主叫呼叫建立流程

发布于:2021-10-14 01:16:30

Um 接口第三层主叫建立流程示例 CCCH ——— DL:paging request type1 Paging mode :normal paging Channels needed for mobiles Mobile 1:any channel Mobile 2:any channel Mobile identity Type of identity:any channel BCCH —— DL:system information type 3 BCCH —— DL:system information type 4 CCCH —— DL:paging request type 1 BCCH —— DL:system information type 1 BCCH —— DL:system information type 2 CCCH —— DL:paging request type 1 AGCH —— DL:immediate assignment Paging mode:normal paging Channel description Channel type:sdcch/8 + sacch/c8 or cbch(sdcch/8) Subchannel number:7 Timeslot number [TN] Training sequence code [TSC] Hopping channel :RF channel Maio HSN CCCH —— DL:paging request type 1 SDCCH —— UL:CM service request RACH —— UL:channel request CCCH —— DL:paging request type 1 BCCH —— DL:system information type 4 CCCH —— DL:paging request type 1 AGCH —— DL:immediate assignment SACCH —— DL:system information type 5 SDCCH —— DL:CM service accept SDCCH —— UL:set up Transaction identifier [TI] Bearer capability 1 Radio channel requirement Dual rate / full rate SACCH —— DL:system information type 6 SACCH —— UL:measurement report SACCH —— DL:system information type 5 SACCH —— UL:measurement report SDCCH —— DL:Call proceeding SACCH —— DL:system information type 5ter

SACCH SACCH SACCH SDCCH

UL:measurement report DL:system information type 6 UL:measurement report DL:Assignment command Channel description Channel type :TCH/F + ACCHs TN 、TSC、maio、HSN FACCH —— UL:assignment complete SACCH —— DL:system information type 5 SACCH —— UL:measurement report FACCH —— DL:Alerting TI Progress indicator Location:public network serving the remote user Coding standard Progress description SACCH —— DL:system information type 6 SDCCH —— DL:connect (建立话音) FACCH —— UL:connect acknowledge SACCH —— UL:measurement report SACCH —— DL:system information type 5 SACCH —— UL:measurement report SACCH —— DL:system information type 5ter SACCH —— UL:measurement report SACCH —— DL:system information type 6 FACCH —— DL:Disconnect FACCH —— UL:Release FACCH —— DL:Release complete FACCH —— DL:Channel Release

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