Timer | Start | Stop | At expiry |
---|---|---|---|
T300 | Upon transmission of RRCSetupRequest. | Upon reception of RRCSetup or RRCReject message, cell re-selection, relay reselection, and upon abortion of connection establishment by upper layers. | Perform the actions as specified in clause 5.3.3.7. |
T301 | Upon transmission of RRCReestabilshmentRequest | Upon reception of RRCReestablishment or RRCSetup message as well as when the selected cell becomes unsuitable or the (re)selected L2 U2N Relay UE becomes unsuitable, upon reception of notificationMessageSidelink indicating relayUE-HO or relayUE-CellReselection. | Go to RRC_IDLE |
T302 | Upon reception of RRCReject while performing RRC connection establishment or resume, upon reception of RRCRelease with waitTime. | Upon entering RRC_CONNECTED or RRC_IDLE, upon cell re-selection, upon cell change due to relay (re)selection, and upon reception of RRCReject message. | Inform upper layers about barring alleviation as specified in clause 5.3.14.4 |
T304 | Upon reception of RRCReconfiguration message including reconfigurationWithSync for the MCG which does not include sl-PathSwitchConfig, or upon reception of RRCReconfiguration message including reconfigurationWithSync for the SCG not indicated as deactivated in the NR or E-UTRA message containing the RRCReconfiguration message or upon conditional reconfiguration execution i.e. when applying a stored RRCReconfiguration message including reconfigurationWithSync. | Upon successful completion of random access on the corresponding SpCell For T304 of SCG, upon SCG release | For T304 of MCG, in case of the handover from NR or intra-NR handover, or path switch from a L2 U2N Relay UE to a NR cell, initiate the RRC re-establishment procedure; In case of handover to NR, perform the actions defined in the specifications applicable for the source RAT. If any DAPS bearer is configured and if there is no RLF in source PCell, initiate the failure information procedure. For T304 of SCG, inform network about the reconfiguration with sync failure by initiating the SCG failure information procedure as specified in clause 5.7.3. |
T310 | Upon detecting physical layer problems for the SpCell i.e. upon receiving N310 consecutive out-of-sync indications from lower layers. | Upon receiving N311 consecutive in-sync indications from lower layers for the SpCell, upon receiving RRCReconfiguration with reconfigurationWithSync for that cell group, upon reception of MobilityFromNRCommand, upon the reconfiguration of rlf-TimersAndConstant, upon initiating the connection re-establishment procedure, upon conditional reconfiguration execution i.e. when applying a stored RRCReconfiguration message including reconfigurationWithSync for that cell group, and upon initiating the MCG failure information procedure. Upon SCG release, if the T310 is kept in SCG. | If the T310 is kept in MCG: If AS security is not activated: go to RRC_IDLE else: initiate the MCG failure information procedure as specified in clause 5.7.3b or the connection re-establishment procedure as specified in clause 5.3.7 or the procedure as specified in clause 5.3.10.3 if any DAPS bearer is configured. If the T310 is kept in SCG, Inform E-UTRAN/NR about the SCG radio link failure by initiating the SCG failure information procedure as specified in clause 5.7.3. |
T311 | Upon initiating the RRC connection re-establishment procedure | Upon selection of a suitable NR cell, or upon selection of a suitable L2 U2N Relay UE, or a cell using another RAT. | Enter RRC_IDLE |
T312 | If T312 is configured in MCG: Upon triggering a measurement report for a measurement identity for which T312 has been configured and useT312 has been set to true, while T310 in PCell is running. If T312 is configured in SCG and useT312 has been set to true: Upon triggering a measurement report for a measurement identity for which T312 has been configured, while T310 in PSCell is running. | Upon receiving N311 consecutive in-sync indications from lower layers for the SpCell, receiving RRCReconfiguration with reconfigurationWithSync for that cell group, upon reception of MobilityFromNRCommand, upon initiating the connection re-establishment procedure, upon the reconfiguration of rlf-TimersAndConstant, upon initiating the MCG failure information procedure, upon conditional reconfiguration execution i.e. when applying a stored RRCReconfiguration message including reconfigurationWithSync for that cell group, and upon the expiry of T310 in corresponding SpCell. Upon SCG release, if the T312 is kept in SCG | If the T312 is kept in MCG initiate the MCG failure information procedure as specified in clause 5.7.3b or the connection re-establishment procedure. If the T312 is kept in SCG, Inform E-UTRAN/NR about the SCG radio link failure by initiating the SCG failure information procedure.as specified in clause 5.7.3. |
T316 | Upon transmission of the MCGFailureInformation message | Upon receiving RRCRelease, RRCReconfiguration with reconfigurationwithSync for the PCell, MobilityFromNRCommand, or upon initiating the re-establishment procedure | Perform the actions as specified in clause 5.7.3b.5. |
T319 | Upon transmission of RRCResumeRequest or RRCResumeRequest1 when the resume procedure is not initiated for SDT. | Upon reception of RRCResume, RRCSetup, RRCRelease, RRCRelease with suspendConfig or RRCReject message, upon cell re-selection or upon relay (re)selection. | Perform the actions as specified in clause 5.3.13.5. |
