cssr&cdr guideline
DESCRIPTION
Cssr&Cdr GuidelineTRANSCRIPT
RRC Setup
Counter Sub Counter
VS.RRC.Rej.Power.Cong
VS.RRC.Rej.UL.CE.Cong
VS.RRC.Rej.DL.CE.Cong
VS.RRC.Rej.Code.Cong
VS.RRC.Rej.ULIUBBandCong
VS.RRC.Rej.DLIUBBandCong
VS.RRC.Rej.RL.Fail
RRC.FailConnEstab.Cong
VS.RRC.Rej.AAL2.Fail
RRC.FailConnEstab.NoRepl
y
CS RAB SetupCounter Level1 Sub Counter Level2 Sub CounterLevel3
PS RAB SetupCounter Level1 Sub Counter Level2 Sub Counter Level3
VS.RAB.FailEstPs.Power.Cong
VS.RAB.FailEstPs.Code.Cong
VS.RAB.FailEstab.PS.DLIUBBand.Cong
VS.RAB.FailEstab.PS.ULIUBBand.Cong
VS.RAB.FailEstPs.ULCE.Cong
VS.RAB.FailEstPs.DLCE.Cong
VS.RAB.FailEstabPS.Unsp.Other
CS Call DropCounter Level1 Sub Counter Level2
VS.RAB.Loss.CS.RF.RLCRst
VS.RAB.Loss.CS.RF.ULSync
RRC.FailConnEstab.Cong
VS.RRC.FailConnEstab
VS.RAB.FailEstabCS.RNL VS.RAB.FailEstCS.Unsp VS.RAB.FailEstabCS.Cong
VS.RAB.FailEstabCS.Unsp.Other
VS.RAB.FailEstCS.RIPFail
VS.RAB.FailEstCS.Relo
VS.RAB.FailEstabCS.RNL.Other
VS.RAB.FailEstabCS.TNL
VS.RAB.FailEstabCS.other.CELL
VS.RAB.FailEstPS.RNL VS.RAB.FailEstPS.Unsp
VS.RAB.FailEstPS.RIPFail
VS.RAB.FailEstPS.Par
VS.RAB.FailEstPS.Relo
VS.RAB.FlEstPS.RNL.Other
VS.RAB.FailEstPS.TNL
VS.RAB.FailEstPS.NResAvail
VS.RAB.FailEstabPS.Other.Cell
VS.RAB.Loss.CS.RF
VS.RAB.Loss.CS.RF.UuNoReply
VS.RAB.Loss.CS.RF.Oth
VS.RAB.RelReqCS.OM kalau hardware problem, VS.RAB.Loss.CS.Abnorm increaseVS.RAB.RelReqCS.UTRANgen
VS.RAB.RelReqCS.RABPreempt
VS.RAB.Loss.CS.Aal2Loss
VS.RAB.Loss.CS.Congstion.CEL
L
VS.Call.Drop.CS.Other
PS Call DropCounter Level1 Sub Counter Level2 Sub Counter Level3
VS.RAB.Loss.PS.SRBReset
VS.RAB.Loss.PS.TRBReset
CS IRAT Handover FailCounter Level1 Sub Counter Level2
VS.SRELOC.Fail.IRATCSOutN
Rpl
VS.SRELOC.Fail.IRATCSOutCa
nc
VS.SRELOC.Fail.IRATCSOutTe
xp
VS.SRELOC.Fail.IRATCSOutTf
ai
VS.SRELOC.Fail.IRATCSOutT
Ove
VS.IRATHO.PrepFailCSOut.Uk
wnRNC
VS.IRATHO.PrepFailCSOut.No
Rsrc
VS.IRATHO.PrepFaiCSInTgtOv
eL
VS.IRATHO.PrepFailCSOutReqi
nfnotavai
VS.IRATHO.FailCSOut.CfgUnR
NC
VS.IRATHO.FailCSOut.PhyFaR
NC
PS IRAT Handover FailCounter Level1 Sub Counter Level2
VS.IRATHO.PSOut.CfgUnsup
VS.IRATHO.PSOut.PhyCHFail
VS.RAB.Loss.CS.RF
VS.RAB.Loss.CS.Abnorm
VS.RAB.Loss.PS.Abnorm VS.RAB.RelReqPS.OM
VS.RAB.RelReqPS.RABPreempt
VS.RAB.Loss.PS.GTPULoss
VS.RAB.Loss.PS.Congstion.CELL
VS.IRATHO.PSOut.FailPS
VS.SRELOC.FailPrep.IRAT
CSOut
VS.IRATHO.FailCSOut.RN
C
VS.Call.Drop.PS.Other
VS.RAB.Loss.PS.RF VS.RAB.Loss.PS.RF.RLCRst
