7 Variables and constants

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

Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM

7.1 UE variables

NOTE: To facilitate the specification of the UE behavioural requirements, UE variables are represented using ASN.1. Unless explicitly specified otherwise, it is however up to UE implementation how to store the variables. The optionality of the IEs in ASN.1 is used only to indicate that the values may not always be available.

– EUTRA-UE-Variables

This ASN.1 segment is the start of the E‑UTRA UE variable definitions.

— ASN1START

EUTRA-UE-Variables DEFINITIONS AUTOMATIC TAGS ::=

BEGIN

IMPORTS

AbsoluteTimeInfo-r10,

AreaConfiguration-r10,

AreaConfiguration-v1130,

ARFCN-ValueNR-r15,

BT-NameList-r15,

CarrierFreqGERAN,

CellIdentity,

CellList-r15,

CondReconfigurationToAddModList-r16,

ConnEstFailReport-r11,

EUTRA-CarrierList-r15,

SpeedStateScaleFactors,

C-RNTI,

LoggedEventTriggerConfig-r17,

LoggingDuration-r10,

LoggingInterval-r10,

LogMeasInfo-r10,

MeasCSI-RS-Id-r12,

MeasId,

MeasId-v1250,

MeasIdToAddModList,

MeasIdToAddModListExt-r12,

MeasIdToAddModList-v1310,

MeasIdToAddModListExt-v1310,

MeasObjectToAddModList,

MeasObjectToAddModList-v9e0,

MeasObjectToAddModListExt-r13,

MeasResultListExtIdle-r16,

MeasResultListIdle-r15,

MeasResultListIdleNR-r16,

MeasScaleFactor-r12,

MobilityStateParameters,

NeighCellConfig,

NR-CarrierList-r16,

PhysCellId,

PhysCellIdCDMA2000,

PhysCellIdGERAN,

PhysCellIdUTRA-FDD,

PhysCellIdUTRA-TDD,

PLMN-Identity,

PLMN-IdentityList3-r11,

QuantityConfig,

ReportConfigToAddModList,

RLF-Report-r9,

TargetMBSFN-AreaList-r12,

TraceReference-r10,

Tx-ResourcePoolMeasList-r14,

VisitedCellInfoList-r12,

maxCellMeas,

maxCSI-RS-Meas-r12,

maxMeasId,

maxMeasId-r12,

maxRS-Index-r15,

PhysCellIdNR-r15,

RS-IndexNR-r15,

UL-DelayConfig-r13,

ValidityAreaList-r16,

WLAN-CarrierInfo-r13,

WLAN-Identifiers-r12,

WLAN-Id-List-r13,

WLAN-NameList-r15,

WLAN-Status-r13,

WLAN-Status-v1430,

WLAN-SuspendConfig-r14

FROM EUTRA-RRC-Definitions;

— ASN1STOP

– VarConditionalReconfiguration

The UE variable VarConditionalReconfiguration includes the accumulated configuration of conditional reconfigurations (i.e. conditional handovers, conditional PSCell addition or inter-SN conditional PSCell change) including the configurations of triggering conditions to be monitored and the stored RRCConnectionReconfiguration per target candidate, to be applied upon the fulfilment of the associated triggering conditions.

VarConditionalReconfiguration UE variable

— ASN1START

VarConditionalReconfiguration ::= SEQUENCE {

— Conditional reconfigurations list

condReconfigurationList-r16 CondReconfigurationToAddModList-r16

OPTIONAL

}

— ASN1STOP

– VarConnEstFailReport

The UE variable VarConnEstFailReport includes the connection establishment failure information.

VarConnEstFailReport UE variable

— ASN1START

VarConnEstFailReport-r11 ::= SEQUENCE {

connEstFailReport-r11 ConnEstFailReport-r11,

plmn-Identity-r11 PLMN-Identity

}

— ASN1STOP

– VarLogMeasConfig

The UE variable VarLogMeasConfig includes the configuration of the logging of measurements to be performed by the UE while in RRC_IDLE, covering intra-frequency, inter-frequency, inter-RAT mobility and MBSFN related measurements. If MBSFN logging is configured, the UE performs logging of measurements while in both RRC_IDLE and RRC_CONNECTED. Otherwise, the UE performs logging of measurements only while in RRC_IDLE.

