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1、 天津移动通信有限责任公司 1 分析 RAU 对 PDP 激活成功率的影响 RAU-路由区更新的过 程在 SGSN 中经常发生，在 Gb 接口传送的 RAU 包只有几十个字节，虽然 RAU 的次数比 较频繁，在一般情况下不会对系统的正常工作产生影响，但 RAU 也会发生一些非正常的行为会对系统造成负面影 响，首先我们举例分析一下非正常 RAU 的行 为过程： 15:01:53.447142 Verb2 (CF:MS_SI): Session Activation Request received from MS: TLLI: C00024CA IMSI: 460 00 2108016198 T
2、I: (0) 0 15:01:53.447844 Verb1 (CF:OP_SEQ): OI not specified in APN(R) 15:01:53.453201 Verb2 (CF:GSN_SI): Create PDP Context Request sent to GGSN: IMSI: 460 00 2108016198 NSAPI: 5 Network Address: IPv4 211.137.162.35 15:01:53.458406 Verb2 (CF:GSN_SI): Create PDP Context Response received from GGSN (
3、successful): IMSI: 460 00 2108016198 NSAPI: 5 Network Address: IPv4 211.137.162.35 15:01:53.458735 Info (CF:OP_SEQ): CreatePDPContextResponse from GGSN flowLabelSignalling set (value=55585) flowLabelDataI set (value=55586) 15:01:53.459076 Verb2 (CF:MS_SI): Session Activation Accept sent to MS: TLLI:
4、 undefined IMSI: 460 00 2108016198 TI: (1) 0 /-Activation PDP-TLLI=C00024CA-IMSI=460 00 2108016198- - 15:02:53.385960 Verb2 (CF:MS_SI): Session Deactivation Request received from MS: TLLI: C00024CA IMSI: 460 00 2108016198 TI: (0) 0 15:02:53.391786 Verb2 (CF:MS_SI): Session Deactivation Accept sent t
5、o MS: TLLI: undefined IMSI: 460 00 2108016198 TI: (1) 0 /-Deactivation PDP-TLLI=C00024CA- IMSI=460 00 2108016198- - 15:34:15.338511 Verb2 (CF:MS_SI): Routing Area Update Request received from MS: TLLI: C00024CA IMSI: 460 00 2108016198 15:34:15.343531 Verb2 (CF:MS_SI): Routing Area Update Accept sent
6、 to MS: TLLI: C00024CA IMSI: 460 00 2108016198 天津移动通信有限责任公司 2 /-RAU(cell reselection)-TLLI=C00024CA- IMSI=460 00 2108016198- - IMSI 为 460002108016198 的手机行为正常，建立 过 PDP 连接并且在使用后正常释放，还正确进行了路由区更新过 程 15:56:24.167203 Verb2 (CF:MS_SI): Routing Area Update Request received from MS: TLLI: 800024CA IMSI: unde
7、fined 15:56:24.167754 Verb2 (CF:GSN_SI): SGSN Context Request sent to SGSN: TLLI: C00024CA Network Address: IPv4 211.137.162.16 15:56:24.175853 Verb2 (CF:GSN_SI): SGSN Context Response received from SGSN: IMSI: 460 00 2165018966 cause=128 15:56:24.176213 Verb2 (CF:GSN_SI): SGSN Context Acknowledge s
8、ent to SGSN: Network Address: IPv4 211.137.162.4 128 15:56:24.176688 Verb2 (CF:MS_SI): Routing Area Update Accept sent to MS: TLLI: 80001677 IMSI: 460 00 2165018966 15:56:28.664305 Verb2 (CF:MS_SI): Routing Area Update Complete received from MS: TLLI: C000230A IMSI: 460 00 2080108366 /-RAU(incoming
9、inter RA)-TLLI=800024CA -Local TLLI= C0001677-IMSI=460 00 2080108366- - IMSI 为 460002080108366 的手机向 SGSN 发起了 inter SGSN RAU 过 程，过程中使用了与 IMSI 为 460002108016198 的手机相同的 TLLI 16:01:41.49500 Verb2 (CF:MS_SI): Session Activation Request received from MS: TLLI: C00024CA IMSI: 460 00 2108016198 TI: (0) 0 16
10、:01:41.50242 Verb1 (CF:OP_SEQ): OI not specified in APN(R) 16:01:41.55858 Verb2 (CF:GSN_SI): Create PDP Context Request sent to GGSN: IMSI: 460 00 2108016198 NSAPI: 5 Network Address: IPv4 211.137.162.34 16:01:41.61341 Verb2 (CF:GSN_SI): Create PDP Context Response received from GGSN (successful): I
11、MSI: 460 00 2108016198 NSAPI: 5 Network Address: IPv4 211.137.162.34 16:01:41.61645 Info (CF:OP_SEQ): CreatePDPContextResponse from GGSN flowLabelSignalling set (value=26657) flowLabelDataI set (value=26658) 16:01:41.61985 Verb2 (CF:MS_SI): Session Activation Accept sent to MS:TLLI: undefined IMSI:
12、460 00 2108016198 TI: (1) 0 16:01:41.66032 Verb2 (CF:OP_SEQ): (A0526) Procedure Conflict Detected. IMSI: 460 00 2108016198 ActiveProcedureName:PDPActivationSequence(port=358)(signature=1) IncomingProcedureName:Unknown Sequence 天津移动通信有限责任公司 3 16:01:41.66259 Verb2 (CF:OP_SEQ): (A0527) Procedure Confli
13、ct Resolved. IMSI: 460 00 2108016198 ActiveProcedureName:PDPActivationSequence(port=358)(signature=1) IncomingProcedureName:Unknown SequenceActionTaken:bothLive /-Activation PDP-NSPAI=5-TI=0-TLLI=C00024CA-IMSI=460 00 2108016198-(TLLI=C00024CA-IMSI=undefined)- IMSI 为 460002108016198 的手机建立 PDP 连接的过程中检测到了冲突发生，使得 PDP 建立成功的消息没有发送到 手机 16:03:37.387875 Verb2 (CF:MS_SI): Session Activation Request received from MS: TLLI: C00024CA IMSI: 460 00 2108016198 TI: (0) 1 16:03:37.388613 Verb1 (CF:OP_S
