Activation and de-Activation of TTI Bundling Mode for Cell-edge
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Transcript of Activation and de-Activation of TTI Bundling Mode for Cell-edge
8/10/2019 Activation and de-Activation of TTI Bundling Mode for Cell-edge
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RRM.5120 TEST CASE DESCRIPTION
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Activation and de-activation of TTI bundin! "ode fo# ce-ed!e $E%
Pu#&o%e' The purpose of test case is to demonstrate switch to TTI bundling for Ues on cell-edge in power
limit in lab environment.1. Trigger events will be simulated in lab environment and switch from normal mode to TTI
bundling will be verified.2. Ue leaves cell edge and is in good radio condition. Switching from TTI bundling to normalmode will be verified.
Ab%t#act' UE is in good radio conditions and due to high MS the measurements to start TTI
bundling are not started !et b! e"# although the measurements are activated for the
UE.
The UE moves to worse radio conditions and UE is transmitting with currentMS $%
eUl&a&owMcsThr. The UE moves to even worse radio conditions and "ac'ed T#
transmissions is greater than tti#undling"ac'Threshthe trigger conditions to activateTTI bundling are met.
Intra cell handover is initiated to activate TTI bundling.
Intra cell handover is e(ecuted and TTI bundling and TTI bundling measurements are
active.
U& data transfer for the UE is carried out using TTI #undling.
Measurements to stop TTI bundling are ongoing.
Intra cell handover has been e(ecuted and TTI #undling is applied for the UE in U&
data transfer.
Reated(eatu#e%'
• LTE907: TTI bundling
Reated%&ecification%'
TTI bundling is characterized by [3GPP T 3!"#$3% 3!"3#$&
Reateddocu"ent%' LTE 'adi( Access% 'el" 'L)0% *+erating ,(cu-entati(n% Issue 0$
library:
• .LTE 'L/0% eature ,escri+ti(ns1
o cha+ter .TTI 2undling1
Testacases:ield eri4icati(n Pr(cedure 4(r TTI 2undling
P#e#e)ui%ite%' Re)ui#ed Net*o#+ Ee"ent%, E)ui&"ent A"ount
• LTE e52 $
• 66E $
• AEG8 $
• LTE E ith TTI bundling ca+able $
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RRM.5120 TEST CASE DESCRIPTION
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• rel;% GI3 and 7< rel9 GI#;
• The relevant bit +(siti(ns in
4eatureGr(u+Indicat(rs di44er beteen
rel;c(-+liant Es and Es su++(rtingrel9 and higher"
• A++licati(n P= >E side% c(re side? #
• Tracer (n $@$$@!ainter4aces
• 2T l(g and e tracer
$ $
Additionainfo#"ation'
Docu"ent can!e i%to#'
/e#%ion Date Auto# Can!e%
<1.0> <08.04.2013>
<demx17f1>
<Initial version, ready for review>
<2.0> <6.11.2013> <demx17f1>
<review comments incororated>
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RRM.5120 TEST CASE DESCRIPTION
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1. Te%t Confi!u#ation
Net*o#+ ee"ent% in%t#u"entation and te#"ina% confi!u#ation
(i!u#e 1' ene#a %ce"e of te%t confi!u#ation
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RRM.5120 TEST CASE DESCRIPTION
