Evolved Universal Terrestrial Radio Access (E-UTRA); User Equipment (UE) procedures in idle mode
The present document specifies the Access Stratum (AS) part of the Idle Mode procedures applicable to a UE. The non-access stratum (NAS) part of Idle mode procedures and processes is specified in TS 23.122 [5].
The present document specifies the model for the functional division between the NAS and AS in a UE.
The present document applies to all UEs that support at least E-UTRA, including multi-RAT UEs as described in 3GPP specifications, in the following cases:
- When the UE is camped on an E-UTRA cell;
- When the UE is searching for a cell to camp on;
NOTE: When the UE is camped on or searching for a cell to camp on belonging to other RATs, the UE behaviour is described in the specifications of the other RAT.
The Idle Mode procedures defined in this specification are also applicable for a UE in RRC_INACTIVE state unless specified otherwise.