DXU隐性故障导致上行PCU掉包数高.doc

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1、故障案例DXU隐性故障导致上行PCU掉包数高省公司专业无线设备类型宏蜂窝设备厂家爱立信设备型号RBS2202软件版本编制时间2009-3-1作者作者电话入库时间审核人审核人电话厂商审核人联系方式关键字DXU、丢包、传输、RP、PCU故障现象从2月尾开始，DGM19B1出现上行丢包数高的现象。告警信息无。原因分析一般造成PCU丢包数高的原因主要会有几个方面：1、RP故障2、传输故障、3、基站硬件故障。DGM19B1网元在2月份开始出现严重的上行PCU丢包数高的现象，如下图：首先,用OPS脚本追出网元内小区的丢包数情况。从追踪结果来看

2、高丢包数的小区不是集中在某一块RP，所以可以排除RP板故障。通过追踪得出小区麻四（G46MSI1）：CELLIND号：MAC_06D的上行丢包数很多。于是尝试对其上行丢包数进行清0，隔几分钟观察一下它的增长情况。正常情况下，应该增长很慢或不增长，异常情况下则增长很快。用RLGRP和RLDEP得出他的RP和MAC_***代码。过程如下：

3、RDSHELP'FORRP/EMRPSYSTEMDEBUGGERHELPUSEESCAPECHARACTER'<'OR'/'(SEQUENCE)TOGETLOWERCASELETTERSConsole-monitorconnectionreadyOSmon>Connectingtothemaintargetatose_ldm/...OSmon>:DISPLAYPROCELLMP_MAC_***Error:UnrecognizedcommandOSmon>:DISPLAYPROCESSMP_MAC_***ProcessNameIde

4、ntityTypePriState--------------------------------MP_MAC_08F393659prio21receiveMP_MAC_03E4718913prio21receiveMP_MAC_0282818488prio21receiveMP_MAC_0183801466prio21receiveMP_MAC_01D983472prio21receiveMP_MAC_06D2752860prio21receiveMP_MAC_0021900909prio21receive***DisplayP

5、ROCESSend***OSmon>:APTGETCELLSTATMP_MAC_06DRunninggetcellstat...Cellactivationtime:2009-02-2012:03:52Statisticssince:2009-02-2012:03:52'mac'RoundTripDelay=3'mac'RoundTripDelayinFN=13'mac'RTTGuardtime=12'mac'MaxRoundTripDelayinFN=108'mac'NumberofActiveLPDCHs=16'mac'Num

6、berofActiveLPSETs=3'mac'NumberofActiveUplinkTBFs=6'mac'NumberofActiveDownlinkTBFs=10'mac'DiscardedPagingMessagesperthousand=0'mac'Numberofscheduledpollingrequestedbycon=818202'mac'Numberofunsuccessfulpollingrequestedbycon=147453'mac'Numberofscheduledpollingrequestedby

7、rlc=12339066'mac'Numberofunsuccessfulpollingrequestedbyrlc=632348'mac'NumberofsuccessfulFNrequestsfromcon=335776'mac'NumberofunsuccessfulFNrequestsfromcon=0'mac'NumberofreceivedGSLerrorsignalsonactivePDCH=5774251'mac'NumberofreceivedGSLerrorsignalsonnotactivePDCH=1577

8、47'mac'NumberofuplinkmessageswithCorEbiterror=561840'mac'NumberofCRCerroronAir=3480091'mac'NumberofCRCerroronGSL=395086'mac'