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2. Setu& , Te%t P#e&a#ation 3ac+!#ound Info#"ation
2.1 3ac+!#ound Info#"ation
TTI 2undling (+erates in u+lin directi(n" Es are sitched int( TTI bundling i4 theradi( c(nditi(ns have deteri(rated such that 2LE' has increased bey(nd athresh(ld and available +(er is insu44icient 4(r trans-issi(n (n -(re than Bust a 4e
P'2s" The e52 c(n4igurati(n related t( the ECs bearer setu+ is d(ne ith(utres+ect t( TTI bundling" The e52 bearer -anage-ent 4uncti(ns are n(t aare (4 thecurrent radi( c(nditi(ns% and there4(re ad-issi(n c(ntr(l (+erates irres+ective (4 hether (r n(t the E is in g((d (r bad radi( c(nditi(ns" In +articular% this als(-eans that ad-issi(n c(ntr(l (+erates ith(ut c(nsiderati(n (4 hether (r n(t Esare in TTI bundling -(de" The -ain +ur+(se (4 TTI bundling is t( i-+r(ve linDuality 4(r (IP users at the cell edge"
*+erat(rs can de4ine hich =I classes shall be all(ed 4(r usage ithin TTIbundling -(de" The range (4 =Is c(ntains +rede4ined classes and als( (+erat(rde4ined classes% as +er the LTE)$; .*+erat(r s+eci4ic =I1 4eature" The selecti(n is
d(ne by setting en4(rceTti2undling t( FtrueC in the DciTab and the DciTab*+erat(r +ara-eter 4ields" It is assu-ed that (+erat(rs set the en4(rceTti2undling +ara-eter t( FtrueC (nly 4(r =I$ bearers (r (+erat(rde4ined bearers ith si-ilar thr(ugh+utand Duality de-ands as reDuired by v(ice trans-issi(n" Assu-ing adverse radi(c(nditi(ns ith T2 $// bit >and assu-ing 4(r the sae (4 this c(arse esti-ate thatthis includes $00 bits (4 user data?% and 4urther assu-ing that the E trans-its inevery scheduling (ccasi(n >) L grants +er # radi( 4ra-es% ,,?% #) bit@s is the-aHi-u- thr(ugh+ut eH+ectable in TTI bundling -(de" I4 the E is scheduled (nce+er # radi( 4ra-es >that is% (nce +er #0 -s?% this b(ils d(n t( ) bit@s" igures 4(r T,, are even l(er"I4% 4(r eHa-+le% a E is c(n4igured ith a =I$ bearer (4 a high bit rate enc(unters
bad radi( c(nditi(ns and runs int( +(er li-itati(n% the L thr(ugh+ut is li-ited bythe E hich then re+resents the b(ttlenec" In this case% the e52 d(es n(t deleteany bearer h(se thr(ugh+ut d(es n(t -eet c(n4igured -aHi-u-@average rates%n(r d(es the e52 +ri(ritize any bearer (ver (thers" It is the E here L+ri(ritizati(n taes +lace% and it is le4t t( the E s(4tare >(r the end user? t( deletebearers >(r t( cl(se a++licati(ns? that su44er 4r(- bad radi( c(nditi(ns t( anunacce+table degree"
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RRM.5120 TEST CASE DESCRIPTION
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2.2 Setu& , Te%t P#e&a#ation
Lab envir(n-ent: e under test is attached t( cellJ$" Path l(ss and L inter4erenceill be increased till e sitches t( TTI bundling" At least 2T l(g and e tracer ill be used t( -(nit(r sitch 4r(- n(r-al -(de t(TTI bundling and vice versa"
igure #:An eHa-+le sche-e (4 test c(n4igurati(n in lab
2.4 Settin! OM Pa#a"ete#%
