5.3.11 UE actions upon going to RRC_IDLE

38.3313GPPNRProtocol specificationRadio Resource Control (RRC)Release 17TS

The UE shall:

1> reset MAC;

1> set the variable pendingRNA-Update to false, if that is set to true;

1> if going to RRC_IDLE was triggered by reception of the RRCRelease message including a waitTime:

2> if T302 is running:

3> stop timer T302;

2> start timer T302 with the value set to the waitTime;

2> inform upper layers that access barring is applicable for all access categories except categories ‘0’ and ‘2’.

1> else:

2> if T302 is running:

3> stop timer T302;

3> perform the actions as specified in 5.3.14.4;

1> if T390 is running:

2> stop timer T390 for all access categories;

2> perform the actions as specified in 5.3.14.4;

1> if the UE is leaving RRC_INACTIVE:

2> if going to RRC_IDLE was not triggered by reception of the RRCRelease message:

3> if stored, discard the cell reselection priority information provided by the cellReselectionPriorities;

3> stop the timer T320, if running;

1> stop all timers that are running except T302, T320, T325, T330, T331 and T400;

1> discard the UE Inactive AS context, if any;

1> release the suspendConfig, if configured;

1> remove all the entries within the MCG and the SCG VarConditionalReconfig, if any;

1> for each measId, if the associated reportConfig has a reportType set to condTriggerConfig:

2> for the associated reportConfigId:

3> remove the entry with the matching reportConfigId from the reportConfigList within the VarMeasConfig;

2> if the associated measObjectId is only associated to a reportConfig with reportType set to condTriggerConfig:

3> remove the entry with the matching measObjectId from the measObjectList within the VarMeasConfig;

2> remove the entry with the matching measId from the measIdList within the VarMeasConfig;

1> discard the K_gNB key, the S-K_gNB key, the S-K_eNB key, the K_RRCenc key, the K_RRCint key, the K_UPint key and the K_UPenc key, if any;

1> release all radio resources, including release of the RLC entity, the BAP entity, the MAC configuration and the associated PDCP entity and SDAP for all established RBs (except for broadcast MRBs), BH RLC channels, Uu Relay RLC channels, PC5 Relay RLC channels and SRAP entity;

1> indicate the release of the RRC connection to upper layers together with the release cause;

1> inform upper layers about the release of all application layer measurement configurations;

1> discard any application layer measurement reports which were not yet submitted to lower layers for transmission;

1> discard any segments of segmented RRC messages stored according to 5.7.6.3;

1> except if going to RRC_IDLE was triggered by inter-RAT cell reselection while the UE is in RRC_INACTIVE or RRC_IDLE or when selecting an inter-RAT cell while T311 was running or when selecting an E-UTRA cell for EPS fallback for IMS voice as specified in 5.4.3.5:

2> enter RRC_IDLE and perform cell selection as specified in TS 38.304 [20];