UE Release

小囡囡

IE/Group Name	Presence	Range	IE Type and  Reference	Semantics  Description
CHOICE Cause Group	M
>Radio Network Layer
>>Radio Network Layer Cause	M		ENUMERATED   (Unspecified,    TX2RELOCOverall Expiry,    Successful Handover,    Release due to E-UTRAN Generated  Reason,    Handover Cancelled, Partial  Handover, Handover Failure In Target EPC/eNB Or  Target System,    Handover Target not allowed,    TS1RELOCoverall Expiry,    TS1RELOCprep Expiry,    Cell not available,    Unknown Target ID,    No Radio Resources Available in Target Cell, Unknown or already allocated MME  UE S1AP ID,    Unknown or  already allocated eNB UE S1AP ID,    Unknown or  inconsistent pair of UE S1AP ID, Handover desirable for radio reasons,    Time critical  handover,    Resource  optimisation handover,    Reduce load in  serving cell, User inactivity,    Radio Connection With UE Lost, Load Balancing TAU Required, CS  Fallback Triggered,    UE Not  Available For PS Service, Radio resources not  available,    Failure in the Radio Interface Procedure,    Invalid QoS combination, Inter-RAT redirection,    Interaction with other procedure,  Unknown E-RAB ID, Multiple E-RAB ID  instances, Encryption and/or integrity protection  algorithms not supported, S1 intra system Handover triggered, S1 inter system  Handover triggered, X2 Handover triggered    …,    Redirection  towards 1xRTT,    Not supported  QCI value,    invalid CSG  Id)
>Transport Layer
>>Transport Layer Cause	M		ENUMERATED   (Transport Resource Unavailable,    Unspecified,   …)
>NAS
>>NAS Cause	M		ENUMERATED (Normal Release,    Authentication failure,    Detach,    Unspecified,    …,    CSG  Subscription Expiry)
>Protocol
>>Protocol Cause	M		ENUMERATED   (Transfer Syntax Error,   Abstract Syntax Error (Reject),   Abstract Syntax Error (Ignore and Notify),   Message not Compatible with Receiver   State,    Semantic  Error,    Abstract  Syntax Error (Falsely Constructed Message), Unspecified, …)
>Misc
>>Miscellaneous Cause	M		ENUMERATED   (Control Processing Overload, Not enough User Plane Processing Resources,   Hardware Failure,   O&M Intervention,   Unspecified, Unknown PLMN, …)