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来源：互联网发布：扬州网络电视台编辑：程序博客网时间：2024/06/17 23:00

                            **WCDMA信令流程总结**

CS域MT通话
1. Paging CN->SRN
2. PagingType1 SRNC->UE
3. RRCConnectionRequest UE->SRNC
4. RRCConnectionSetup SRNC->UE
5. RRCConnectionSetupComple UE->SRNC
6. InitialDirectTransfer(PagingResponse) UE->SRNC
7. Initial UE Message(Paging Response) SRNC->CN
RRC 建立
8. DL Direct Transfer(AuthenticationRequest) CN->UE
9. UL Direct Transfer(AuthenticationResponse) UE->CN
10.CommandID CN->SRNC
11.Security Mode Command SRNC->UE
12.Security Mode Command Complete UE->SRNC
13.Security Mode Command Complete SRNC->CN
鉴权加密
14.DL Direct Transfer(Setup) CN->UE
15.UL Direct Transfer(Call Confirmed) UE->CN
16.RAB AssignmentRequest(Establishment) CN->SRNC
17.Radio Bearer Setup SRNC->UE
18.Radio Bearer Setup complete UE->SRNC
19.RAB Asiignment Response SRNC->CN
通话过程
20.UL Direct Transfer(Disconnect) UE->CN
21.DL Direct Transfer(Release) CN->UE
22.UL Direct Transfer(ReleaseComplete) UE->CN
23.Iu Release Command CN->SRNC
24.Radio Bear Release SRNC->UE
25.Radio Bearer Release Complete CN->SRNC
26.Iu Release Complete CN->SRNC
27.RRC Connection Release SRNC->UE
28.RRC Connection Release Complete UE->SRNC

SRNC Serving Radio Network Control 服务RNC

请各位网友指正，共同学习

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