LTE Kpi Optimization case Study

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LTE Optimization workshop TelCel Mexico 2013

description

KPI optimization flowToolsLTE KPIGeneral KPI/Site status CheckMajor KPI / Ways of analyzingTest CasesBest Practices

Transcript of LTE Kpi Optimization case Study

LTE Optimization workshopTelCel Mexico 2013Rajko Hlisc|Ericsson Confidential|2013-11-14|Page 2

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Tools

'TE !P" (eneral !P")*ite stat+s C,eck Major !P" ) -a.s of anal.%ing

Test Cases /est Practices

0t,erAgendaRajko Hlisc|Ericsson Confidential|2013-11-14|Page 3Case 1: LOW HO Sucess ate on Co site !"1#$!!!%&!"1#$!!!$Co site case 0112300023011230003Rajko Hlisc|Ericsson Confidential|2013-11-14|Page 4 *ite &as s+ffering fro$ lo& H0 Exec+tion *+cess Rate4 5ft,er t,e c,ange &as $ade i$#ro6$ent can 7e o7ser6edCase 1: LOW HO Sucess ate on Co site !"1#$!!!%&!"1#$!!!$cell"ndi6id+al0ffsetE8tran c,anged fro$ 0 to 9 on 21 0ctRajko Hlisc|Ericsson Confidential|2013-11-14|Page 2Case %: O'ershooting cases(%%1"%)!!$Rajko Hlisc|Ericsson Confidential|2013-11-14|Page 9Case %:O'ershooting cases(%%1"%)!!$Electric Tilt C,anged fro$ 20 to 40 on 22 0ctRajko Hlisc|Ericsson Confidential|2013-11-14|Page :CASE $: *eigh+oring ce,, cases(%%-$-.!!1&$$.%!(%%.//$(1cell"ndi6id+al0ffsetE8tran c,anged fro$ 0 to 9 on 21 0ct and n+$7er of fail+re red+ced for relationsRajko Hlisc|Ericsson Confidential|2013-11-14|Page 1 ;83212 ,ad $an. ,ando6er exec+tion fail+res to sites &,ic, ,a6e ,ig,er ele6ation and are far a&a. fro$ it4 5ction taken< =or7idden ,ando6er 7et&een t,e$ 7. setting >is,oallo&ed? @ >isRe$o6e5llo&ed? to =5'*E4CASE.: O'ershooting neigh+our re,ationsRajko Hlisc|Ericsson Confidential|2013-11-14|Page A Pro7le$ started aro+nd 12-124142013 &it, onl. #re#aration#art of H0 7eing affected4 "n all cases nofail+res d+e to licenses or load or settings &ere fo+nd4 *o t,e onl. reason &as related to MME as t,e #ro7le$ is #re#aration #,ase not exec+tion4 "t &as fo+nd t,at RA ,ad #ro7le$s &it, one MME disa7led4 *econd MME s,ares traffic &it, first oneB so ne reC+est goes to one MME one reC+est goes to second MME &,ic, is disa7led4Case#: accesi+i,it0 issue in ) 5fter c,ecking t,e &orst #erfor$ersB e6er. single site ,as a neig,7or relation to a site &it, one MME disa7led4 5nd t,is relations is generating t,e $ost fail+res4 5fter t,e MME &ere fixedB iss+e got resol6ed4Rajko Hlisc|Ericsson Confidential|2013-11-14|Page 10Parameter BaselineNew RecommendationpZeroNominalPucch(1%! (11.pZeroNominalPusch(1!/ (1!!MO Class Name Parameter Name Parameter DescriptionE8tranCell=DD #EeroFo$inalP+cc, T,e no$inal co$#onent of t,e 8E trans$it #o&er for P,.sical 8#link Control C,annel GP8CCHH4E8tranCell=DD #EeroFo$inalP+sc, T,e no$inal co$#onent of t,e 8E trans$it #o&er for P,.sical 8#link *,ared C,annel GP8*CHH4Case /: 12CCH 3 12SCH *omina, High 2L SS4 on Ce,,5 p6ero*omina,1ucch and p6ero*omina,1usch were increased to mitigate impact o7 high SS4 on the sector:Rajko Hlisc|Ericsson Confidential|2013-11-14|Page 11Case/: 12CCH 3 12SCH *omina,C,ange dateRajko Hlisc|Ericsson Confidential|2013-11-14|Page 12 Dro# in accessi7ilit. &as noticed in cl+ster MEI0124 Dro# in accessi7ilit. &as on t,e RRC #art &,ic, can #oint to license iss+es4 /iggest contri7+tor to t,is &as D=0213'2100 &,ic, ,ad li$ited n+$7er of C8'4 T,is iss+e also affected H0 #re#aration #,ase of Cl+ster MEI012CASE-: Accesi+i,t0 issues do to C2L 218A9ERajko Hlisc|Ericsson Confidential|2013-11-14|Page 13 /elo& sna#s,ot is s,o&ingt,e RRC Failures due to License4 5fter t,e reco$$endation and+#grade of t,e 'icense ca#acit. at t,e Fode D=0213'2100B iss+e &as sol6ed4CASE-: Accesi+i,t0 issues do to C2L 218A9ERajko Hlisc|Ericsson Confidential|2013-11-14|Page 14 T&o sectors on t,e site D'0904'2100 &ent do&n d+e to trans$ission iss+es as seen 7. t,e 0** log4 /+t &,en t,e trans$ission &as reesta7lis,ed t,e cell didnJt co$e 7ack on line and sta.ed in 8'0C!ED)D"*5/E'D *tate4 5fter t,e cell &as locked)+nlocked all t,e cells ca$e +#B and t,e site &as #erfor$ing nor$all.4CASE": AcCessi+i,it0 issues due to Ce,, StatusRajko Hlisc|Ericsson Confidential|2013-11-14|Page 12 *ite ;81122'2100 ,ad ,+ge dro# and ,+ge R**" #ro7le$s FD* c,ecked t,e site and RR8 and fo+nd not iss+es4 T,is $eant t,e iss+es &as on antenna4 5fter site 6isit it &as fo+nd t,at K*-R &as 6er. lo& on sector 34 Reason &as fa+lt. j+$#er ca7le4 5fter re#lace$ent iss+e &as fixed4Case): High drop rate;81122'2100L 130A02-10