信令网_gsm主叫信令流程图_被叫信令(18)

Layer 3 Downlink 11:13:44.473 CCCH IMMEDIATE ASSIGNMENT 立即指配

Layer 3 Uplink 11:13:44.714 SDCCH CM SERVICE REQUEST 服务类型请求

Layer 3 Downlink 11:13:45.151 SDCCH AUTHENTICATION REQUEST鉴权请求

Layer 3 Uplink 11:13:45.890 SDCCH AUTHENTICATION RESPONSE鉴权响应

Layer 3 Downlink 11:13:46.093 SDCCH CM SERVICE ACCEPT服务类型请求回应

Layer 3 Uplink 11:13:46.597 SDCCH SETUP 分配SD

Layer 3 Downlink 11:13:46.799 SDCCH CALL PROCEEDING 开始呼叫

Layer 3 Downlink 11:13:47.269 SDCCH ASSIGNMENT COMMAND 业务信道分配

Layer 3 Uplink 11:13:47.458 FACCH ASSIGNMENT COMPLETE业务信道分配完成

Call Connect Success 11:13:47.458 呼叫成功,表示主叫接入网络

被叫做位置更新 Cell Reselection 11:13:50.490

Old Cellular System: GSM 900

Old LAC: 14081

Old Cell Identification: 41701

New Cellular System: GSM 900

New LAC: 14129

New Cell Identification: 1413

立即指配 Layer 3 Downlink 11:13:52.953 CCCH IMMEDIATE ASSIGNMENT

Layer 2 Uplink 11:13:53.005 RACH RANDOM_ACCESS_BURST

信道请求

原因:用于位置更新 Layer 3 Uplink 11:13:53.005 RACH CHANNEL REQUEST

M Establishment Cause (hex data: 07)

Meaning of establishment cause: Location updating and the networksets NECI bit to 1

立即指配 Layer 3 Downlink 11:13:53.092 CCCH IMMEDIATE ASSIGNMENT

位置更新请求 Layer 3 Uplink 11:13:53.211 SDCCH LOCATION UPDATINGREQUEST

TOM解释 Location Update Attempt 11:13:53.211

位置更新请求相应 Layer 3 Downlink 11:13:53.650 SDCCH LOCATION UPDATINGACCEPT

位置更新请求相应 Location Update Accepted 11:13:53.650

Old LAC: 14081

New LAC: 14129

Mobile Country Code: 460

Mobile Network Code: 0

TMSI重分配 Layer 3 Uplink 11:13:53.917 SDCCH TMSI REALLOCATIONCOMPLETE

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