《gsm協(xié)議棧原理》ppt課件-全文預覽
【正文】 cations ? , ? SAPs ? SIM_PS_SAP to all modules ? Function interface with SIM driver ? Source ? mcu/ps/sim AS (RR) ? Access Stratum RR ? Radio Resource ? Most modules are in RR task ? 3GPP/ETSI Specifications ? , , , , RRRRM (1/10) ? Radio Resource Management Init ? Power on PLMN Selection ? Cell selection ? Manual PLMN Selection ? Home PLMN Search ? Recovery to normal service ? SAPs ? RRM_RMPC_SAP – RMPC ? MM_AS_SAP – MM ? Source ? mcu/ps/rr/rrm RRRMPC (2/10) ? Radio Resource Management on CCCH or PCCCH ? Decision rule: SI13 will indicate if P channel is supported in the cell ? Idle Mode ? Monitor (packet) system information on BCCH or PBCCH ? Perform cell reselection ? Perform (packet) channel access on CCCH or PCCCH ? Response to (packet) paging messages on CCCH or PCCCH RRRMPC (3/10) ? Dedicated mode ? Measurements on SDCCH/TCH ? Monitoring neighboring cells ? Monitor System Information on SACCH ? Perform cell reselection (NW initiated) ? Dedicated mode procedures ? SAPs ? MMI_AS_SAP – MMI ? SMSAL_AS_SAP – SMSAL ? MM_AS_SAP – MM ? RRM_RMPC_SAP – RRM ? RMC_LAPDM_SAP – RMC RRRMPC (4/10) ? RLC_RMPC_SAP – RLC ? MAC_RMPC_SAP – MAC ? RMPC_MPAL_SAP MPAL ? Source ? mcu/ps/rr/rmp ? mcu/ps/rr/rmc ? mcu/ps/rr/src RR LAPDm (5/10) ? Layer 2 ? Provide SAPI0/SAPI3 connections ? Transfer layer 3 message ? Sequence control ? Segmentation and reassembly of frames ? SAPs ? RMC_LAPDM_SAP – RMC ? LAPDM_MPAL_SAP – MPAL ? Source ? mcu/ps/rr/lapdm ? Mobile Physical Abstraction Layer – Adaptation to L1 ? SAPs – RRM_MPAL_SAP – RRM – RMPC_MPAL_SAP – RMPC – MAC_MPAL_SAP – MAC ? Source – mcu/ps/rr/mpal RRMPAL (6/10) RR RLC (7/10) ? Radio Link Control ? Request TBF establishment or release ? Segmentation of LLC PDUs ? Acknowledged/Unacknowledged data transfer ? SAPs ? LLC_RLC_SAP – LLC ? RLC_REASM_SAP – REASM ? RLC_MAC_SAP – MAC ? RLC_RMPC_SAP – RMPC ? Source ? mcu/ps/rr/rlc ? Reassemble – To put non realtime constraint task into another Task – Re assemble Downlink RLC/MAC blocks ? SAPs – LLC_RLC_SAP – LLC – RLC_REASM_SAP – REASM ? Source – mcu/ps/rr/rlc Reasm (8/10) RRMAC (9/10) ? Medium Access Control ? Handling TBF establishment and release ? Transfer or receive RLC data blocks ? Handling control messages received on PACCH ? Packet Resource Request, Packet PDCH release and etc… ? Forward PMO or PCCO to RMPC ? Handling PSI messages received on PACCH ? Sending Packet Measurement Repor
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