Post on 05-Jul-2018
8/15/2019 Analysis Report on Low Paging Success Rate Due to CN Configuration [1]
1/14
Analysis Report on Low Paging Success Rate due to CNconfiguration
Internal Use only
Analysis Report on
Low Paging Success Rate due to CN
configuration
Drafted by: Nicole Ch’ng Joe
Huan (702394)
Date: 8/7/2011
Reviewed by: Date:
Reviewed by: Date:
Approved by: Date:
2016060! "UA#$I Confidential Page1% &otal1'
8/15/2019 Analysis Report on Low Paging Success Rate Due to CN Configuration [1]
2/14
Analysis Report on Low Paging Success Rate due to CNconfiguration
Internal Use only
Contents
Analysis Report on((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((1
Low Paging Success Rate due to CN configuration(((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((1
1. Po!le" #esci$tion(((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((()
2. Cause %nal&sis(((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((*
i( Para+eter and figure related to Paging Audit,(((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((*
-( Paging discard due to "ig. SPU flow control,((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((*
-i( LAC /oundary Planning and Configuration Audit,((((((((((((((((((((((((((((((((((((((((((((((((((((((((((
-ii( Paging Losses due to PC" C.annel Congestion at UU interface(((((((((((((((((((((((((((((((((
-iii( Paging Counter and PI Audit((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((10
i3( Inconsistent LAC Setting for certain cells in Core networ4((((((((((((((((((((((((((((((((((((((((((((11
3. 'uggestion an 'u""a&((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((1'
2016060! "UA#$I Confidential Page2% &otal1'
8/15/2019 Analysis Report on Low Paging Success Rate Due to CN Configuration [1]
3/14
Analysis Report on Low Paging Success Rate due to CNconfiguration
Internal Use only
1. Problem Description
n Count& *$eato H+ custo"e co"$laint on call access ,ailue in goo - conition.
o" CN CH- log checing+ the call is elease ue to this call has !een elease (no"al
call cleaing) !& su!sci!esel, !ecause ' i not eceie the Paging es$onse "essage
,o" u inte,ace.
o" $e,o"ance statistic+ the tens o, Paging 'uccess -ate in CN ae not "atch ith the
-NC. o" CN+ the Paging success ate is aeage 80 hile -NC Paging 'uccess ate is
aeage 50 onl&.
2016060! "UA#$I Confidential Page)% &otal1'
8/15/2019 Analysis Report on Low Paging Success Rate Due to CN Configuration [1]
4/14
Analysis Report on Low Paging Success Rate due to CNconfiguration
Internal Use only
igue 16 Paging 'uccess -ate in Coe neto
igue 2 6 Paging 'uccess -ate in -NC
2016060! "UA#$I Confidential Page'% &otal1'
8/15/2019 Analysis Report on Low Paging Success Rate Due to CN Configuration [1]
5/14
Analysis Report on Low Paging Success Rate due to CNconfiguration
Internal Use only
2. Cause Analysis
he anal&sis ste$s hae !een taen ae6
i.Paa"ete an ,igue elate to Paging %uit6
ii.Paging iscas ue to High 'P ,lo contol6
iii.%C :ouna& Planning an Con,iguation %uit6
i;.Paging osses ue to PCH Channel Congestion at inte,ace.
;.Paging Counte an
8/15/2019 Analysis Report on Low Paging Success Rate Due to CN Configuration [1]
6/14
Analysis Report on Low Paging Success Rate due to CNconfiguration
Internal Use only
igue 46 ;'.-%N%P.Pagingoss s Paging 'uccess -ate
=hen the 'P CP usage eaches cetain theshol+ the ,lo contol algoith" ill stat. t is
the !asic ,eatue in -NC to $otect the haae an sta!ilit& o, s&ste".
he Paging isca ue to ,lo contol ill tigge the "easue"ent on countes
%!.RANAP.CsPaging.&oss' %!.RANAP.PsPaging.&oss.
he ,lo contol theshol that elate to $aging can !e ,in as co""an !elo.
SET FCCPUTHD:BRDCLASS=XPU, SLPAGECTHD=80, SLPAGERTHD=70,
CPAGECTHD=90 , CPAGERTHD=75. he etail o, the $aa"ete can !e o!taine in a!le 1 6
lo Contol theshol $aa"ete that elate to $aging.
