Power congestion issue in HuaweiHuawei-WCDMA WCDMA Network
I agree with the previous post, how can we achieve AMR rate reduction?? Is it automatic or something manual?? Switch in the RNC side or NodeB side?? Yet another way is to decrease ! SIR target value, so that RNC would assign Yet lower power "or #$s in !% &owever the "irst thing is to determine, what is consuming ! power ' AMR, R(( )S RAB or RRC% I have seen site that had power congestion due to high h igh load o" registration RRC% It was on in correct !AC%
I have &uawei *+ networ, there is high )S RAB congestion and "rom &uawei )S congestion counters i have checed -elow things. lu- congestion /0S%RAB%1ail$sta-)S%lu--and%Cong2 /0S%RAB%1ail$sta-)S%lu--and%Cong2 C$ congestion /0 S%RAB%1ail$sta-)S%C$%Cong2 S%RAB%1ail$sta-)S%C$%Cong2 Code Congestion / 0S%RAB%1ail$sta-)S%Code%Cong2 0S%RAB%1ail$sta-)S%Code%Cong2 )ower congestion /0S%RAB%1ail$sta-)S%)ower%Cong2 3ut o" the total )S RAB congestion 456 is )ower congestion -ut rest 756 is not "rom any o" the a-ove reasons% Can you share what can -e the other causes, !ie &S)A Congestion or some thing else? khurrambilal01 8598'5('54, 58.5: )M &i "riends, Anyone pl; comment?
, 5:.8( AM No-ody can answer ./ Fado 8598'5('5>, 58.55 )M hi chec -elow counters too, ' 0S%RAB%1ail$st)s%Code%Cong. 0S%RAB%1ail$st)s%Code%Cong. )S RAB esta-lishment "ailures due to code congestion ' 0S%RAB%1ail$st)s%)ower%Cong. )S RAB esta-lishment "ailures due to power congestion ' 0S%RAB%1ail$st)s%#!C$%Cong. 0S%RAB%1ail$st)s%#!C$%Cong. )S RAB esta-lishment esta-lishment "ailures due to #! C$ congestion ' 0S%RAB%1ail$st)s%!C$%Cong. 0S%RAB%1ail$st)s%!C$%Cong. )S RAB esta-lishment "ailures due to ! C$ congestion ' 0S%RAB%1ail$sta-%)S%!I#BBand%Cong. 0S%RAB%1ail$sta-%)S%!I#BBand%Cong. )S RAB esta-lishment "ailures due to #! Iu- -andwidth congestion ' 0S%RAB%1ail$sta-%)S%#!I#BBand%Cong. 0S%RAB%1ail$sta-%)S%#!I#BBand%Cong. )S RAB esta-lishment "ailures due to ! Iu- -andwidth congestion ' 0S%RAB%1ail$sta-)S%#nsp%3ther. 0S%RAB%1ail$sta-)S%#nsp%3ther. )S RAB esta-lishment "ailures "ailures due to congestion in other resources than the previous 4 cases ' 0S%RAB%1ail$sta-)S%RN!%3ther. 0S%RAB%1ail$sta-)S%RN!%3ther. )S RAB esta-lishment "ailures due to any RN! related reason other than the previous 95 cases !ac o" system resources lie memory, memory, high C)# load, etc% ' 0S%RAB%1ail$st)S%NResAva 0S%RAB%1ail$st)S%NResAvail. il. )S RAB esta-lishment "ailures due to shortage on system resources Any other reason. "ollowing counter indicate "ailure due to any other reason apart "rom the previous ones ' 0S%RAB%1ail$sta-)S%3ther%Cell. )S RAB esta-lishment "ailures due to any other reason e@cept the previous 9* cases miri 8598'5('5>, 5.9* )M &i, try to see how many times and how long the cell is in 3verload state. 0S%!CC%3!C%#!%Num ' Num-er o" #! 3verload Congestions "or Cell 0S%!CC%3!C%!%Num 0S%!CC%3!C%!%Num ' N um-er o" ! 3verload Congestions "or Cell
0S%!CC%3!C%#!%, 5(.:> )M e are using RAN 98%5 &i, try to see how many times and how long the cell is in 3verload state. 0S%!CC%3!C%#!%Num ' Num-er o" #! 3verload Congestions "or Cell 0S%!CC%3!C%!%Num ' Num-er o" ! 3verload Congestions "or Cell 0S%!CC%3!C%#!%'88, 5*.9 AM o you use 8 carriers "or 9 cell? I" yes, chec the Service )riority "or RNC and cell% &i, e have two carriers "or one cell, &ow to chec Service priority "or RNC cell? tharinduwije 859*'5>'88, 5:.:7 )M +o to RNC MM! in help ta- type S)+ /Service )riority +roup2%You can use R -ased load -alancing with either serviced -ased or !oad -ased Switch%e currently have two carriers con"igured with Service )riority%Best way to reduce )ower congestion is Reduce
&i everyone, I" you want to reduce pw congestion should veri"y the dedicate channel on RNC in "act, how many power does it have the )CC& /dB2% I changed to 7dB and it was succes"ull% the pw congestion decreased% Be care"ull and dont "orget add reputation .2 S$< #1RC. )ilot)oE7F
)ilot)o )ilot power o""set Meaning.