VS.RAB.Loss.PS.RF.ULSync
VS.RAB.Loss.PS.RF.UuNoReply
VS.RAB.Loss.PS.RF.Oth
VS.IRATHO.PSOut.Unpec
VS.IRATHO.PSOut.NoReply
VS.IRATHO.PSOut.FailPS
Sub CounterLevel4
VS.RAB.FailEstCs.Power.Cong
VS.RAB.FailEstCs.Code.Cong
VS.RAB.FailEstab.CS.DLIUBBand.Cong
VS.RAB.FailEstab.CS.ULIUBBand.Cong
VS.RAB.FailEstCs.ULCE.Cong
VS.RAB.FailEstCs.DLCE.Cong
VS.RAB.FailEstabCS.Unsp.Other
VS.RAB.FailEstCS.RIPFail
VS.RAB.FailEstCS.Relo
VS.RAB.FailEstabCS.RNL.Other
VS.RAB.FailEstabCS.TNL
VS.RAB.FailEstabCS.other.CELL
kalau hardware problem, VS.RAB.Loss.CS.Abnorm increase
Analysis ActionAnalysis Sub ActionInput Tools
Subsystem exception
Cluster MeasuResult M2000/PRS/Nastar
TOP N Cell ID,RNC MMLMeasuResult PRS
Counter Analysis
M2000/PRS/Nastar
M2000/LMT
LMT
LMT
RNC MM,check Iu-CS,Iub,Iur interface configuration
Cell
Abnormal
Cluster MeasuResult,CFGMML
TOP N CellID
TOP Cell
Cell PRS
Counter Analysis
LMT
PRS,RNC/NodeB
LMT、M2000
Cell
TOP Cell
TOP Cell PRS
Counter Analysis
PRS,RNC/NodeB
LMT、M2000
PRS,RNC LMT
MeasuResult
TOP Cell
Top Cell M2000,UMAT
TOP Terminal Analyis
CHR PCHR Analyzer
Counter Analysis
CHR
PRS,RNC LMT
PCHR Analyzer
PCHR Analyzer
NASTARV6R8
PCHR Analysis
TOP User Analysis
CHR
CM Analysis
MeasuResult
MR
TOP Cell
CHR
PCHR Analyzer,M2000,LMT
PCHR Analyzer
PCHR Analysis
CM Analysis
CHR
Special HO Fail
Analysis
Analysis Action(Level 1) Analysis Action(Level 2)
VS.Call.Drop.CS.Otherif VS.RAB.Loss.CS.RF.Oth>10% Escalate to TSif subsystem CDR > 3%,and denominator >10000 ; (VS.RAB.Rel.Abnorm.AMR.SPU/(VS.RAB.Rel.Abnorm.AMR.SPU+VS.RAB.Rel.Norm.AMR.SPU)))
Escalate to TS
RNC Alarm
NodeB Alarm:i. Cell unavailable ii. Transmission Alarmiii. DSP or CPU alarm,iv. Clock alarm or RF alarm;
Check TOP cell neighbor handover radius
change to MOD LOCELL: RADIUS=29000, HORAD=0;
Check if RC.AttConnEstab.EmgCall/( RRC.AttConnEstab.OrgConvCall + RRC.AttConnEstab.TmConvCall + RRC.AttConnEstab.EmgCall)>50%
check coverage scene
DSP AAL2PATH/IPPATH check path if available
check if AAL2RT or IPRT is configureda)For ATM:E1Test:if AAL2PATH Down or BER>1%,Check transmission qualityb)For IP:PingTest: if PacketLoss>1%Check transmission qualityNodeB LMT DSP CLKSTAT or LST CLKRECORD
[Option]TOP cell transmission configuration
VS.RAB.RelReqCS.OM
VS.RAB.RelReqCS.UTRANgen VS.RAB.RelReqCS.RABPreempt VS.RAB.Loss.CS.Aal2Loss VS.RAB.Loss.CS.Congstion.CELL
IF ClusterVS.RAB.Loss.CS.Abnorm>10%
[Option]TOP cell clock check
TOP Cell Alarm Check
