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GSM呼叫流程大全(动画“加”详细参数ppt.ppt

GSM呼叫流程大全(动画“加”详细参数ppt.ppt

ID：50466643

大小：857.00 KB

页数：98页

时间：2020-03-14

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1、channelrequestMSBTSBSCMSCVLRchannelrequestMSBTSBSCMSCVLRestablishmentcause answerforpaging(MTC) emergencycall callre-establishment userrequest(MOC,SMS,suppl.service) otherserives(loc.update,IMSIdetach)randomnumberchannelrequestMSBTSBSCMSCVLRchannelrequiredchanne

2、lrequestMSBTSBSCMSCVLRchannelrequiredBSCstartssearchingforaSDCCHchannel -channelavailable->reservation -nochannelavailable->blockingchannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCHseizatt.SDCCHbusyatt.GhostCCCHRes.BSCstartssearchingforaSDCCHchannel -channelavail

3、able->reservation -nochannelavailable->blockingchannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCHseizatt.SDCCHbusyatt.GhostCCCHRes.channelactivationchannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCHseizatt.SDCCHbusyatt.GhostCCCHRes.channelactivationchannelact.ackn.c

4、hannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCHseizatt.SDCCHbusyatt.GhostCCCHRes.channelactivationchannelact.ackn.immediateassignmentchannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCHseizatt.SDCCHbusyatt.GhostCCCHRes.channelactivationchannelact.ackn.immediateassig

5、nmentinformationincluded pagemode timingadvance channeldescription timeslot subchannel trainingsequencecode RFchannelnumbertimer3101startedintheBSCchannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCHseizatt.SDCCHbusyatt.GhostCCCHRes.channelactivationchannelact.ackn.

6、immediateassignmentSDCCHassign.informationincluded pagemode timingadvance channeldescription timeslot subchannel trainingsequencecode RFchannelnumbertimer3101startedintheBSCchannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCHseizatt.SDCCHbusyatt.GhostCCCHRes.channel

7、activationchannelact.ackn.immediateassignmentSDCCHassign.immediateassignmentchannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCHseizatt.SDCCHbusyatt.GhostCCCHRes.channelactivationchannelact.ackn.immediateassignmentSDCCHassign.immediateassignmentESTABLISHMENTPARTchan

8、nelrequestMSBTSBSCMSCVLRchannelrequiredSDCCHseizatt.SDCCHbusyatt.GhostCCCHRes.channelactivationchannelact.ackn.immediateassignmentSDCCHassign.immediateassignmentCMser

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