VarLogMeasConfig UE variable

— ASN1START

VarLogMeasConfig-r10 ::= SEQUENCE {

areaConfiguration-r10 AreaConfiguration-r10 OPTIONAL,

loggingDuration-r10 LoggingDuration-r10,

loggingInterval-r10 LoggingInterval-r10

}

VarLogMeasConfig-r11 ::= SEQUENCE {

areaConfiguration-r10 AreaConfiguration-r10 OPTIONAL,

areaConfiguration-v1130 AreaConfiguration-v1130 OPTIONAL,

loggingDuration-r10 LoggingDuration-r10,

loggingInterval-r10 LoggingInterval-r10

}

VarLogMeasConfig-r12 ::= SEQUENCE {

areaConfiguration-r10 AreaConfiguration-r10 OPTIONAL,

areaConfiguration-v1130 AreaConfiguration-v1130 OPTIONAL,

loggingDuration-r10 LoggingDuration-r10,

loggingInterval-r10 LoggingInterval-r10,

targetMBSFN-AreaList-r12 TargetMBSFN-AreaList-r12 OPTIONAL

}

VarLogMeasConfig-r15 ::= SEQUENCE {

areaConfiguration-r10 AreaConfiguration-r10 OPTIONAL,

areaConfiguration-v1130 AreaConfiguration-v1130 OPTIONAL,

loggingDuration-r10 LoggingDuration-r10,

loggingInterval-r10 LoggingInterval-r10,

targetMBSFN-AreaList-r12 TargetMBSFN-AreaList-r12 OPTIONAL,

bt-NameList-r15 BT-NameList-r15 OPTIONAL,

wlan-NameList-r15 WLAN-NameList-r15 OPTIONAL

}

VarLogMeasConfig-r17 ::= SEQUENCE {

areaConfiguration-r10 AreaConfiguration-r10 OPTIONAL,

areaConfiguration-v1130 AreaConfiguration-v1130 OPTIONAL,

loggingDuration-r10 LoggingDuration-r10,

loggingInterval-r10 LoggingInterval-r10,

targetMBSFN-AreaList-r12 TargetMBSFN-AreaList-r12 OPTIONAL,

bt-NameList-r15 BT-NameList-r15 OPTIONAL,

wlan-NameList-r15 WLAN-NameList-r15 OPTIONAL,

loggedEventTriggerConfig-r17 LoggedEventTriggerConfig-r17 OPTIONAL,

measUncomBarPre-r17 ENUMERATED {true} OPTIONAL

}

— ASN1STOP

– VarLogMeasReport

The UE variable VarLogMeasReport includes the logged measurements information.

VarLogMeasReport UE variable

— ASN1START

VarLogMeasReport-r10 ::= SEQUENCE {

traceReference-r10 TraceReference-r10,

traceRecordingSessionRef-r10 OCTET STRING (SIZE (2)),

tce-Id-r10 OCTET STRING (SIZE (1)),

plmn-Identity-r10 PLMN-Identity,

absoluteTimeInfo-r10 AbsoluteTimeInfo-r10,

logMeasInfoList-r10 LogMeasInfoList2-r10

}

VarLogMeasReport-r11 ::= SEQUENCE {

traceReference-r10 TraceReference-r10,

traceRecordingSessionRef-r10 OCTET STRING (SIZE (2)),

tce-Id-r10 OCTET STRING (SIZE (1)),

plmn-IdentityList-r11 PLMN-IdentityList3-r11,

absoluteTimeInfo-r10 AbsoluteTimeInfo-r10,

logMeasInfoList-r10 LogMeasInfoList2-r10

}

LogMeasInfoList2-r10 ::= SEQUENCE (SIZE (1..maxLogMeas-r10)) OF LogMeasInfo-r10

— ASN1STOP

– VarMeasConfig

The UE variable VarMeasConfig includes the accumulated configuration of the measurements to be performed by the UE, covering intra-frequency, inter-frequency and inter-RAT mobility related measurements.

NOTE: The amount of measurement configuration information, which a UE is required to store, is specified in clause 11.1. If the number of frequencies configured for a particular RAT exceeds the minimum performance requirements specified in TS 36.133 [16], it is up to UE implementation which frequencies of that RAT are measured. If the total number of frequencies for all RATs provided to the UE in the measurement configuration exceeds the minimum performance requirements specified in TS 36.133 [16], it is up to UE implementation which frequencies/RATs are measured.