if clock status (FREE),escalate to RAN/BSS
TOP cell interference if RTWP (>-96dBm),check according to Interference guidelinei check traffic if highii check if have RF module alarmiii trace RTWP in LMT,compare primary and secondary RTWP to check if interneliiii using LMT frequency scan Functionto check if external interferenceCheck HO_MC_MEAS_BEYOND_UE_CAP_SWITCH (CORRMALOGSWITCH)Check HO_MC_SIGNAL_SWITCH (CORRMALOGSWITCH)if TOP Cell CS HO Prep SR<99%
TOP cell 3G/2G HO Check
if CS HO relocation <98%,and IRATHO.FailOutCS.PhyChFail >50%
[Option]TOP cell clock check
Check if enable 2G->3G HO,should close SET RRCTRLSWITCH: RSVDPARA1= RsvdBit1_BIT17=0;
ClusterVS.RAB.Loss.CS.Abnorm>20%
Escalate to TS
Check if configure Iur between RNCs,propose configure IurCheck if miss inter RNC cell neighbor
TOP cell 3G/2G HO Check
check CS HO inter RNC
Top cell at border of RNCs
if CS HO relocation <98%,and IRATHO.FailOutCS.PhyChFail >50%
if CS HO relocation <98%, and if IRATHO.FailOutCS.CfgUnsupp >20%
IOS Aanalyis
[option] check if Top N IMSI drop have same signalling procedure
Escalated to TS
filter if Top 5 IMEI CallDrop >10%(Total Call Drop)
Escalated to TS
说明掉话跟压模有关,需要优化连续覆盖区域小区的压模参数,降低小区异频/异系统起
压模门限,减少起压模次数
Escalated to TSfilter if Top 10 IMSI CallDrop >10%(Total Call Drop)
按文档统计与压模相关的掉话占总的语音掉话的比例,如果超过30%
check CS HO inter RNC
Top cell at border of RNCs
check CS Relocation inter RNC
In Nastar “Topic Fuction”->”UMTS Coverage data task”caculate TOP cell EcNo,RSCP,Tp chart;
MR Coverage Analysis
a) 通过M2000查看这两个小区所在NodeB是否有异常告警(例如时钟、通道、DSP和射频告警),如果有需要先处理异常告警。b) (可选)对两个小区所在站点进行时钟核查。c) (可选)利用RNC维护台小区性能监测中的节点同步功能(如下图)检查这两个小区的Iub时延,如果时延相差超过SET DPUCFGDATA中 FPMDCCOMBINEDELAYVALUE设置值(基线为20ms),修改上行FP合并时延等于两小区Iub时延差+20ms。
d) 如果这两个小区没有异常告警,Iub时延也正常,可以尝试修改源小区相对目标小区的CIO(ADD/MOD INTRAFREQNCELL: CIOOffset=10),如果修改后有效,说明切换失败是信号突变引起的;反之,需要把CIO改回0。
说明掉话跟压模有关,需要优化连续覆盖区域小区的压模参数,降低小区异频/异系统起
压模门限,减少起压模次数
统计原因为no_active_set_cmp的掉话话单中出现频度最高的TOP10小区,查看TOP10小区中是否有小区90%的软切换失败都是向特定小区切换失败的,如果是,进入下一级动作
按文档统计与压模相关的掉话占总的语音掉话的比例,如果超过30%
Analysis Action(Level 3) Analysis Action(Level 4)Output ActionCheck SOP Alarm infoCheck Iu Transmission.[Option]Chenk if CS_IUUP_V2_SUPPORT_SWITCH(CORRMALOGSWITCH) matach with CN side TFO/TrFO[Option]Check if security mode is matched between CN and RNC CS&PS.(RNC,SET UEA)Check if CFG_DL_BLIND_DETECTION_SWITCH (CORRMALOGSWITCH) open, and close to monitorEscalate to TS
Alarm Check SOP, Alarm handle result