T319a | Upon transmission of RRCResumeRequest or RRCResumeRequest1 when the resume procedure is initiated for SDT. | Upon reception of RRCResume, RRCSetup, RRCRelease, RRCReject message or upon failure to resume RRC connection for SDT as specified in clause 5.3.13.5 or upon cell reselection. | Perform the actions as specified in clause 5.3.13.5. |
T320 | Upon reception of t320 or upon cell (re)selection to NR from another RAT with validity time configured for dedicated priorities (in which case the remaining validity time is applied). | Upon entering RRC_CONNECTED, upon reception of RRCRelease, when PLMN selection or SNPN selection is performed on request by NAS, when the UE enters RRC_IDLE from RRC_INACTIVE, or upon cell (re)selection to another RAT (in which case the timer is carried on to the other RAT). | Discard the cell reselection priority information provided by dedicated signalling. |
T321 | Upon receiving measConfig including a reportConfig with the reportType set to reportCGI | Upon acquiring the information needed to set all fields of cgi-info, upon receiving measConfig that includes removal of the reportConfig with the reportType set to reportCGI and upon detecting that a cell is not broadcasting SIB1. | Initiate the measurement reporting procedure, stop performing the related measurements. |
T322 | Upon receiving measConfig including reportConfigNR with the reportType set to reportSFTD and drx-SFTD-NeighMeas is set to true. | Upon acquiring the SFTD measurement results, upon receiving measConfig that includes removal of the reportConfig with the reportType set to reportSFTD. | Initiate the measurement reporting procedure, stop performing the related measurements. |
T325 | Upon reception of RRCRelease message with deprioritisationTimer. | Stop deprioritisation of all frequencies or NR signalled by RRCRelease. | |
T330 | Upon receiving LoggedMeasurementConfiguration message | Upon log volume exceeding the suitable UE memory, upon initiating the release of LoggedMeasurementConfiguration procedure | Perform the actions specified in clause 5.5a.1.4 |
T331 | Upon receiving RRCRelease message with measIdleDuration | Upon receiving RRCSetup, RRCResume, RRCRelease with idle/inactive measurement configuration, upon cell selection/reselection to a cell that does not belong to the validityArea (if configured), or upon cell re-selection to another RAT. | Perform the actions as specified in clause 5.7.8.3. |
T342 | Upon transmitting UEAssistanceInformation message with DelayBudgetReport. | Upon releasing delayBudgetReportingConfig during the connection re-establishment/resume procedures, and upon receiving delayBudgetReportingConfig set to release. | No action. |
T345 | Upon transmitting UEAssistanceInformation message with overheatingAssistance | Upon releasing overheatingAssistanceConfig during the connection re-establishment procedure, upon initiating the connection resumption procedure, and upon receiving overheatingAssistanceConfig set to release. | No action. |
T346a (The UE maintains one instance of this timer per cell group) | Upon transmitting UEAssistanceInformation message with drx-Preference. | Upon releasing drx-PreferenceConfig during the connection re-establishment/resume procedures, upon receiving drx-PreferenceConfig set to release, or upon performing MR-DC release. | No action. |
T346b (The UE maintains one instance of this timer per cell group) | Upon transmitting UEAssistanceInformation message with maxBW-Preference. | Upon releasing maxBW-PreferenceConfig during the connection re-establishment/resume procedures, upon receiving maxBW-PreferenceConfig set to release, or upon performing MR-DC release. | No action. |
T346c (The UE maintains one instance of this timer per cell group) | Upon transmitting UEAssistanceInformation message with maxCC-Preference. | Upon releasing maxCC-PreferenceConfig during the connection re-establishment/resume procedures, upon receiving maxCC-PreferenceConfig set to release, or upon performing MR-DC release. | No action. |
T346d (The UE maintains one instance of this timer per cell group) | Upon transmitting UEAssistanceInformation message with maxMIMO-LayerPreference. | Upon releasing maxMIMO-LayerPreferenceConfig during the connection re-establishment/resume procedures, upon receiving maxMIMO-LayerPreferenceConfig set to release, or upon performing MR-DC release. | No action. |
T346e (The UE maintains one instance of this timer per cell group) | Upon transmitting UEAssistanceInformation message with minSchedulingOffsetPreference. | Upon releasing minSchedulingOffsetPreferenceConfig during the connection re-establishment/resume procedures, upon receiving minSchedulingOffsetPreferenceConfig set to release, or upon performing MR-DC release. | No action. |
T346f | Upon transmitting UEAssistanceInformation message with releasePreference. | Upon releasing releasePreferenceConfig during the connection re-establishment/resume procedures, or upon receiving releasePreferenceConfig set to release. | No action. |
T346g | Upon transmitting UEAssistanceInformation message with musim-PreferredRRC-State. | Upon receiving RRCRelease, or upon receiving musim-LeaveAssistanceConfig set to release. | Perform the actions as specified in clause 5.3.8.6. |
T346h | Upon transmitting UEAssistanceInformation message with musim-GapPreferenceList Information. | Upon releasing musim-GapAssistanceConfig during the connection re-establishment/resume procedures, or upon receiving musim-GapAssistanceConfig set to release. | No action. |
