【正文】 ）1 RRC建 立CELL_DCH2 DCCH:初 始直接傳輸Initial UE MessageCM SERVICE REQDirect TransferSETUP鑒權(quán)，身份識(shí)別，加密4 DCCH:上 行鏈路直接傳送5 RAB建 立6 PagingPCCH： Paging Type17 RRC建 立8 DCCH:初 始直接傳輸Initial UE MessagePAGING RESPONSE鑒權(quán)，身份識(shí)別，加密11 DCCH:上 行鏈路直接傳送10 Direct TransferSETUPDirect TransferCALL CONFIRM12 RAB建 立ALERTINGDCCH:下 行鏈路直接傳送ALERTINGDirect Transfer14 DCCH:上 行鏈路直接傳送Direct TransferCONNECTDCCH:下 行鏈路直接傳送CONNECTDirect TransferDirect TransferCONNECT ACKDCCH:下 行鏈路直接傳送Direct TransferCONNECT ACK15 DCCH:上 行鏈路直接傳送核心網(wǎng)被叫方應(yīng)答RRC連 接MM連 接CM連 接RRC連 接MM連 接CM連 接DCCH:下 行鏈路直接傳送13 DCCH:上 行鏈路直接傳送Direct TransferCM SERVICE REQSecuirity Mode ControlSETUPPAGING RESPONSECALL CONFIRMSecuirity Mode CompleteSecuirity Mode ControlSecuirity Mode CompleteSecuirity Mode CompleteSecuirity Mode CompleteSecuirity Mode ControlSecuirity Mode Control 54 2022/3/13 PS域呼叫建立流程 (1) Direct TransferDCCH: Uplink Direct TransferMM連 接CM連 接Secuirity Mode CompleteSecuirity Mode CompleteUE（ 主叫） UTRAN 核心網(wǎng)Secuirity Mode CommandSecuirity Mode Command1 RRC建 立RRC連 接鑒權(quán)，身份識(shí)別DCCH:Intial UE messageIntial Direct TransferACTIVATE PDP CONTEXT REQUEST ACTIVATE PDP CONTEXT REQUEST5 RAB建 立Direct TransferDCCH: Downlink Direct TransferACTIVATE PDP CONTEXT ACCEPT ACTIVATE PDP CONTEXT ACCEPTSERVICE REQUESTSERVICE REQUESTPMM_IDLE 55 2022/3/13 PS域呼叫建立流程 (2) Direct TransferDCCH: Uplink Direct TransferMM連接CM連接Secuirity Mode CompleteSecuirity Mode CompleteUE（主叫） UTRAN 核心網(wǎng)Secuirity Mode CommandSecuirity Mode Command1 RRC建立RRC連接鑒權(quán)，身份識(shí)別DCCH:Intial UE messageIntial Direct TransferACTIVATE PDP CONTEXT REQUEST ACTIVATE PDP CONTEXT REQUEST5 RAB建立Direct TransferDCCH: Downlink Direct TransferACTIVATE PDP CONTEXT ACCEPT ACTIVATE PDP CONTEXT ACCEPTATTACH REQUESTATTACH REQUESTPMM_NULLDirect TransferDCCH: Downlink Direct TransferATTACH ACCEPT ATTACH ACCEPTDirect TransferDCCH: Uplink Direct TransferATTACH COMPLETE ATTACH COMPLETE 56 2022/3/13 CS域注冊(cè) Secuirity Mode CompleteSecuirity Mode CompleteUE（ 主叫） UTRAN MSCSecuirity Mode CommandSecuirity Mode CommandRRC建 立DCCH:Intial UE messageIntial Direct TransferRRC釋 放LOCATION UPDATE REQUESTLOCATION UPDATE REQEUSTDirect TransferDCCH: Downlink Direct TransferLOCATION UPDATE ACCEPTDirect TransferDCCH: Uplink Direct TransferLOCATION UPDATE COMPLETELOCATION UPDATE COMPLETELOCATION UPDATE ACCEPT 57 2022/3/13 PS域注冊(cè) Secuirity Mode CompleteSecuirity Mode CompleteUE UTRAN SGSNSecuirity Mode CommandSecuirity Mode CommandRRC建 立DCCH:Intial UE messageIntial Direct TransferRRC釋 放ATTACH REQUESTATTACH REQUESTDirect TransferDCCH: Downlink Direct TransferATTACH ACCEPT ATTACH ACCEPTDirect TransferDCCH: Uplink Direct TransferATTACH COMPLETE ATTACH COMPLETE 58 2022/3/13 呼叫釋放簡(jiǎn)介 釋放場(chǎng)景： ? UE發(fā)起正常釋放 (本方掛機(jī)，或 PDP去激活 ) ? CN發(fā)起正常釋放 (對(duì)方掛機(jī) ) ? 上行無(wú)線鏈路丟失 (Node B觸發(fā) )引起釋放 ? 下行無(wú)線鏈路丟失 (UE觸發(fā) ) 引起釋放 ? RNC故障引起釋放 釋放過(guò)程： ? CM connection release ? Iu and RRC connection release 1. Iu release 2. Uu release 3. Iub release 59 2022/3/13 CS域呼叫釋放流程 UE Node B RNC CN UENode BRNCUplink dir ect tranferDISCONNECTDirect t ranferRELEASEDirect t ranferDISCONNECTRELEASEDownlink dir ect tranferUplink dir ect tranferDirect t ranferRELEASE COMP LETERELEASE COMP LETEDISCONNECTDirect t ranferDownlink dir ect tranferDISCONNECTRELEASEUplink dir ect tranferRELEASEDirect t ranferDirect t ranferRELEASE COMP LETEDownlink dir ect tranferRELEASE COMP LETECM 釋放Iu Re lea se Comma ndIu Re lea se Comma ndIu Re lea e Co mple teIu Re lea e Co mple teRRC ReleaseRRC Release CompleteRRC ReleaseRRC Release Complete釋放 AAL2 鏈路釋放 AAL2 鏈路RL Deletion RequestRL Deletion Respons eRL Deletion RequestRL Deletion Respons e釋放 AAL2 鏈路釋放 AAL2 鏈路Iu連接釋放U口RRC連接釋放Iub口RL釋放 60 2022/3/13 PS域呼叫釋放流程 UE Node B RNC CNUplink direct tranferDirect tranferDirect tranferDeactive PDP Cxt RequestDownlink direct tranferCM 釋放Iu Re lea se Comma ndIu Re lea se Comma ndIu Re lea e Co mple teRRC ReleaseRRC Release Complete釋放 AAL2 鏈路RL Deletion RequestRL Deletion Respons e釋放 AAL2 鏈路Deactive PDP Cxt RequestDeactive PDP Cxt AcceptDeactive PDP Cxt AcceptRAB Assignment RequestRL Reconfiguration PrepareRL Reconfiguration ReadyRL Reconfiguration Commit釋放 AAL2 鏈路RAB Assignment Respons eRB ReleaseRB Release CompleteIu， Uu，Iub釋 放 61 2022/3/13 參考資料 ? （ 1） （只關(guān)注重點(diǎn)場(chǎng)景流程） ? （ 2） 《 端到端呼叫流程 》 文檔（只關(guān)注重點(diǎn)場(chǎng)景流程） ? （ 3） 《 K1297碼流分析 》 文檔＋對(duì)應(yīng)的碼流（只關(guān)注重點(diǎn)場(chǎng)景流程） 62 2022/3/13 Qamp。