check if the CDR related to alarm time
Alarm handle result
change to close (0)
change to close (0)
i. check if RNC and 2GBSC :PLMN,LAC、BSIC are matchedii. Check if RNC,3G MSC and 2G BSC: PLMN、LAC are matcediii. If 2G/3G don't have same MSC,check if 2G side CN configure 3G LACi. check 2G BSC and CN if enable 3G HO in(Inter-RAT In BSC Handover Enable)ii. Check if CNs direction enable
check if 2G TCH/SD block rate >1%check if miss 2G Neighbor(better coverage)
i. check if RNC side 2G cell info is matched with BSC sideii. Check if 3G to 2G CIO is 0iii. Check 2GBTS alarm(Clock)
check if cell-cell neighbor; VS.IRATHO.FailOutCS.UEF.N
IF IRATHO.FailRelocPrepOutCS.UKnowRNC
IF IRATHO.FailRelocPrepOutCS.ReloNoSup or IRATHO.FailRelocPrepOutCS.TgtFail
iv. Check 3GNodeB Clock status, if CS HO relocation <50%, but prepare OK, mostly due to this reasonv. check if 2G cell have interference,if interference impact performance (RMV GSMNCELL)vi. ADD CELLINTERRATHOCOV: TargetRatCsThd=16, Try to improve the TargetRatCsThd.a) check if 3G RNC,2G BSC cell security mode is matched.(if 2G no security,SET RRCTRLSWITCH: PROCESSSWITCH=SYS_HO_OUT_CIPHER_SWITCH-1&SYS_HO_CIPHER_CONFIG-0)[Option]Check 2G cellFrequencyList if correct
Iur interface configuration check
a) SET CORRMALGOSWITCH: CmpSwitch=CMP_IUR_SHO_DIVCTRL_SWITCH-1 if NRNC is NSNb) if VS.SHO.FailRLSetupIur.TransCongRx or VS.SHO.FailRLRecfgIur.CongTx >20%, check Iur configuration
Check ifVS.SHO.SuccRLSetupIur.Rx/VS.SHO.AttRLSetupIur.Tx<99.5%VS.SHO.SuccRLAddIur.Rx/VS.SHO.AttRLAddIur.Tx<99.5%
check if cell-cell neighbor; VS.IRATHO.FailOutCS.UEF.N
check if cell-cell neighbor; VS.IRATHO.FailOutCS.UEF.N
c) if VS.SHO.FailRLSetupIur.HW.Rx or VS.SHO.FailRLSetupIur.CfgURx >20% ,escalated to TS
if VS.SRELOC.SuccExec.UENonInvCS.RNC/VS.SRELOC.AttExec.UENonInvCS.RNC <60%, then SET SRNSR: SrnsRabCnDomainType=NRT
a) Porpose configure Iurb) if can't configure Iur ,Escalate to TS
if TOP Cell,MR count(EcNo<-14dB or RSCP<-110dBm)>20%,need RF optimizationif TOP Cell (RSCP>-85dBm and EcNo<-14dB)>20%,perhapes pilot pollution,need RF optimization
a) 对异频异系统共存的小区,检查SET HOCOMM: CoexistMeasThdChoice参数配置,在异频、异系统共存时哪个2D/2F参数有效并修改之(例如共存时异系统的2D/2F有效,则修改小区异系统2D/2F参数)
PCHR过滤后的数据,语音掉话TOP10 IMSI信息
压模掉话占总掉话的比例,参数优化建议
Check ifVS.SHO.SuccRLSetupIur.Rx/VS.SHO.AttRLSetupIur.Tx<99.5%VS.SHO.SuccRLAddIur.Rx/VS.SHO.AttRLAddIur.Tx<99.5%
