5.3.17 RAN notification area update

36.3313GPPEvolved Universal Terrestrial Radio Access (E-UTRA)Protocol specificationRadio Resource Control (RRC)Release 17TS

5.3.17.1 General

The purpose of this procedure is:

– to notify the network that a UE in RRC_INACTIVE has re-selected to a cell not belonging to the configured RAN notification area; or

– to periodically notify the network by a UE in RRC_INACTIVE;

5.3.17.2 Initiation

When in RRC_INACTIVE state, the UE shall:

1> if T380 expires, or:

1> if RNA Update is triggered at reception of SystemInformationBlockType1, as specified in 5.2.2.7:

2> initiate RRC connection resume procedure in 5.3.3 with cause value set to ‘rna-Update’;

1> if barring is alleviated for Access Category ‘8’ or Access Category ‘2’, as specified in 5.3.16.4:

2> if upper layers do not request RRC the resumption of an RRC connection, and

2> if the variable pendingRnaUpdate is set to ‘TRUE’:

3> initiate RRC connection resume procedure in 5.3.3 with cause value set to ‘rna-Update’;

If the UE in RRC_INACTIVE state fails to find a suitable cell and camps on the acceptable cell to obtain limited service as defined in TS 36.304 [4], the UE shall:

1> perform the actions upon leaving RRC_INACTIVE as specified in 5.3.12 with release cause ‘other’.

5.3.17.3 Inter RAT cell reselection or CN type change

Upon reselecting to an inter-RAT cell or to another CN type, the UE shall:

1> perform the actions upon leaving RRC_INACTIVE as specified in 5.3.12, with release cause ‘other’.