gsm協(xié)議棧原理ppt課件-在線瀏覽
2025-06-22 12:35本頁(yè)面
【正文】 ction ? Cell power level report ? Interface ? L4C_RAC_SAP – L4C ? GMMREG_SAP – MM ? MMIAS_SAP RMPC ? Source ? mcu/ps/l4/rac L4 – TCM (4/9) ? Terminal Context Management ? Handle PDP context profiles ? QoS, PDP address, PDP types… ? Request to activate PDP contexts ? Relay of Data transfer ? Interfaces ? TCM_L4C_SAP – L4C ? SMREG_SAP – SM ? SNDCP_REG_SAP SNDCP ? TCM_PPP_SAP – PPP ? TCM_TCPIP_SAP TCPIP ? Source ? mcu\ps\l4\tcm L4 – SMSAL (5/9) ? SMS Application Layer ? Message box of ME amp。current_ilm)。current_ilm)。current_ilm)。 break。current_ilm)。 /*process external ILM */ while (receive_msg_int_q(task_entry_ptrtask_indx, amp。 process_ilm(amp。GSM/GPRS Protocol Stack Architecture Vito Tai Outline ? GSM/GPRS Protocol Stack Architecture ? Introduce the architecture and all modules of Protocol stack ? Common Procedures ? Includes general procedures, like LU, MO call, GPRS ATTACH, and etc., for illustration of the functionality and interaction of modules of Protocol stack. Outline ? GSM/GPRS Protocol Stack Architecture ? Introduction ? L4 ? NAS ? AS ? Data ? SIM ? Common Procedures Introduction: Task . Module ? One Module implements one layer or groups of functionalities. ? Task is the unit of OS scheduling ? The munication between Modules is by Primitives(Messages) ? More overhead in intertask munication ? Put modules into one task ? Share mon memory ? Lousy munications ? Share the same priority ? Other consideration ? General priority arrangement: lower layer higher priority Task1 KAL Module1 Task2 Module3 Module2 SAP MCD TST SAP Introduction: Task main while (1) { receive_msg_ext_q (task_ext_qid, amp。current_ilm)。current_ilm)。current_ilm)) { process_ilm(amp。 /*process internal ILM */ } } void process_ilm (ilm_struct *current_ilm) { switch (current_ilmdest_mod_id) { case MOD_CSM: csm_main( current_ilm )。 //…… while (1) { receive_msg_ext_q(task_ext_qid, amp。 /*process external ILM */ mm_main(amp。 free_ilm(amp。 } Multimodule Singlemodule FMIATCIL 4CCSM SMS ALRAC TCMMM/GMMSMSCCSSL2RRLPTDTD a taSMSND CPL4LLCRRRRMMPA LL1NVRAMD riversPPPUARTSIMRMPCL AP D MRL CMACSMUPHBUEML 4ARMIKA L O S a d a p t a t ionREASMSAP headers: define message ids Driver interface ASN file of CC Header file of CC So
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