(RELOC.SuccPrepUEInvolCS/RELOC.AttPrepUEInvolCS)*(VS.SRELOC.SuccExec.UEInvCS.RNC/VS.SRELOC.AttExec.UEInvCS.RNC)<80%
b) 对只有异频邻区或异系统邻区的小区,修改这些小区的异频或异系统压模参数
压模掉话占总掉话的比例,参数优化建议
Analysis ActionAnalysis Sub ActionInput Tools
Subsystem abnormal
MeasResult PRS,OMStar
MeasResult,CFGMML PRS,OMStar
Top cell
MeasResult PRS,OMStar单机版
MeasResult PRS,OMStar单机版
MeasResult PRS,OMStar,NodeB LMT
MeasResult、RNC MML PRS
Top cell
统计失败的TMSI分布(暂不
执行)
从过滤出的数据中统计失败的Tp分布
PCHR Analysis
PCHRAnalyzer
从过滤出的数据中统计EcNo
CHR
PCHR Analysis
PCHRAnalyzer
从过滤出的数据中统计EcNo
CHR
Analysis Action(Level 1)Analysis Action(Level 2)If Subsystem RRC SR <97%,denominator> 10000,then Subsystem abnormal
Escalated to TS
if VS.RRC.Rej.RL.Fail>10%
Top cell capacity check
TOP5 CellRL Fail
TOP5 Cell TNL Fail Checkif VS.RRC.Rej.TNL.Fail占RRC>10%
if VS.RRC.FailConnEstab.Cong >10%
a) Check missing neighbor
以上措施都未解决问题 提单
TOP5 Cell TNL Fail Checkif VS.RRC.Rej.TNL.Fail占RRC>10%
b)Get VS.RRC.FailConnEstab.NoReply TOP5 Cell
if VS.RRC.FailConnEstab.NoReply>10%
a) 如果是超远覆盖,需要跟客户澄清
a) 修改非RNC边界小区的同频重选启动门限IdleSintrasearch为127(MOD CELLSELRESEL: CellId=*****, IdleSintrasearch=127)
b) 如果有TMSI一段时间内在某几个小区连续每隔1分钟或更短时间左右就RRC失败一次
b) 如果确认接入失败小区下有直放站
a) 首先与客户确认TMSI是否本网络的用户还是漫游用户,如果失败的TMSI非本网用户,也非MOCN和有效的漫游用户,统计所有这类TMSI的比例,跟客户交流澄清
如果有TMSI的接入失败较多(例如占总失败0.05%以上)
如果有20%以上的接入失败是Tp>20,这些小区或者是超远覆盖(在郊区),或者存在直放站。
统计失败时接入小区信令EcIo<-14dB(也即消息里的上报值小于21)的比例,如果超过30%,说明弱覆盖是接入失败主因
b) 修改TOP10小区信令FACH最大发射功率(提升2dB,MOD SCCPCH:CellID=*****, FACH1Id=4, FACH1MaxPower=30;)
统计失败时接入小区信令EcIo<-14dB(也即消息里的上报值小于21)的比例,如果超过30%,说明弱覆盖是接入失败主因
Analysis Action(Level 3)Analysis Action(Level 4)Output Action
a)check NCP/CCP if congestion, expansion
b)check if configure match with phsical BW;optimize active factorc)change user GBRd)Expansion, PIC BSSa) if NodeB dynamic CE enable, try decrease GBR(SET USERGBR : UlGBR=D32, DlGBR=D32)b) else expand CEa)Check if CELLALGOSWITCH: NBMCacAlgoSwitch=HSDPA_UU_ADCTRL-b)1) if ul congestion :MOD CELLCAC: UlTotalEqUserNum=140 or more2) if dl congestion :MOD CELLALGOSWITCH: NBMDlCacAlgoSelSwitch=ALGORITHM_THIRD)3) then, expansion
if NodeB Dynamic Code,MOD CELLHSDPA set mannual,1 code.Else if RNC Dynamic Code,Mod CELLHSDPA auto,Max 15,Min 1else expansionRNC AlarmNodeB Alarm:a)ATM,Check BERb)IP: Check Packet Loss
Else EscalateRNC Alarm
TOP Cell Alarm Check
VS.RRC.Rej.Power.Cong,
VS.RRC.Rej.Code.Cong,
VS.RRC.Rej.ULIUBBandCong
VS.RRC.Rej.DLIUBBandCong
TOP Cell Alarm Check
VS.RRC.Rej.UL.CE.Cong
VS.RRC.Rej.DL.CE.Cong
[Option]Check IuB packet loss