VarMeasConfig UE variable

— ASN1START

VarMeasConfig ::= SEQUENCE {

— Measurement identities

measIdList MeasIdToAddModList OPTIONAL,

measIdListExt-r12 MeasIdToAddModListExt-r12 OPTIONAL,

measIdList-v1310 MeasIdToAddModList-v1310 OPTIONAL,

measIdListExt-v1310 MeasIdToAddModListExt-v1310 OPTIONAL,

— Measurement objects

measObjectList MeasObjectToAddModList OPTIONAL,

measObjectListExt-r13 MeasObjectToAddModListExt-r13 OPTIONAL,

measObjectList-v9i0 MeasObjectToAddModList-v9e0 OPTIONAL,

— Reporting configurations

reportConfigList ReportConfigToAddModList OPTIONAL,

— Other parameters

quantityConfig QuantityConfig OPTIONAL,

measScaleFactor-r12 MeasScaleFactor-r12 OPTIONAL,

s-Measure INTEGER (-140..-44) OPTIONAL,

speedStatePars CHOICE {

release NULL,

setup SEQUENCE {

mobilityStateParameters MobilityStateParameters,

timeToTrigger-SF SpeedStateScaleFactors

}

} OPTIONAL,

allowInterruptions-r11 BOOLEAN OPTIONAL

}

— ASN1STOP

– VarMeasIdleConfig

The UE variable VarMeasIdleConfig includes the configuration of the measurements to be performed by the UE while in RRC_IDLE or RRC_INACTIVE for E-UTRA inter-frequency and inter-RAT (i.e. NR) measurements.

VarMeasIdleConfig UE variable

— ASN1START

VarMeasIdleConfig-r15 ::= SEQUENCE {

measIdleCarrierListEUTRA-r15 EUTRA-CarrierList-r15 OPTIONAL,

measIdleDuration-r15 ENUMERATED {sec10, sec30, sec60, sec120,

sec180, sec240, sec300}

}

VarMeasIdleConfig-r16 ::= SEQUENCE {

measIdleCarrierListNR-r16 NR-CarrierList-r16 OPTIONAL,

validityAreaList-r16 ValidityAreaList-r16 OPTIONAL

}

— ASN1STOP

– VarMeasIdleReport

The UE variable VarMeasIdleReport includes the logged measurements information.

VarMeasIdleReport UE variable

— ASN1START

VarMeasIdleReport-r15 ::= SEQUENCE {

measReportIdle-r15 MeasResultListIdle-r15

}

VarMeasIdleReport-r16 ::= SEQUENCE {

measReportIdle-r16 MeasResultListExtIdle-r16 OPTIONAL,

measReportIdleNR-r16 MeasResultListIdleNR-r16 OPTIONAL

}

— ASN1STOP

– VarMeasReportList

The UE variable VarMeasReportList includes information about the measurements for which the triggering conditions have been met.

VarMeasReportList UE variable

— ASN1START

VarMeasReportList ::= SEQUENCE (SIZE (1..maxMeasId)) OF VarMeasReport

VarMeasReportList-r12 ::= SEQUENCE (SIZE (1..maxMeasId-r12)) OF VarMeasReport

VarMeasReport ::= SEQUENCE {

— List of measurement that have been triggered

measId MeasId,

measId-v1250 MeasId-v1250 OPTIONAL,

cellsTriggeredList CellsTriggeredList OPTIONAL,

csi-RS-TriggeredList-r12 CSI-RS-TriggeredList-r12 OPTIONAL,

poolsTriggeredList-r14 Tx-ResourcePoolMeasList-r14 OPTIONAL,

numberOfReportsSent INTEGER

}

CellsTriggeredList ::= SEQUENCE (SIZE (1..maxCellMeas)) OF CHOICE {

physCellIdEUTRA PhysCellId,

physCellIdUTRA CHOICE {

fdd PhysCellIdUTRA-FDD,

tdd PhysCellIdUTRA-TDD

physCellIdGERAN SEQUENCE {

carrierFreq CarrierFreqGERAN,

physCellId PhysCellIdGERAN

physCellIdCDMA2000 PhysCellIdCDMA2000,

wlan-Identifiers-r13 WLAN-Identifiers-r12,

physCellIdNR-r15 SEQUENCE {

carrierFreq ARFCN-ValueNR-r15,

physCellId PhysCellIdNR-r15,

rs-IndexList-r15 SSB-IndexList-r15 OPTIONAL

}

CSI-RS-TriggeredList-r12 ::= SEQUENCE (SIZE (1..maxCSI-RS-Meas-r12)) OF MeasCSI-RS-Id-r12

SSB-IndexList-r15::= SEQUENCE (SIZE (1..maxRS-Index-r15)) OF RS-IndexNR-r15

— ASN1STOP

– VarMobilityHistoryReport

The UE variable VarMobilityHistoryReport includes the mobility history information.