:ase on 'P loa checing+ PlaBa
8/15/2019 Analysis Report on Low Paging Success Rate Due to CN Configuration [1]
7/14
Analysis Report on Low Paging Success Rate due to CNconfiguration
Internal Use only
t&$e 2 "essage "ight !e u ,lo contol+ o high CP usage. , the -NC oes not es$on to
a $aging "essage that is consecutiel& etans"itte+ the -NC counts it onl& once.
a!le 2 6 lo Contol theshol $aa"ete that elate to $aging
Parameter )D Parameter
Name
Paa"ete #esci$tion
'P%A@CH# '' an C'
$age contol
theshol
eaning6 CP usage theshol ,o $aging ,lo contol
oe su$$le"enta& seices ('') an location seice
(C'). =hen the aeage CP usage o, sliing inos
eaches o eDcees the theshol+ '' an C' $aging
,lo contol is tiggee.
-eco""ene ;alue6 80
'P%A@-H# '' an C'
$age estoe
theshol
eaning6 CP usage theshol ,o ecoe& ,o" $aging
,lo contol oe su$$le"enta& seices an location
seice. =hen the aeage CP usage o, sliing inos
is loe than the theshol+ '' an C' $aging ,lo
contol is sto$$e.-eco""ene ;alue6 70
CP%A@CH# Call $age
contol
theshol
eaning6 CP usage theshol ,o call $aging contol.
=hen the aeage CP usage o, sliing inos eaches
o eDcees the theshol+ call $aging ,lo contol is
tiggee.
-eco""ene ;alue6 90
CP%A@-H# Call $age
estoe
theshol
eaning6 CP usage theshol ,o ecoe& ,o" call
$aging contol. =hen the aeage CP usage o, s"ooth
inos is loe than the theshol+ call $aging ,lo
contol is sto$$e.
2016060! "UA#$I Confidential Page!% &otal1'
8/15/2019 Analysis Report on Low Paging Success Rate Due to CN Configuration [1]
8/14
Analysis Report on Low Paging Success Rate due to CNconfiguration
Internal Use only
-eco""ene ;alue6 7
iii. &AC *oundary Planning and Configuration Audit:
%s neDt ste$+ the %C !ouna& $lanning an con,iguation is taen $lace.
@Dtact the %C in,o"ation ,o" co""an E%## C@'@PF an "ae a su""a& ta!le
as !elo6
&AC RNC
++, ++- rand /otal
9992 414 0 414
9993 353 0 353
9994 33 0 33
999 3 8
9995 5 714 720
9997 25 0 25
9999 0 1 1
Aan
otal
17 1270 284
o" the su""a& ta!le+ it is ,oun out thee ae 9 cells(%C999 an9995 in -NC 994)
that shae %C ith -NC 99. %,te ,uthe anal&sis+ 9 cells alea& eho"e ,o" -NC 994 to-NC 99. hose Cell in,o"ation haen’t !een elete ,o" -NC 994 onl&.
his in o, u$lication Cell in,o"ation in -NC ill not cause an& "aGo $e,o"ance issue
lie lo Paging 'uccess ate. %n&a&+ the u$lication cells # hae !een elete.
he cell ith %C9999 is test!e cell onl&.
hen a the %C the"atic "a$ in "a$ in,o tools. he %C !ouna& $lanning is $lan
a$$eciate hee no islan %C site in -NC.
2016060! "UA#$I Confidential Page% &otal1'
8/15/2019 Analysis Report on Low Paging Success Rate Due to CN Configuration [1]
9/14
Analysis Report on Low Paging Success Rate due to CNconfiguration
Internal Use only
iv. Paging &osses due to PC" C#annel Congestion at $$ interface.
igue 6 Cell PCH Channel usage ate an --C.Paging1oss ue to PCH Congestion
u Paging Congestion Cell atio is 0 an PCH !anith usage ate is aoun 0.
i) u Paging Congestion Cell atio6 he PCH Channel is not congeste !ase on the
$e,o"ance statistic checing. he counte that "easue is
;'.--C.Paging1.oss.PCHCong.Cell. n ail&+ ;'.--C.Paging1.oss.PCHCong.Cell is less
than 200 hich conti!ute Paging Congestion atio onl& 0.0030 o !elo.
(easurement point for %!.RRC.Paging1.&oss.PC"Cong.Cell
he "easue"ent is tiggee hen the -NC iscas a $aging "essage ue to PCH
congestion. his counte inicates the nu"!e o, Paging essages #iscae #ue to PCH
Congestion ,o Cell.
ii) PCH !anith usage ate6 *eall PCH sage is uite high hee the eco""ene
theshol is onl& 0.
o esole the PCH !anith usage ate+ %C e$lanning an aing "oe 'CCPCH
channel can !e the solution.