NodeB Alarm:Check IUB AAL2PATH or IPPATH configruation
a)ATM,Check BERb)IP: Check Packet Loss Rate
TOP Cell Alarm Check RNC AlarmNodeB Alarm:i. Cell unavailable ii. Transmission Alarmiii. DSP or CPU alarm,iv. Clock alarm or RF alarm;
SPU/PIU Load Check if Subsystem VS.SPU.CPULOAD.MEAN >60%check if (RRC.AttConnEstab.IRATCelRes/ VS.RRC.AttConnEstab.Cell) or (IRATHO.AttIncCS/VS.RAB.AttEstabCS.Conv) too high,optimize Reselection or HOelse: Expansion
FACH channel congestion: FACHch utl = (VS.MAC.CRNCIubBytesFACH.Tx-VS.MAC.CRNCIubBytes.PS.CCH.TX)*8/((60*<SP>*168*1/0.01)* VS.PCH.Bandwidth.UsageRate + (60*<SP>*168*2/0.01)*(1- VS.PCH.Bandwidth.UsageRate))
if FACHch utl >70% a)if (RRC.AttConnEstab.IRATCelRes/ VS.RRC.AttConnEstab.Cel)>20%,check 2G site downb) add SCCPCH
Interference check
其它参数的核查和优化 按文档排查
TOP Cell Alarm Check
Check IuB packet loss
i. 查询接入原因是否10,也即INTER_RAT_CELL_RESELECT,如果是,可能是频繁的2G/3G重选导致的,需要优化3G侧重选启动门限SsearchRat,减少乒乓ii. 查询接入失败的小区是否是RNC边界的小区,如果是可以修改该小区同频重选门限
iii. 失败原因是否有资源拥塞,如果资源资源拥塞,可以参照TOP小区资源拥塞核查子动作进行相关检查
关闭直放站后在观察一下小区RRC接入指标,如果有改善,说明接入失败与直放站确有关系,需要关闭直放站
如果直放站关闭前后,小区RRC接入指标变化较小,说明RRC接入失败与直放站没有关系
Analysis ActionAnalysis Sub ActionInput Tools
[Option] Security mode check
CS_IUUP_V2_SUPPORT_SWITCH check
(可选)拆线消息悬置功能检查PS+PS Combine License check
Subsystem abnormal
MeasResult PRS,OMStar
PRS,OMStar
话统分析
Top Cell Analysis
MeasResult
PRS,OMStar
话统分析
Top Cell Analysis
MeasResult
话统分析
Top Cell Analysis
PRS,OMStarMeasResult
MeasResult PRS,OMStar,NodeB LMT
Top cell M2000/LMT
TOP终端分析
OMStar,M2000
话统分析
Top Cell Analysis
TOP用户分析
最近一周2~3天工作日CHR
PCHRAnalyzer
PCHR分析
MeasResult
PRS,OMStarMeasResult
Analysis Action(Level 1)Analysis Action(Level 2)Check CS VS PS, CN VS RNC Security mode:(MSC SET MapConfig,SGSN SET PMM ,RNC SET UEA) if matchedcheck CS_IUUP_V2_SUPPORT_SWITCH(SET CORRMALGOSWITCH)
if open ,support Iuup ver2,Check CN side if open TFO/TrFO fuction,should be matched with RNC
向CN侧工程师了解MSC是否打开拆线消息悬置功能
如果打开,要求CN工程师关闭该功能
check PS+PS License
If Subsystem RRC SR <97%,denominator> 10000,then Subsystem abnormal
Escalated
if VS.RAB.FailEstabCS.Unsp>10%
Top5 cell capacity check
if VS.RAB.FailEstabCS.Unsp>10%
Top5 cell capacity check
if VS.RAB.FailEstabCS.IubFail>10%,(RAN12)
执行TOP5小区Iub Fail核查
if VS.RAB.FailEstabCS.IubFail>10%,(RAN12)
执行TOP5小区Iub Fail核查
Check Top Cell TNL FailIfVS.RAB.FailEstabCS.TNL
a) Check Missing Neighbor
b) (R12 Support ) VS.RAB.FailEstabCS.RBIncCfg or VS.RAB.FailEstabCS.RBCfgUnsup>5%