Prec(nditi(n: EHtended +lin Lin Ada+tati(n -ust be activated% i"e" the L5=EL +ara-eteractlLnAd+ -ust be set t( FelLaC"
Pa#a"ete# Na"e Abb#eviation De%c#i&tion Ran!eMana!edobect
Activate TTI bundling actTti2undlingPara-eter t( activate (rdeactivate the TTI2undling 4eature in a cell
True@alse L5=EL
6aH nu-ber (4 LKA' trans-issi(nsduring TTI bundling
harD6aHTrlTti2undling
Indicates the -aHi-u-nu-ber (4 trans-issi(nsthat is c(n4igured 4(r a Ein TTI bundling (+erati(n"
/"""#;% ste+ / L5=EL
TTI bundling 2LE'thresh(ld
tti2undling2lerThresh(ld
=(ntr(ls the 2LE'thresh(ld 4(r sitching
Es 4r(- n(nbundling-(de int( TTI2undling-(de
;""")0 % ste+
$ &ab)11*
L5=EL
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RRM.5120 TEST CASE DESCRIPTION
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TTI bundling I5'thresh(ld
tti2undlinginrThresh(ld
I5' thresh(ld 4(rsitching Es 4r(- TTI2undling -(de int( n(nTTIbundling -(de
$0"""$0 d2%ste+ 0"$ d2&ab)+*
L5=EL
TTI bundling duringhand(ver-easure-ents
tti2undling,uringK(6eas
This +ara-eterdeter-ines hether TTIbundling -ay be startedvia intracell hand(verhile inter4reDuency (rinter'AT -easure-entsare (ng(ing"
True@alse L52T
Table $: *M6 +ara-eters related t( LTE907
Enabling@disabling (4 TTI bundling 4(r =I$9 and@(r (+erat(r c(n4igured =Is is
(+ti(nally -(di4ied i4 the +r(vided de4ault values (4 the !ci"a#$1%&' and!ci"a#(erator +ara-eters enforceTtiBundling are n(t a++r(+riate
igure 3: Activate TTI bundling (n L5=EL level
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igure /: TTI bundling thresh(lds
igure ): TTI bundling during hand(ver -easure-ents (n L52T level
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RRM.5120 TEST CASE DESCRIPTION
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igure !: en4(rce TTI bundling 4(r =I $
4. Te%t e6ecution , I"&e"entation
<Step 1-Activation of TTI bundling>
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RRM.5120 TEST CASE DESCRIPTION
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Acti(n @ In+ut
e under test establishes (LTE call >=I$? Path l(ss and inter4erence ill be
increased till e sitches t( TTI bundling"
6(nit(r nu-ber (4 es in TTI bundling -(de by 2T l(g:E.g. -, number of Ues in TTI bundling is increased from to 1)get"umfUeInTti#undlingMode/0) mueInTti#undlingMode) cellId) 33414+5ThreadI6)1+37 inc"umfUeInTti#undlingMode/0) new mueInTti#undlingMode) 1 ueonte(tId) 18 cellId)33414+
E TH +(er can be -(nit(red by e tracer"EH+ected 'esult @ *ut+ut
e under test sitches t( TTI bundling" Intracell hand(ver +er4(r-ed"
)*annel "ye + -))/, essae -ent* + 36 Interreted val5e -%))/%essae +
messae c1 rrc=(nnecti(n'ec(n4igurati(n
rrc%"ransactionIdentifier 1, criticalxtensions c1 rrc)onnectioneconfi5ration%r8
mo#ility)ontrolInfo
taret*ys)ellId 424, t304 ms1000, new%Identity 901100011 011011019:,
radioeso5rce)onfi)ommon
rac*%)onfi
ream#leInfo
n5m#er(f;%ream#les n40, ream#lesro5;)onfi
si=e(f;%ream#lesro5; n32, messaei=ero5; #144, messaeower(ffsetro5: d:10 ? ?, oweraminarameters
