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NodeB Alarm:i. Cell unavailable ii. Transmission Alarmiii. DSP or CPU alarm,iv. Clock alarm or RF alarm;
change to MOD LOCELL: RADIUS=29000, HORAD=0;
NodeB LMT DSP CLKSTAT or LST CLKRECORD
if TOP Cell CS HO Prep SR<99%
a)For ATM:E1Test:if AAL2PATH Down or BER>1%,Check transmission qualityb)For IP:PingTest: if PacketLoss>1%Check transmission quality
if clock status (FREE),escalate to RAN/BSS 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 interference
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。
[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 monitor
Alarm Check SOP,
change to close (0)
change to close (0)
check if 2G TCH/SD block rate >1%
ii. Check if 3G to 2G CIO is 0
IF IRATHO.FailRelocPrepOutCS.UKnowRNC
i. check if RNC and 2GBSC :PLMN,LAC、BSIC are matched
ii. Check if RNC,3G MSC and 2G BSC: PLMN、LAC are matced
iii. If 2G/3G don't have same MSC,check if 2G side CN configure 3G LAC
IF IRATHO.FailRelocPrepOutCS.ReloNoSup or IRATHO.FailRelocPrepOutCS.TgtFail
i. check 2G BSC and CN if enable 3G HO in(Inter-RAT In BSC Handover Enable)
ii. Check if CNs direction enable
check if miss 2G Neighbor(better coverage)
check if cell-cell neighbor; VS.IRATHO.FailOutCS.UEF.N
i. check if RNC side 2G cell info is matched with BSC side
iii. Check 2GBTS alarm(Clock)
Iur interface configuration check
check if cell-cell neighbor; VS.IRATHO.FailOutCS.UEF.N
iv. Check 3GNodeB Clock status, if CS HO relocation <50%, but prepare OK, mostly due to this reason
v. check if 2G cell have interference,if interference impact performance (RMV GSMNCELL)vi. ADD CELLINTERRATHOCOV: TargetRatCsThd=16, Try to improve the TargetRatCsThd.
check if cell-cell neighbor; VS.IRATHO.FailOutCS.UEF.N
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)
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
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
a) 如果是超远覆盖,需要跟客户澄清
b) 如果确认接入失败小区下有直放站
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) 修改TOP10小区信令FACH最大发射功率(提升2dB,MOD SCCPCH:CellID=*****, FACH1Id=4, FACH1MaxPower=30;)
Output
d)Expansion, PIC BSS
Analysis Action(Level 3) Analysis Action(Level 4)
VS.RRC.Rej.ULIUBBandCong
VS.RRC.Rej.DLIUBBandCong
a)check NCP/CCP if congestion, expansion
b)check if configure match with phsical BW;optimize active factor
c)change user GBR
VS.RRC.Rej.UL.CE.Cong
VS.RRC.Rej.DL.CE.Cong
a) if NodeB dynamic CE enable, try decrease GBR(SET USERGBR : UlGBR=D32, DlGBR=D32)
b) else expand CE
VS.RRC.Rej.Power.Cong, a)Check if CELLALGOSWITCH: NBMCacAlgoSwitch=HSDPA_UU_ADCTRL-0&HSUPA_UU_ADCTRL-b)1) if ul congestion :MOD CELLCAC: UlTotalEqUserNum=140 or more2) if dl congestion :MOD CELLALGOSWITCH: NBMDlCacAlgoSelSwitch=ALGORITHM_THIRD)3) then, expansion
VS.RRC.Rej.Code.Cong, if NodeB Dynamic Code,MOD CELLHSDPA set mannual,1 code.Else if RNC Dynamic Code,Mod CELLHSDPA auto,Max 15,Min 1
else expansion
RNC Alarm
TOP Cell Alarm Check RNC Alarm
Check IuB packet loss a)ATM,Check BERb)IP: Check Packet Loss Rate
TOP Cell Alarm Check RNC Alarm
TOP Cell Alarm CheckNodeB Alarm:
[Option]Check IuB packet loss a)ATM,Check BERb)IP: Check Packet Loss Rate
Else Escalate
NodeB Alarm:Check IUB AAL2PATH or IPPATH configruation
NodeB 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