注:下表所列信息交互,包含所有與eNB相關信息(ue <->eNB<->EPC)
- UE initiate UE release
Msg Name |
Entities |
Comment |
UL Information Transfer |
UE->eNB |
NAS Detach Request |
UL NAS Transport |
eNB->MME |
NAS forwarding |
DL NAS Transport |
MME->eNB |
NAS forwarding |
DL Information Transfer |
eNB->UE |
NAS Detach Related |
… |
|
|
UE context release command |
MME->eNB |
UE S1AP ID pair or MME UE S1AP ID |
RRC Connection Release |
eNB->UE |
To release UE with releaseCause |
UE context release complete |
eNB->MME |
Confirm UE release |
|
|
|
- eNB initiated UE release (UE inactivity, UE lost)
Msg Name |
Entities |
Comment |
UE context release request |
eNB->MME |
due to E-UTRAN generated reason, e.g. "User Inactivity", "Radio Connection With UE Lost" |
UE context release command |
MME->eNB |
UE S1AP ID pair or MME UE S1AP ID |
UE context release complete |
eNB->MME |
Confirm UE release |
|
|
|
Note: UE Context Release procedure should be initiated upon reception of an UE CONTEXT RELEASE REQUEST message when the cause is different than "User Inactivity"
- eNB initiated UE release (other cause)
Msg Name |
Entities |
Comment |
UE context release request |
eNB->MME |
due to E-UTRAN generated reason, e.g. "User Inactivity", "Radio Connection With UE Lost" |
DL NAS Transport |
MME->eNB |
NAS forwarding |
DL Information Transfer |
eNB->UE |
NAS Detach Related |
UL Information Transfer |
UE->eNB |
NAS Detach Request |
UL NAS Transport |
eNB->MME |
NAS forwarding |
… |
|
|
UE context release command |
MME->eNB |
UE S1AP ID pair or MME UE S1AP ID |
RRC Connection Release |
eNB->UE |
To release UE with releaseCause |
UE context release complete |
eNB->MME |
Confirm UE release |
|
|
|
- MME initiate UE release (UE Context Release procedure)
Msg Name |
Entities |
Comment |
DL NAS Transport |
MME->eNB |
NAS forwarding |
DL Information Transfer |
eNB->UE |
NAS Detach Related |
UL Information Transfer |
UE->eNB |
NAS Detach Request |
UL NAS Transport |
eNB->MME |
NAS forwarding |
… |
|
|
UE context release command |
MME->eNB |
UE S1AP ID pair or MME UE S1AP ID |
RRC Connection Release |
eNB->UE |
To release UE with releaseCause |
UE context release complete |
eNB->MME |
Confirm UE release |
|
|
|
- eNB initiated UE release (Reset, MME keep UE context)
Msg Name |
Entities |
Comment |
RRC Connection Release |
eNB->UE |
To release UE with releaseCause |
|
|
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