信令流程和分析-在線瀏覽
2025-03-26 21:26本頁面
【正文】 TCH/ TCH/ SACCH FACCH TCH 業(yè)務(wù)信道 42 Control channel CCH DCCH SDCCH ACCH SACCH FACCH CCCH RACH CBCH PCH/AGCH BCCH BCCH SCH FCCH 控制信道 43 信道組合 i) TCH/F + FACCH/F + SACCH/F ii) TCH/H(0,1) + FACCH/H(0,1) + SACCH/TH(0,1) iii) TCH/H(0,0) + FACCH/H(0,1) + SACCH/TH(0,1) + TCH/H(1,1) iv) FCCH + SCH + BCCH + CCCH v) FCCH + SCH + BCCH + CCCH + SDCCH/4 + SACCH/C4 vi) BCCH + CCCH vii) SDCCH/8 + SACCH/C8 CCCH = PCH + RACH + AGCH 44 GSM系統(tǒng)信令結(jié)構(gòu) Um Abis A BTS BSC MSC L1 L2 L3 MS TDMA LAPDm RR MM CM TDMA PCM LAPDm LAPD RR BTSM PCM LAPD RR BTSM PCM BSSMAP SCCP MTP PCM BSSMAP SCCP MTP MM CM MS TDMA : Time Division Muple Access LAPDm: Link Access Protocol for Dm Channel RR : Radio Resource MM : Mobility Management CM : Connection Management PCM : Pulse Code Modulation LAPD : Link Access Protocol for D channel BTSM : Base Transceiver Station Management MTP : Message Transfer Part SCCP : Signalling Connection Control Part BSSMAP: Base Station System Mobile Application Part L1 : Layer 1 L2 : Layer 2 L3 : Layer 3 45 MS BSC Channel activation ack Channel activation Encryption mand Channel required Complete Layer 3 Info. Authentication request Call proceeding Cipher Mode Complete SABM(cm_serv_req) Immediate assign mand establish indication BTS Channel request UA(cm_serv_req) Cipher Mode Command Immediate assignment MSC Authentication response Setup Cipher Mode Command Cipher Mode Complete 主叫流程之一 46 主叫流程之二 MS BSC BTS MSC Assignment Request Channel activation ack Assignment mand establish indication Assignment Complete Assignment Complete Deactivate SACCH Release request Release confirm RF Channle release RF Channel release ack Alerting Connect Connect acknowledge SABM UA Channel activation 47 MS BSC BTS MSC 主叫流程之三 Channel Release Release Complete Release Clear Command RF Channle release DISC Deactivate SACCH RF Channel release ack Release Indication UA Disconnect Clear Complete 48 被叫流程之一 MS BSC BTS MSC Channel activation ack Channel activation Encryption mand Channel required Complete Layer 3 Info. Authentication request Call confirm Cipher Mode Complete SABM(pag_resp) Immediate assign mand establish indication Channel request UA(pag_resp) Cipher Mode Command Immediate assignment Authentication response Setup Cipher Mode Command Cipher Mode Complete Paging Command Paging Request Paging 49 被叫流程之二 MS BSC BTS MSC Assignment Request Channel activation ack Assignment mand e
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