oweraminte d:2, ream#leInitialeceived"aretower d:m%&6 ?, ra%5ervisionInfo
ream#le"ransax n10, ra%esonse@indowi=e sf10, mac%)ontentionesol5tion"imer sf64 ?, max/;A%s3"x B ?, rac*%)onfi
roote!5enceIndex 30, rac*%)onfiInfo
rac*%)onfiIndex 3, *i*eedCla C;-, =ero)orrelationDone)onfi 12, rac*%Cre!(ffset B
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RRM.5120 TEST CASE DESCRIPTION
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? ?, 5sc*%)onfi)ommon
5sc*%)onfi:asic
n%: 1, *oinode inter5#Crame, 5sc*%/oin(ffset 6, ena#le64A; C;- ?, 5l%eferenceinals)/
ro5/oinna#led C;-, ro5;ssinment)/ 0, se!5ence/oinna#led C;-, cyclic*ift 0 ? ?, %ax 33, 5l%)yclicrefix-ent* len1
?, rac*%)onfiedicated
ra%ream#leIndex B2, ra%;)/%asEIndex 0 ? ?, radioeso5rce)onfiedicated
mac%ain)onfi exlicitFal5e
5l%)/%)onfi
max/;A%"x n8, eriodic:%"imer sf10, retx:%"imer sf320,
tti2undling T'E ?, time;linment"imeredicated sf10240 ?, *ysical)onfiedicated
5cc*%)onfiedicated
acEGacEeetition release G-- ?, c!i%eort)onfi
c!i%eortode;eriodic rm30, nom)/%%%(ffset 0, c!i%eorteriodic set5
c!i%))/%eso5rceIndex 12, c!i%mi%)onfiIndex 62, c!i%CormatIndicatoreriodic wide#and)AI G--, ri%)onfiIndex 1, sim5ltaneo5s;cEGacE;nd)AI " ? ?, sc*ed5line!5est)onfi set5
sr%))/%eso5rceIndex 18, sr%)onfiIndex 18, dsr%"ransax n64 ? ? ?, sec5rity)onfi/(
*andover"ye intra-"
sec5rity;lorit*m)onfi
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ci*erin;lorit*m eea2, interityrot;lorit*m eia2 ?, Eey)*aneIndicator C;-,
next/o)*ainin)o5nt 0 ? ? ? ?
?
<Step 2 – Deactivation of TTI bundling>
Acti(n @ In+ut Ue is in good radio condition.Ue9s SI": at least as good as before switching to TTI#.
EH+ected 'esult @ *ut+ut
witc* from ""I: mode to normal mode is triered. Intra%cell *andover erformed.
=hannel Ty+e ,LJ,==K% 6essage Length 39 Inter+reted P,:value ,L,==K6essage ::N
-essage c$ : rrc=(nnecti(n'ec(n4igurati(n :
N rrcTransacti(nIdenti4ier $% criticalEHtensi(ns c$ : rrc=(nnecti(n'ec(n4igurati(nr; :
N -(bility=(ntr(lIn4(
N targetPhys=ellId /#/%
t30/ -s$000% neEIdentity O00$0$0$0 $00$$0$0O2% radi('es(urce=(n4ig=(--(n
N rach=(n4ig
N +rea-bleIn4(
N nu-ber*4'APrea-bles n/0% +rea-blesGr(u+A=(n4ig
N size*4'APrea-blesGr(u+A n3#% -essageizeGr(u+A b$//% -essageP(er*44setGr(u+2 d2$0 % +(er'a-+ingPara-eters
N +(er'a-+ingte+ d2#% +rea-bleInitial'eceivedTargetP(er d2-9! % rau+ervisi(nIn4(
N +rea-bleTrans6aH n$0% ra'es+(nse8ind(ize s4$0% -ac=(ntenti(n'es(luti(nTi-er s4!/ % -aHKA'6sg3TH ) % +rach=(n4ig
N r((teDuenceIndeH 30% +rach=(n4igIn4(
N +rach=(n4igIndeH 3% high+eedlag ALE% zer(=(rrelati(nQ(ne=(n4ig $#%
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+rachreD*44set ) % +usch=(n4ig=(--(n
N
+usch=(n4ig2asicN
n2 $% h(++ing6(de interubra-e% +uschK(++ing*44set !% enable!/A6 ALE % ul'e4erenceignalsP=K
N gr(u+K(++ingEnabled ALE% gr(u+Assign-entP=K 0% seDuenceK(++ingEnabled ALE% cyclichi4t 0 % +6aH 33%
ul=yclicPre4iHLength len$ % rach=(n4ig,edicated
N raPrea-bleIndeH !3% raP'A=K6asIndeH 0 % radi('es(urce=(n4ig,edicated
N -ac6ain=(n4ig eH+licitalue :
