gsm協(xié)議棧原理ppt課件-免費(fèi)閱讀
【正文】 SIM ? Transmitting and receiving SMS ? Cell Broadcast management ? Interfaces ? SMSAL_L4C_SAP – L4C ? SMSAL_SOC_SAP – SOC ? MNSMS_SAP – SMS ? SMSAL_AS_SAP RMPC ? Source ? mcu/ps/l4/smsal L4 – TCM/SMSAL in WAP/GPRS (6/9) ? TCM will relay IP packets to SNDCP, and vice versa. ? SMSAL forwards PUSH message to Socket T C MWAPTCP /IP/ UDPSOCL4CSNDCPABMLLCSMS MS A LSMSL4 – CSM (7/9) ? Call Service Management ? Bearer Capability Handling ? CODEC attachment management ? CSD/Fax activation/deactivation ? Call information maintaining ? Call related SS handling ? Interfaces ? CSM_L4C_SAP – L4C ? MNCC_SAP – CC ? CSM_TDT_SAP – TDT of Data ? CSM_L2R_SAP – L2R of Data ? MNSS_SAP CISS ? Source ? mcu/ps/l4/csm L4 – SMU (8/9) ? Security Management Unit ? Security Checking ? Phone lock ? CHV1/CHV2 ? Personalization (ETSI ) ? Autolock ? Interfaces ? SMU_L4C_SAP – L4C ? PS_SIM_SAP SIM ? Source ? mcu/ps/l4/smu L4 PHB amp。 //…… while (1) { receive_msg_ext_q(task_ext_qid, amp。current_ilm)。current_ilm)。current_ilm)。 A 。current_ilm)。 /*process external ILM */ while (receive_msg_int_q(task_entry_ptrtask_indx, amp。current_ilm)。 /*process external ILM */ mm_main(amp。 PHB MO Call 2 MO call 3 TCH Assigned MO call 4 Attach User Speech GPRS Attach ? Condition ? MS is idle in a cell that supports GPRS ? MS is requested for GPRS Attach by AT mand ? Players ? L4C, RAC, MM, LLC, RR GPRS Attach – 1 Read SI13/PSI1 GPRS Attach 2 PDP Context Activation ? Condition ? GPRS Attached ? PDP Context activation is triggered by dialup from PC ? Players ? L4C, TCM, PPP, SM ? LLC, MM, RR PDP Context Activation – 1 Atd*99 (UART) LCP/PAP/IPCP PDP Context Activation – 2 (UART) IPCP ACK PDP Context Activation – 3 Read PPP frame from UART Write PPP frame from UART Uplink TBF Operation ? Condition ? Idle state, GPRS service is available ? One uplink LLPDU ? Onephase access ? Players ? RLC, MAC, RMC, MPAL, REASM ? LLC, L1 UL TBF – 1 UL TBF – 2 UL TBF – 3 ? Condition – Idle state. GPRS service is available. – One downlink LLPDU ? Players – RLC, MAC, RMC, MPAL, REASM, – LLC, L1 Downlink TBF Operation DL TBF – 1 DL TBF – 2 Q amp。 } Multimodule Singlemodule FMIATCIL 4CCSM SMS ALRAC TCMMM/GMMSMSCCSSL2RRLPTDTD a taSMSND CPL4LLCRRRRMMPA LL1NVRAMD riversPPPUARTSIMRMPCL AP D MRL CMACSMUPHBUEM
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