— ASN1START

VarMobilityHistoryReport-r12 ::= VisitedCellInfoList-r12

— ASN1STOP

– VarPendingRnaUpdate

The UE variable VarPendingRnaUpdate indicates whether there is a pending RNAU procedure or not. The setting of this BOOLEAN variable to TRUE means that there is a pending RANU procedure.

VarPendingRnaUpdate UE variable

— ASN1START

VarPendingRnaUpdate-r15 ::= SEQUENCE {

pendingRnaUpdate BOOLEAN OPTIONAL

}

— ASN1STOP

– VarRLF-Report

The UE variable VarRLF-Report includes the radio link failure information or handover failure information.

VarRLF-Report UE variable

— ASN1START

VarRLF-Report-r10 ::= SEQUENCE {

rlf-Report-r10 RLF-Report-r9,

plmn-Identity-r10 PLMN-Identity

}

VarRLF-Report-r11 ::= SEQUENCE {

rlf-Report-r10 RLF-Report-r9,

plmn-IdentityList-r11 PLMN-IdentityList3-r11

}

— ASN1STOP

– VarShortINACTIVE-MAC-Input

The UE variable VarShortINACTIVE-MAC-Input specifies the input used to generate the shortResume-MAC-I during RRC Connection Resume procedure for RRC_INACTIVE.

VarShortINACTIVE-MAC-Input UE variable

— ASN1START

VarShortINACTIVE–MAC-Input-r15 ::= SEQUENCE {

cellIdentity-r15 CellIdentity,

physCellId-r15 PhysCellId,

c-RNTI-r15 C-RNTI

}

— ASN1STOP

VarShortINACTIVE-MAC-Input field descriptions
*cellIdentity* An input variable used to calculate the shortResume-MAC-I. Set to CellIdentity included in cellIdentity (without suffix) in SIB1 of the current cell.
*c-RNTI* Set to C-RNTI that the UE had in the PCell it was connected to prior to suspension of the RRC connection.
*physCellId* Set to the physical cell identity of the PCell the UE was connected to prior to suspension of the RRC connection.

VarShortINACTIVE-MAC-Input field descriptions

cellIdentity

An input variable used to calculate the shortResume-MAC-I. Set to CellIdentity included in cellIdentity (without suffix) in SIB1 of the current cell.

c-RNTI

Set to C-RNTI that the UE had in the PCell it was connected to prior to suspension of the RRC connection.

physCellId

Set to the physical cell identity of the PCell the UE was connected to prior to suspension of the RRC connection.

– VarShortMAC-Input

The UE variable VarShortMAC-Input specifies the input used to generate the shortMAC-I.

VarShortMAC-Input UE variable

— ASN1START

VarShortMAC-Input ::= SEQUENCE {

cellIdentity CellIdentity,

physCellId PhysCellId,

c-RNTI C-RNTI

}

— ASN1STOP

VarShortMAC-Input field descriptions
*cellIdentity* An input variable used to calculate the shortMAC-I. Set to CellIdentity included in cellIdentity (without suffix) in SIB1 of the current cell.
*c-RNTI* Set to C-RNTI that the UE had in the PCell it was connected to prior to the failure.
*physCellId* Set to the physical cell identity of the PCell the UE was connected to prior to the failure.

VarShortMAC-Input field descriptions

cellIdentity

An input variable used to calculate the shortMAC-I. Set to CellIdentity included in cellIdentity (without suffix) in SIB1 of the current cell.

c-RNTI

Set to C-RNTI that the UE had in the PCell it was connected to prior to the failure.

physCellId

Set to the physical cell identity of the PCell the UE was connected to prior to the failure.

– VarShortResumeMAC-Input

The UE variable VarShortResumeMAC-Input specifies the input used to generate the shortResumeMAC-I during RRC Connection Resume procedure.

