RR ASSINGMENT COMMAND是不是G网TCH建立的指令?
RR开头的都是G网
--呼叫流程:BTS与MS间信令消息
i.首先(指配SDCCH信道):(被叫才有paging request->)channel request(通过RACH)->immediate assignment(->paging response被叫才有)->CM service request;
ii.然后(鉴权加密):authentication request(DL)->authentication response(UL)->cipher mode command(DL)->cipher mode complete(UL)
iii.接着(呼叫建立):MS主叫MOC,MS被叫MTC,其中的assignment指配的是TCH;数据业务指配的是PDCH;
主叫setup(UL)->call processing(DL)->assignment command(DL)->assignment complete(UL)->alert(DL)->connect->connect acknowledge
被叫setup(DL)->call confirmed(UL)->assignment command(DL)->assignment complete(UL)->alert(UL)->connect->connect acknowledge
iv.通话结束:
对信令信道的释放:disconnect->release->release complete->
对无线承载的释放:call control(clear command)->normal event(channel release)(->release indication->clear complete由BSC给MSC)
是!!!!!!!
是无线资源层SDCCH信道立即指配的命令。