N ul=K=(n4ig
N -aHKA'TH n)% +eri(dic2'Ti-er s4$0%
retH2'Ti-er s43#0% tti2undling ALE % drH=(n4ig setu+ :
N (n,urati(nTi-er +s4!% drHInactivityTi-er +s4/% drH'etrans-issi(nTi-er +s4/% l(ng,'R=ycletart*44set s4/0 : 3! % ti-eAlign-entTi-er,edicated s4$0#/0 % +hysical=(n4ig,edicated
N +ucch=(n4ig,edicated
N
ac5ac'e+etiti(n release : 5LL % cDi'e+(rt=(n4ig
N cDi'e+(rt6(deA+eri(dic r-30% n(-P,=K'EP'E*44set 0% cDi'e+(rtPeri(dic setu+ :
N cDiP==K'es(urceIndeH $#% cDi+-i=(n4igIndeH 7/% cDi(r-atIndicat(rPeri(dic ideband=I : 5LL% ri=(n4igIndeH $% si-ultane(usAc5acAnd=I T'E % scheduling'eDuest=(n4ig setu+ :
N srP==K'es(urceIndeH $;% sr=(n4igIndeH 30% dsrTrans6aH n!/
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% security=(n4igK*
N
hand(verTy+e intraLTE :N
securityAlg(rith-=(n4igN
ci+heringAlg(rith- eea#% integrityPr(tAlg(rith- eia# % ey=hangeIndicat(r ALE% neHtK(+=haining=(unt 0
7. I"&acted 8PI,Counte#%
Measurement t!pe &TE ell :esource
ounter group TTI bundling
TTI#U"6&I";M6EUE<=; >2
TTI#U"6&I";;:<"TS 2?1@
TTI#U"6&:ETE"TI"SA:T 1
TTI#U"6&:ETE"TI"ME6IUM 1
TTI#U"6&:ETE"TI"&";
6;0$$=!#@ Average nu-ber (4 Es c(n4igured 4(r TTI 2undling -(deThe -easure-ent +r(vides the average nu-ber (4 Es in TTI 2undling -(de +ersa-+le" Each instance (4 a E entering TTI 2undling 6(de during the -easure-entinterval is included in the average" Thus i4% 4(r eHa-+le% a single E is +laced in TTI2undling -(de three ti-es during the -easure-ent interval% all (4 the three
instances ill be included in the average"The re+(rted value is $00 ti-es higher than the actual value >4(r eHa-+le $"00 isst(red as $00?"
6;0$$=!3@ 5u-ber (4 L grants 4(r TTI 2undlingT(tal nu-ber (4 grants 4(r TTI 2undling"
6;0$$=!/@ h(rt E retenti(n ti-e in TTI 2undling -(de
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The -easure-ent re+resents the nu-ber (4 Es that are in TTI 2undling -(de 4(r(nly a sh(rt +eri(d (4 ti-e% hich is de4ined as less than t$ sec(nds% that is retenti(nti-e in TTI 2undling -(de S t$ sec"
6;0$$=!)@ 6ediu- E retenti(n ti-e in TTI 2undling -(deThe -easure-ent re+resents the nu-ber (4 Es that are in TTI 2undling -(de 4(r a-ediu- +eri(d (4 ti-e" This ti-e +eri(d is de4ined by a l(er b(und (4 t$ sec(ndsand an u++er b(und (4 t# sec(nds% that is retenti(n ti-e in TTI 2undling -(de: t$ SH S t# sec"
6;0$$=!!@ L(ng E retenti(n ti-e in TTI 2undling -(deThe -easure-ent re+resents the nu-ber (4 Es that are in TTI 2undling -(de 4(r al(ng +eri(d (4 ti-e% hich is de4ined as l(nger than t# sec(nds% that is retenti(n ti-ein TTI 2undling -(de t# sec"
5. Reated Me%%a!e (o*
9. E&io!ue
A4ter 4inishing the tests und( all changes d(ne t( test envir(n-ent and@(r set the+ara-eters bac t( the initial@de4ault values"
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D;.ther product names mentioned in this document ma! be trademar's of their respective companies and the! arementioned for identification purposes onl!.
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