lpchS"8:4)ilotBit ! )C& pilot -its o" S18:4 Meaning. % 1or details o" this parameter, re"er to the *+))
pilots% By doing this, the downlin cell capacity increases% hen this parameter is set to 8, the num-er o" downlin )CC& pilot -its decreases% In this case, #$s o-tain less accurate SIRs and the transmit power o" )CC& pilots is low%
HI,
Power congestion in WCDMA network is very serious problem. Sometimes we observe power congestion in our network for D or ! or for bot".
In Common pr#ctice if someone f#ce power congestion t"ey recommen$ to #$$ power c#p#bility or #$$ new c#rriers or #$$ new site to resolve power congestion.
%ut suppose power c#p#bility is #lre#$y re#c"e$ to m#& #llowe$ v#lue, we #re not #ble to #$$ new c#rrier #s ' c#rriers #lre#$y implemente$ on cells o
In suc" circumst#nces we c#n $o some p#r#meter optimi(#tion to re$uce power congestion #t worst cells. Here I w#nt to s"#re few suc" tec"ni)ues to re$uce power congestion.
Solution for D Power congestion *
+. Implement D D
-n#ble D D switc"*
MD !C-A/SWI0CH* CellI$12, 3%M$cAlgoSwitc"1 D4!!4D5+6
Mo$ify !C-D p#r#meters*
MD !C-D* CellI$12, Dl$r7irstAction1Co$eA$8, Dl$rSecon$Action1%-#tee$, Dl$r0"ir$Action1Inter7re)DH, Dl$r7ourt"Action1CSInter#tS"oul$%eDH, Dl$r%-#tee$uction#b3um19, /ol$!sero#$ControlSwitc"136 :if customer #grees for "#n$over of CS service to '/ in c#se of congestion in 9/ ot"erwise remove fourt" #ction6 if we "#ve single c#rrier Inter7re)DH #ction s"oul$ be remove$ from propos#l;
'. Mo$ify !C-DM P#r#meters*
MD !C-DM* CellI$12, Dl$r0rig0"$1<=, Dl$rel0"$1>=6
9. Mo$ify !C-CAC P#r#meters*
MD !C-CAC*C-ID12,DC3?AM0HD1@>,DC3?33AM0HD1 @>,D0H-0HD1@9,DH0HD1@,DC-00A0HD1B96
Solution for ! Power congestion *
+. Implement ! D
-n#ble Switc" for ! D5
MD !C-A/SWI0CH* CellI$12, 3%M$cAlgoSwitc"1 !4!!4D5+6
Mo$ify D p#r#meters5
MD !C-D*C-ID12,!D7IS0AC0I31%-#tee$,!D S-C3DAC0I31Inter7re)DH,!D%-A0--D!C0I3A% 3!M196 :0"is is wit"out IA0 for e&#mple if customer $ont w#nt IA0 even if congestion in 9/6 if we "#ve single c#rrier Inter7re)DH #ction s"oul$ be remove$ from propos#l;.
'. Mo$ify !C-DM P#r#meters*
MD !C-DM*C-ID12,!D0I/0HD1>>,!D-0HD1>6
9. Mo$ify !C-CAC P#r#meter *
MD !C-CAC*C-ID12,!00A-E!S-3!M1+<=6
