is in reerence F1'. .
(cti: (nalysis tool Acti> ana+5ser is a too+ or postprocessin# ce++"+ar net)or* data 9G&M, CDMA, WCDMA:. T!e too+ is speciica++5 tai+ored to import meas"rement data rom /ario"s 9meas"rement: too+s and i+e ormats and t!en present it in map, ta+e, )or*oo* or c!art ormat. A+so it is possi+e to deine 5o"r o)n speciic "eries, a+t!o"#! No*ia !a/e de/e+oped a standard set o "eries. Note t!at t!ere is more t!an one /ersion o t!e Ana+5ser. •
Ro++o"t Veriication &o+"tion 9RV&:
•
&5stem Veriication &o+"tion 9&V&:
•
(nrastr"ct"re Veriication &o+"tion 9(V&:
e+o) is a +ist o t!e capai+ities o Ana+5ser
Radio
• • •
•
$/ent Detection and Dri/e Test Ana+5sis
• •
• • •
O/era++ Ca++ Vie)
•
Distant ser/ers Too man5 ser/ers 2nnecessari+5 +ar#e nei#!o"r +ists $>cessi/e sot !ando Co/era#e pro+ems Poor 2< or D<, co/era#e +imited, intererence ;ando/er pro+ems Missin# nei#!o"rs Pi+ot po++"tion Detai+ed dropped ca++ and ai+ed set "p +e/e+ ana+5sis
© Nokia Networks 2004, Company Confidential
Pa#e 18 o '0
•
•
Nei#!o"r
•
•
•
&"pported Meas"rements )it! &canner are &"pported Meas"rements )it! ;andset are
•
•
•
Detected pro+em9s: identiied per ca++ (ndi/id"a+ ca++ e>traction or detai+ed messa#e +e/e+ ana+5sis Generation o recommendations or optima+ nei#!o"r +ist settin#s (nte#ration )it! Net)or* $+ement Dataase ased on 2MT&%WCDMA scanner dri/e test data
amp+e $c(o, R&CP, etc.: amp+e $cNo, T>Po), etc.: RRC
More inormation is in reerence F1'. ;.
R#+#R#NC#* F1
Pa#e 1? o '0
F1 NetAct Reporter oo*s!e+ F1 -MT ;omepa#e F17 RN1..'$D on NO<&
<.
)'**(R= NW C& P& &C &W 2$ N$D
Net)or* Circ"it &)itc!ed Pac*et &)itc!ed &cram+in# Code &ot)are 2ser $"ipment 9a*a M&: No*ia $+ectronic Doc"mentation
© Nokia Networks 2004, Company Confidential
Pa#e '0 o '0