T346i | Upon transmitting UEAssistanceInformation message with scg-DeactivationPreference | Upon releasing scg-DeactivationPreferenceConfig during RRC connection re-establishment/resume or upon receiving scg-DeactivationPreferenceConfig set to release. | No action. |
T346j (The UE maintains one instance of this timer per cell group) | Upon transmitting UEAssistanceInformation message with rlm-RelaxationReportingConfig. | Upon releasing rlm-RelaxationReportingConfig during the connection re-establishment/resume procedures, upon receiving rlm-RelaxationReportingConfig set to release, or upon performing MR-DC release. | No action. |
T346k (The UE maintains one instance of this timer per cell group) | Upon transmitting UEAssistanceInformation message with bfd-RelaxationReportingConfig. | Upon releasing bfd-RelaxationReportingConfig during the connection re-establishment/resume procedures, upon receiving bfd-RelaxationReportingConfig set to release, or upon performing MR-DC release. | No action. |
T350 | Upon transmitting DedicatedSIBRequest message with requestedSIB-List and/or requestedPosSIB-List. | Upon acquiring the requested SIB(s) or posSIB(s), upon releasing onDemandSIB-Request during the connection re-establishment procedures, upon receiving onDemandSIB-Request set to release, upon reception of RRCRelease or upon successful change of PCell while in RRC_CONNECTED. | No action |
T380 | Upon reception of t380 in RRCRelease. | Upon reception of RRCResume, RRCSetup or RRCRelease. | Perform the actions as specified in clause 5.3.13. |
T390 | When access attempt is barred at access barring check for an Access Category. The UE maintains one instance of this timer per Access Category. | Upon cell (re)selection, upon relay (re)selection, upon entering RRC_CONNECTED, upon reception of RRCReconfiguration including reconfigurationWithSync, upon change of PCell while in RRC_CONNECTED, upon reception of MobilityFromNRCommand, or upon reception of RRCRelease. | Perform the actions as specified in clause 5.3.14.4. |
T400 | Upon transmission of RRCReconfigurationSidelink | Upon reception of RRCReconfigurationFailureSidelink or RRCReconfigurationCompleteSidelink | Perform the Sidelink radio link failure related actions as specified in clause 5.8.9.3. |
T420 | Upon reception of the RRCReconfiguration message including sl-PathSwitchConfig | Upon successfully sending RRCReconfigurationComplete message (i.e., PC5 RLC acknowledgement is received from target L2 U2N Relay UE) | Perform the RRC re-establishment procedure as specified in clause 5.3.7. |
T430 | Start or restart from the subframe indicated by epochTime upon reception of SIB19, or upon reception of RRCReconfiguration message for the target cell including reconfigurationWithSync, or upon conditional reconfiguration execution i.e. when applying a stored RRCReconfiguration message for the target cell including reconfigurationWithSync. | Stop T430, if it is running, for the source cell upon reception of RRCReconfiguration message including reconfigurationWithSync, or upon conditional reconfiguration execution i.e. when applying a stored RRCReconfiguration message including reconfigurationWithSync. | Perform the actions as specified in clause 5.2.2.6. |
Counter | Reset | Incremented | When reaching max value |
---|---|---|---|
N310 | Upon reception of "in-sync" indication from lower layers; upon receiving RRCReconfiguration with reconfigurationWithSync for that cell group; upon initiating the connection re-establishment procedure. | Upon reception of "out-of-sync" from lower layer while the timer T310 is stopped. | Start timer T310 |
N311 | Upon reception of "out-of-sync" indication from lower layers; upon receiving RRCReconfiguration with reconfigurationWithSync for that cell group; upon initiating the connection re-establishment procedure. | Upon reception of the "in-sync" from lower layer while the timer T310 is running. | Stop the timer T310. |
Constant | Usage |
---|---|
N310 | Maximum number of consecutive "out-of-sync" indications for the SpCell received from lower layers |
N311 | Maximum number of consecutive "in-sync" indications for the SpCell received from lower layers |
VarResumeMAC-Input field descriptions |
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targetCellIdentity
An input variable used to calculate the resumeMAC-I. Set to the cellIdentity of the first PLMN-Identity included in the PLMN-IdentityInfoList broadcasted in SIB1 of the target cell i.e. the cell the UE is trying to resume.
|
source-c-RNTI
Set to C-RNTI that the UE had in the PCell it was connected to prior to suspension of the RRC connection.
|
sourcePhysCellId
Set to the physical cell identity of the PCell the UE was connected to prior to suspension of the RRC connection.
|
VarShortMAC-Input field descriptions |
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targetCellIdentity
An input variable used to calculate the shortMAC-I. Set to the cellIdentity of the first PLMN-Identity in the PLMN-IdentityInfoList broadcasted in SIB1 of the target cell i.e. the cell the UE is trying to reestablish the connection.
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source-c-RNTI
Set to C-RNTI that the UE had in the PCell it was connected to prior to the reestablishment.
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sourcePhysCellId
Set to the physical cell identity of the PCell the UE was connected to prior to the reestablishment.
|