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GSM呼叫流程动画.ppt

GSM呼叫流程动画.ppt

ID：50466644

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)randomnumberchannelrequestMSBTSBSCMSCVLRchannelrequiredchannelrequestMSBTSBSCMSCVLRchannel

2、requiredBSCstartssearchingforaSDCCHchannel -channelavailable->reservation -nochannelavailable->blockingchannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCHseizatt.SDCCHbusyatt.GhostCCCHRes.BSCstartssearchingforaSDCCHchannel -channelavailable->reservation -nochannelavailable->blockingchannelrequ

3、estMSBTSBSCMSCVLRchannelrequiredSDCCHseizatt.SDCCHbusyatt.GhostCCCHRes.channelactivationchannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCHseizatt.SDCCHbusyatt.GhostCCCHRes.channelactivationchannelact.ackn.channelrequestMSBTSBSCMSCVLRchannelrequiredSDCCHseizatt.SDCCHbusyatt.GhostCCCHRes.channe

4、lactivationchannelact.ackn.immediateassignmentchannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCHseizatt.SDCCHbusyatt.GhostCCCHRes.channelactivationchannelact.ackn.immediateassignmentinformationincluded pagemode timingadvance channeldescription timeslot subchannel trainingsequencecode RFchanne

5、lnumbertimer3101startedintheBSCchannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCHseizatt.SDCCHbusyatt.GhostCCCHRes.channelactivationchannelact.ackn.immediateassignmentSDCCHassign.informationincluded pagemode timingadvance channeldescription timeslot subchannel trainingsequencecode RFchannelnu

6、mbertimer3101startedintheBSCchannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCHseizatt.SDCCHbusyatt.GhostCCCHRes.channelactivationchannelact.ackn.immediateassignmentSDCCHassign.immediateassignmentchannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCHseizatt.SDCCHbusyatt.GhostCCCHRes.channelactivatio

7、nchannelact.ackn.immediateassignmentSDCCHassign.immediateassignmentESTABLISHMENTPARTchannelrequestMSBTSBSCMSCVLRchannelrequiredSDCCHseizatt.SDCCHbusyatt.GhostCCCHRes.channelactivationchannelact.ackn.immediateassignmentSDCCHassign.immediateassignmentCMser

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