建立會話
UE在註冊後,方可建立會話,實現業務數據的傳輸服務。
信令流程
信令解析
Step1 PDU Session Establishment Request: UE -> AMF
UE在NAS信息中攜帶以下信息:
- S-NSSAI(s)
- UE Requested DNN
- PDU Session ID:UE爲新會話分配的ID
- Request type:Initial Request
- N1 SM container (PDU Session Establishment Request)
其中PDU Session Establishment Request又包含:
- PDU Session ID
- Requested PDU Session Type:IPv4、IPv6、IPv4v6
- Requested SSC mode
- 5GSM Capability
- PCO
- SM PDU DN Request Container
- UE Integrity Protection Maximum Data Rate
- [Number Of Packet Filters]、 [Header Compression Configuration]、[Always-on PDU Session