2016060! "UA#$I Confidential Page% &otal1'
8/15/2019 Analysis Report on Low Paging Success Rate Due to CN Configuration [1]
10/14
Analysis Report on Low Paging Success Rate due to CNconfiguration
Internal Use only
o this case+ ei,& hethe the nu"!e o, atte"$t ae easona!le ae not ae the neDt ste$s
to ei,& !e,oe an& eD$ansion o e$lan actiit& taen $lace.
v. Paging Counter and 0P) Audit
RNC: )$ Paging !uccess Ratio
?(;'.-%N%P.Paging.'ucc.le@/;'.-%N%P.Paging.%tt.le@)I100
Core Networ: Paging !uccess Rate
? (Nu"!e o, ist Paging -es$onses ,o" u nte,aceNu"!e o, -e$eate Paging
-es$onses ,o" u nte,ace)/Nu"!e o, ist Pagings to u nte,ace)I100
2016060! "UA#$I Confidential Page10% &otal1'
8/15/2019 Analysis Report on Low Paging Success Rate Due to CN Configuration [1]
11/14
Analysis Report on Low Paging Success Rate due to CNconfiguration
Internal Use only
o this case+ ei,& hethe the nu"!e o, atte"$t ae easona!le ae not ae the neDt ste$s
to ei,& !e,oe an& eD$ansion o e$lan actiit& taen $lace.
%s ste$s to ei,& hethe the nu"!e o, $aging atte"$t ae easona!le o not+ co"$ae the
nu"!e o, $aging atte"$t !eteen -NC an 'C. t is ,oun out that the $aging that eceie
,o" -NC ae 5 ti"es highe than 'C.
%s conseuence+ sus$ect that "is"atching on -NC atte"$t "ight co"ing ,o" ong
counte in -NC o CN.
o ei,& it+ stat u Paging tacing in -NC e! ,o 10 hou ,o" 7$"+ 11 a& until a"+
12 a&. o" the co"$aison esult+ the $aging eceie ,o" coe neto ae "atching ith
the -NC counte s.-%N%P.CsPaging.%tt. hus+ -NC counte "easue"ent ae accuate.
2016060! "UA#$I Confidential Page11% &otal1'
8/15/2019 Analysis Report on Low Paging Success Rate Due to CN Configuration [1]
12/14
Analysis Report on Low Paging Success Rate due to CNconfiguration
Internal Use only
in oe to co"$ae the nu"!e o, $aging atte"$t ,o" -NC an Coe neto+
vi. )nconsistent &AC !etting for certain cells in Core networ
o" ,uthe anal&sis on the u $aging tacing+ it is ,oun out that %C isti!ution in
-NC994 ae as ta!le !elo6
%C 270: an 270C ae not the %C in -NC99+ it is !elongs to -NC994. =h& 'C also
sen the -NC99 $aging to -NC 994K
@scalate to CN coe neto enginee to ca& out cell an %C consistenc& chec !eteen
'C an -NC.
t is ,oun out that ong %C in,o"ation hae !een e,ine ,o cetain a"ounts o, cell ue
to so"e cells ae Noe: eho"e ,o" -NC994 to -NC99 !ut the CN con,iguation ae not
u$ate to ne -NC a,te the Noe: eho"e actiit&.
:& eo the u Paging acing+ no "oe $aging "essage eceie !& -NC994 on %C 270:
an 270C. t inicates that Cell an %C con,iguation consistenc& chec an coection ae
one success,ull&.
2016060! "UA#$I Confidential Page12% &otal1'
8/15/2019 Analysis Report on Low Paging Success Rate Due to CN Configuration [1]
13/14
Analysis Report on Low Paging Success Rate due to CNconfiguration
Internal Use only
%,te coect those inconsistenc& cell in 'C+ the $aging success ate i"$oe ,o" aoun
50 to 70. :ut 70 ,o Paging 'uccess ate still consie unacce$ta!le. =h& the $aging
success ate still loK
t is sus$ect the -%C con,iguation in 'A'N "ight !e inaccuate as ell. @scalate it to P'
coe tea" ,o the Cell # an -%C consistenc& checing.
he esult o, the consistenc& checing sho that the -%C9+ -%C4+ -%C1 an -NC95 ae
unnecessa& an eDta -%C that con,igue to -NC 994.
2016060! "UA#$I Confidential Page1)% &otal1'
8/15/2019 Analysis Report on Low Paging Success Rate Due to CN Configuration [1]
14/14
Analysis Report on Low Paging Success Rate due to CNconfiguration
Internal Use only
P' Coe tea"s elete the inaccuate -%C in 'A'N. he $aging success ate ,uthe
i"$oes ,o" 70 to 90 hich is une acce$ta!le ange no.
. !uggestion and !ummary
n this case+ inaccuate -NC# ,o cetain Cell in 'C an aitional -%C in 'A'N cause
the o Paging 'uccess -ate.
Cooination ith C' coe tea"+ P' coe tea" an HL ae essential to sole the neto
issue e,,icienc&.
2016060! "UA#$I Confidential Page1'% &otal1'