TOP IOS Analysis 参见文档进行
如果某类型号终端接入失败占总接入失败的10%以上
提单
如果有TOP10的IMSI的接入失败较多(例如占总失败10%以上)
提单
(可选)检查TOP10 IMSI的接入流程是否一致,如果一致,在提单中说明
If VS.RAB.FailEstCS.RIPFail(R12: VS.RAB.FailEstabCS.UuFail)>10%
b) VS.RAB.FailEstCS.RIPFail TOP5 Cell
Check Top Cell TNL FailIfVS.RAB.FailEstabCS.TNL
Analysis Action(Level 3)Analysis Action(Level 4)Output Action
i.LST ADJNODE,check adj Node Numii.LST AAL2PATH,check if local and peer between 2 side.ii. If path configure correct,add new aal2path
i. if PATH bandwidth<1.5M,change to acturalii. Else, add new path
if (IRATHO.AttIncCS/ VS.RAB.AttEstabCS.Conv)>10%
Disable 2G->3G handover
a)check NCP/CCP if congestion, expansionb)check if configure match with phsical BW;optimize active factorc)change user GBRd)Expansion, PIC BSS
if (VS.RAB.FailEstabCS.Unsp –VS.RAB.FailEstabCS.Cong)>5%, Check AAL2 CID
Congestion : if ANIQAAL2.Est.RLC.NoCID.T
x or VS.QAAL2.Est.RLC.NoCID.R
x>10
if VS.RAB.FailEstab.PS.DLIUBBand.Cong VS.RAB.FailEstab.PS.ULIUBBand.Cong
a) if NodeB dynamic CE enable, try decrease GBR(SET USERGBR : UlGBR=D32, DlGBR=D32)b) else expand CEa)Check if CELLALGOSWITCH: NBMCacAlgoSwitch=HSDPA_UU_ADCTRL-0&HSUPA_UU_ADCTRL-0&HSDPA_GBP_MEAS-0)b)1) if ul congestion :MOD CELLCAC: UlTotalEqUserNum=140 or more2) if dl congestion :MOD CELLALGOSWITCH: NBMDlCacAlgoSelSwitch=ALGORITHM_THIRD)c)Else,expansiona)SET MACHSPARA: DYNCODESW=OPEN;ADD CELLHSDPA: AllocCodeMode=Manual, b)ExpansionRNC侧告警:参考日常核查SOP,如有异常,进行处理
TOP小区告警核查(特别是传输告警)
VS.RAB.FailEstPs.Code.Cong
VS.RAB.FailEstPs.ULCE.Cong VS.RAB.FailEstPs.DLCE.CongVS.RAB.FailEstPs.Power.Cong
NodeB侧告警(i. 小区不可用告警(例如FP失败导致的小区不可用),ii. 传输告警(例如闪断,丢包),iii. DSP或CPU告警,iv. 射频告警;):对比话统和告警(以小时为粒度),查看告警出现后是否RRC接入失败次数有上升,告警消失后(如果消失的话),RRC接入失败次数也下降,如果是,说明RRC接入失败跟异常告警可能有关联,要处理告警信息a) 对ATM传输,检测E1的误码率(参看文档)b) 对IP传输,检测IP网络的丢包率(参看文档)
如果传输没有问题 提单Check Iu interface Alarm
Check Iu-CS AAL2PATH or IPPATH configurationCheck Iu-CS if have packet Loss
RNC AlarmNodeB Alarm:i. Cell unavailable ii. Transmission Alarmiii. DSP or CPU alarm,alarm;
Check Iub AAL2PATH or IPPATH configuration
i.ATM,Check BER
(可选)检查Iub是否存在丢包
TOP小区告警核查(特别是传输告警)
Check IuB if have packet Loss
Top cell Alarm Check ,transmission alarm
ii.IP: Check Packet Loss Rate
Excalated
RNC AlarmNodeB Alarm:i. Cell unavailable ii. Transmission Alarmiii. DSP or CPU alarm,iv. Clock alarm or RF alarm;
Interference Check RTWP>-90dBm
TOP cell Alarm Check
Check IuB if have packet Loss