ETSI - TS 125 304
Universal Mobile Telecommunications System (UMTS); User Equipment (UE) procedures in idle mode and procedures for cell reselection in connected mode
|Publication Date:||1 July 2018|
The present document specifies the Access Stratum (AS) part of the Idle Mode procedures applicable to a UE. The nonaccess stratum (NAS) part of Idle mode procedures and processes is specified in .
The present document also specifies cell selection and reselection processes applicable to UEs in connected mode. Invocation of these processes is described in .
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 UTRA, including multi-RAT UEs as described in 3GPP specifications, in the following cases:
- When the UE is camped on a UTRA cell;
- When the UE is searching for a cell to camp on;
NOTE: The details for those cases are described in the specifications of the other RAT.
The present document presents also examples of inter-layer procedures related to the idle mode processes and describes idle mode functionality of a multi-RAT UTRA/GSM/E-UTRA UE.
The present document also specifies how idle-mode and reselection procedures are affected by the provision of MBMS services.