VarShortResumeMAC-Input UE variable

— ASN1START

VarShortResumeMAC-Input-r13 ::= SEQUENCE {

cellIdentity-r13 CellIdentity,

physCellId-r13 PhysCellId,

c-RNTI-r13 C-RNTI,

resumeDiscriminator-r13 BIT STRING(SIZE(1))

}

— ASN1STOP

VarShortResumeMAC-Input field descriptions
*cellIdentity* An input variable used to calculate the shortResumeMAC-I. Set to CellIdentity included in cellIdentity (without suffix) in SIB1 of the current cell.
*c-RNTI* Set to C-RNTI that the UE had in the PCell it was connected to prior to suspension of the RRC connection.
*physCellId* Set to the physical cell identity of the PCell the UE was connected to prior to suspension of the RRC connection.
*resumeDiscriminator* A constant that allows differentiation in the calculation of the MAC-I for shortResumeMAC-I The resumeDiscriminator is set to ‘1’

VarShortResumeMAC-Input field descriptions

cellIdentity

An input variable used to calculate the shortResumeMAC-I. Set to CellIdentity included in cellIdentity (without suffix) in SIB1 of the current cell.

c-RNTI

Set to C-RNTI that the UE had in the PCell it was connected to prior to suspension of the RRC connection.

physCellId

Set to the physical cell identity of the PCell the UE was connected to prior to suspension of the RRC connection.

resumeDiscriminator

A constant that allows differentiation in the calculation of the MAC-I for shortResumeMAC-I

The resumeDiscriminator is set to ‘1’

– VarWLAN-MobilityConfig

The UE variable VarWLAN-MobilityConfig includes information about WLAN for access selection and mobility.

VarWLAN-MobilityConfig UE variable

— ASN1START

VarWLAN-MobilityConfig ::= SEQUENCE {

wlan-MobilitySet-r13 WLAN-Id-List-r13 OPTIONAL,

successReportRequested ENUMERATED {true} OPTIONAL,

wlan-SuspendConfig-r14 WLAN-SuspendConfig-r14 OPTIONAL

}

— ASN1STOP

VarWLAN-MobilityConfig field descriptions
*wlan-MobilitySet* Indicates the WLAN mobility set configured.
*successReportRequested* Indicates whether the UE shall report successful connection to WLAN. Applicable to LWA and LWIP.

VarWLAN-MobilityConfig field descriptions

wlan-MobilitySet

Indicates the WLAN mobility set configured.

successReportRequested

Indicates whether the UE shall report successful connection to WLAN. Applicable to LWA and LWIP.

– VarWLAN-Status

The UE variable VarWLAN-Status includes information about the status of WLAN connection for LWA, RCLWI or LWIP.

VarWLAN-Status UE variable

— ASN1START

VarWLAN-Status-r13 ::= SEQUENCE {

status-r13 WLAN-Status-r13,

status-r14 WLAN-Status-v1430 OPTIONAL

}

— ASN1STOP

VarWLAN-Status field descriptions
*status* Indicates the connection status to WLAN and causes for connection failures.

VarWLAN-Status field descriptions

status

Indicates the connection status to WLAN and causes for connection failures.

– Multiplicity and type constraint definitions

This clause includes multiplicity and type constraints applicable (only) for UE variables.

— ASN1START

maxLogMeas-r10 INTEGER ::= 4060– Maximum number of logged measurement entries

— that can be stored by the UE

— ASN1STOP

– End of EUTRA-UE-Variables

— ASN1START

END

— ASN1STOP

7.1a NB-IoT UE variables

– NBIOT-UE-Variables

This ASN.1 segment is the start of the NB-IoT UE variable definitions.

— ASN1START

NBIOT-UE-Variables DEFINITIONS AUTOMATIC TAGS ::=

BEGIN

IMPORTS

CellGlobalIdEUTRA,

maxFreq,

PLMN-IdentityList3-r11

FROM EUTRA-RRC-Definitions

VarShortMAC-Input,

VarShortResumeMAC-Input-r13

FROM EUTRA-UE-Variables

ANR-CarrierList-NB-r16,

ANR-MeasResult-NB-r16,

maxFreqANR-NB-r16,

MeasResultServCell-NB-r14,

NRSRP-Range-NB-r14,

RLF-Report-NB-r16

FROM NBIOT-RRC-Definitions;

— ASN1STOP

– VarANR-MeasConfig-NB

The UE variable VarANR-MeasConfig-NB includes the configuration of the measurements to be performed by the UE in RRC_IDLE for ANR. The UE performs these measurements once while in RRC_IDLE and only in the cell where it receives the measurement configuration.

VarANR-MeasConfig-NB

— ASN1START

VarANR-MeasConfig-NB-r16::= SEQUENCE {

anr-QualityThreshold-r16 NRSRP-Range-NB-r14,

anr-CarrierList-r16 ANR-CarrierList-NB-r16

}

— ASN1STOP

– VarANR-MeasReport-NB

The UE variable VarANR-MeasReport-NB includes the stored ANR measurements information.

VarANR-MeasReport-NB

— ASN1START

VarANR-MeasReport-NB-r16::= SEQUENCE {

plmn-IdentityList-r16 PLMN-IdentityList3-r11,

servCellIdentity-r16 CellGlobalIdEUTRA,

measResultServCell-r16 MeasResultServCell-NB-r14,

relativeTimeStamp-r16 INTEGER (0..95),

measResultList-r16 SEQUENCE (SIZE (1..maxFreqANR-NB-r16)) OF ANR-MeasResult-NB-r16

}

— ASN1STOP

– VarRLF-Report-NB

The UE variable VarRLF-Report-NB includes the radio link failure information.

VarRLF-Report-NB UE variable

— ASN1START

VarRLF-Report-NB-r16 ::= SEQUENCE {

rlf-Report-r16 RLF-Report-NB-r16,

plmn-IdentityList-r16 PLMN-IdentityList3-r11

}

— ASN1STOP

– VarShortMAC-Input-NB

The UE variable VarShortMAC-Input-NB specifies the input used to generate the shortMAC-I.

VarShortMAC-Input-NB UE variable

— ASN1START

VarShortMAC-Input-NB-r13 ::= VarShortMAC-Input

— ASN1STOP

– VarShortResumeMAC-Input-NB

The UE variable VarShortResumeMAC-Input-NB specifies the input used to generate the shortResumeMAC-I during RRC Connection Resume procedure.

VarShortResumeMAC-Input-NB UE variable

— ASN1START

VarShortResumeMAC-Input-NB-r13 ::= VarShortResumeMAC-Input-r13

— ASN1STOP

– End of NBIOT-UE-Variables

— ASN1START

END

— ASN1STOP

7.2 Counters

Counter	Reset	Incremented	When reaching max value

7.3 Timers

7.3.1 Timers (Informative)

Timer	Start	Stop	At expiry
T300 NOTE1	Transmission of RRCConnectionRequest or RRCConnectionResumeRequest or RRCEarlyDataRequest	Reception of RRCConnectionSetup, RRCConnectionReject or RRCConnectionResume or RRCEarlyDataComplete or RRCConnectionRelease for UP-EDT, cell re-selection and upon abortion of connection establishment by upper layers	Perform the actions as specified in 5.3.3.6
T301 NOTE1	Transmission of RRCConnectionReestabilshmentRequest	Reception of RRCConnectionReestablishment or RRCConnectionReestablishmentReject message as well as when the selected cell becomes unsuitable	Go to RRC_IDLE
T302	Reception of RRCConnectionReject while performing RRC connection establishment or reception of RRCConnectionRelease including waitTime	Upon entering RRC_CONNECTED and upon cell re-selection, or upon reception of RRCEarlyDataComplete or RRCConnectionRelease for UP-EDT or RRCConnectionRelease for UP transmission using PUR, or upon reception of RRCConnectionReject message for E-UTRA/5GC.	Inform upper layers about barring alleviation as specified in 5.3.3.7
T303	Access barred while performing RRC connection establishment for mobile originating calls	Upon entering RRC_CONNECTED and upon cell re-selection, or upon reception of RRCEarlyDataComplete or RRCConnectionRelease for UP-EDT or RRCConnectionRelease for UP transmission using PUR.	Inform upper layers about barring alleviation as specified in 5.3.3.7
T304	Reception of RRCConnectionReconfiguration message including the MobilityControl Info or reception of MobilityFromEUTRACommand message including CellChangeOrder or upon conditional reconfiguration execution i.e. when applying a stored RRCConnectionReconfiguration message including the MobilityControl Info.	Criterion for successful completion of handover within E-UTRA, handover to E-UTRA or cell change order is met (the criterion is specified in the target RAT in case of inter-RAT)	In case of cell change order from E-UTRA or intra E-UTRA handover, initiate the RRC connection re-establishment procedure; In case of handover to E-UTRA, 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.
T305	Access barred while performing RRC connection establishment for mobile originating signalling	Upon entering RRC_CONNECTED and upon cell re-selection, or upon reception of RRCEarlyDataComplete or RRCConnectionRelease for UP-EDT or RRCConnectionRelease for UP transmission using PUR.	Inform upper layers about barring alleviation as specified in 5.3.3.7
T306	Access barred while performing RRC connection establishment for mobile originating CS fallback.	Upon entering RRC_CONNECTED and upon cell re-selection, or upon reception of RRCEarlyDataComplete or RRCConnectionRelease for UP-EDT or RRCConnectionRelease for UP transmission using PUR.	Inform upper layers about barring alleviation as specified in 5.3.3.7
T307	Reception of RRCConnectionReconfiguration message including MobilityControlInfoSCG	Successful completion of random access on the PSCell, upon initiating re-establishment and upon SCG release	Initiate the SCG failure information procedure as specified in 5.6.13.
T308	Access barred due to ACDC while performing RRC connection establishment subject to ACDC	Upon entering RRC_CONNECTED and upon cell re-selection, or upon reception of RRCEarlyDataComplete or RRCConnectionRelease for UP-EDT or RRCConnectionRelease for UP transmission using PUR.	Inform upper layers about barring alleviation for ACDC as specified in 5.3.3.7
T309 NOTE1	When access attempt is barred at access barring check for an Access Category. The UE shall maintain one instance of this timer per Access Category.	Upon entering RRC_CONNECTED, upon cell (re)selection, upon reception of RRCConnectionRelease, upon change of PCell while in RRC_CONNECTED, or upon reception of MobilityFromEUTRACommand.	Perform the actions as specified in 5.3.16.4.
T310 NOTE1 NOTE2	Upon detecting physical layer problems for the PCell 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 PCell, upon triggering the handover procedure, upon initiating the connection re-establishment procedure, and upon initiating the MCG failure information procedure.	If security is not activated and the UE is not a NB-IoT UE that supports RRC connection re-establishment for the Control Plane CIoT EPS/5GS optimisation: go to RRC_IDLE else: initiate the MCG failure information procedure as specified in 5.6.26 or the connection re-establishment procedure as specified in 5.3.7.
T311 NOTE1	Upon initiating the RRC connection re-establishment procedure	Selection of a suitable E-UTRA cell or a cell using another RAT.	Go to RRC_IDLE
T312 NOTE2	Upon triggering a measurement report for a measurement identity for which T312 has been configured and useT312 has been set to true, while T310 is running	Upon receiving N311 consecutive in-sync indications from lower layers, upon triggering the handover procedure, upon initiating the connection re-establishment procedure, upon initiating the MCG failure information procedure, and upon the expiry of T310	Initiate the MCG failure information procedure as specified in 5.6.26 or the connection re-establishment procedure as specified in 5.3.7.
T313 NOTE2	Upon detecting physical layer problems for the PSCell i.e. upon receiving N313 consecutive out-of-sync indications from lower layers	Upon receiving N314 consecutive in-sync indications from lower layers for the PSCell, upon initiating the connection re-establishment procedure, upon SCG release and upon receiving RRCConnectionReconfiguration including MobilityControlInfoSCG	Inform E-UTRAN about the SCG radio link failure by initiating the SCG failure information procedure as specified in 5.6.13.
T314 NOTE2	Upon early detecting physical layer problems for the PCell i.e. upon receiving N310 consecutive "early-out-of-sync" indications from lower layers.	Upon receiving N311 consecutive in-sync indications from lower layers for the PCell, upon triggering the handover procedure and upon initiating the connection re-establishment procedure	Initiate the UE Assistance Information procedure to report early detection of physical layer problems in accordance with 5.6.10.
T315 NOTE2	Upon detecting physical layer improvements of the PCell i.e. upon receiving N311 consecutive "early-in-sync" indications from lower layers.	Upon receiving N310 consecutive "early-out-of-sync" indications from lower layers for the PCell.	Initiate the UE Assistance Information procedure to report detection of physical layer improvements in accordance with 5.6.10.
T316	Upon transmission of the MCGFailureInformation message	Upon receiving RRCConnectionRelease, RRCConnectionReconfiguration with mobilityControlInfo, MobilityFromEUTRACommand, or upon initiaitng the re-establishment procedure,	Perform the actions as specified in 5.6.26.5.
T317 NOTE1	Upon acquisition of SystemInformationBlockType31		In RRC_CONNECTED mode, initiate acquisition of SystemInformationBlockType31 in accordance with 5.3.3.21.
T318 NOTE1	Upon starting acquisition of SystemInformationBlockType31 in RRC_CONNECTED	Upon successful acquisition of SystemInformationBlockType31in RRC_CONNECTED	If security is not activated and the UE is not a NB-IoT UE that supports RRC connection re-establishment for the Control Plane CIoT EPS optimisation: go to RRC_IDLE else: initiate the connection re-establishment procedure as specified in 5.3.7.
T320	Upon receiving t320 or upon cell (re)selection to E-UTRA from another RAT with validity time configured for dedicated priorities (in which case the remaining validity time is applied).	Upon entering RRC_CONNECTED, when PLMN 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), or upon reception of RRCEarlyDataComplete or RRCConnectionRelease for UP-EDT or RRCConnectionRelease for UP transmission using PUR.	Discard the cell reselection priority information provided by dedicated signalling.
T321	Upon receiving measConfig including a reportConfig with the purpose set to reportCGI	Upon acquiring the information needed to set all fields of cellGlobalId for the requested cell, upon receiving measConfig that includes removal of the reportConfig with the purpose set to reportCGI and upon detecting that a cell is not broadcasting SIB1.	Initiate the measurement reporting procedure, stop performing the related measurements and remove the corresponding measId
T322 NOTE1	Upon receiving redirectedCarrierOffsetDedicated included in RedirectedCarrierInfo	Upon entering RRC_CONNECTED, when PLMN selection is performed on request by NAS, or upon cell (re)selection to another frequency or RAT, or upon reception of RRCEarlyDataComplete or RRCConnectionRelease for UP-EDT or RRCConnectionRelease for UP transmission using PUR.	Release redirectedCarrierOffsetDedicated.
T323	Upon receiving t323.	Upon entering RRC_CONNECTED, when PLMN selection is performed on request by NAS, when the UE enters RRC_IDLE from RRC_INACTIVE, or upon cell (re)selection to another RAT, or upon reception of RRCEarlyDataComplete or RRCConnectionRelease for UP-EDT or RRCConnectionRelease for UP transmission using PUR.	Discard the altFreqPriorities provided by dedicated signalling. UE shall apply the cell reselection priority information broadcast in the system information via cellReselectionPriority and cellReselectionSubPriority.
T325	Timer (re)started upon receiving RRCConnectionReject message with deprioritisationTimer.		Stop deprioritisation of all frequencies or E-UTRA signalled by RRCConnectionReject.
T326 NOTE1	Upon entering RRC_CONNECTED, upon update to NRSRP_Ref.	Upon leaving RRC_CONNECTED.	Stop performing connected mode neighbour cell measurement.
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 5.6.6.4
T331	Upon receiving RRCConnectionRelease message including measIdleConfig.	Upon receiving RRCConnectionSetup, RRCConnectionResume, RRCConnectionRelease with an idle/inactive measurement configuration or indication to release the configuration, if validityArea is configured, upon cell selection/reselection to a cell that does not belong to the validityArea (if configured), or upon reselecting to an inter-RAT cell.	Perform the actions specified in 5.6.20.3.
T340 NOTE2	Upon transmitting UEAssistanceInformation message with powerPrefIndication set to normal	Upon releasing powerPrefIndication during the connection re-establishment procedure	No action.
T341 NOTE2	Upon transmitting UEAssistanceInformation message with bw-Preference.	Upon resuming an RRC connection or upon releasing bw-Preference during the connection re-establishment procedure	No action.
T342 NOTE2	Upon transmitting UEAssistanceInformation message with delayBudgetReport.	Upon releasing delayBudgetReportingConfig during the connection re-establishment and connection resume procedures	No action.
T343 NOTE2	Upon transmitting UEAssistanceInformation message with RLM-Report including earlyOutOfSync.	Upon initiating the connection re-establishment procedure	No action.
T344 NOTE2	Upon transmitting UEAssistanceInformation message with RLM-Report including earlyInSync.	Upon initiating the connection re-establishment procedure	No action.
T345	Upon transmitting UEAssistanceInformation message with overheatingAssistance	Upon releasing overheatingAssistance during the connection re-establishment procedure, or connection resume procedure.	No action.
T346	Upon transmitting UEAssistanceInformation message with scg-DeactivationPreference	Upon releasing scg-DeactivationPreferenceConfig during the RRC connection establishment or re-establishment procedures, or upon reconfiguration of scg-DeactivationPreferenceConfig to release.	No action.
T350	Upon entering RRC_IDLE if t350 has been received in wlan-OffloadInfo.	Upon entering RRC_CONNECTED, or upon cell reselection.	Perform the actions specified in 5.6.12.4.
T351	Reception of RRCConnectionReconfiguration message including the associationTimer in WLAN-MobilityConfig.	Upon successful connection to WLAN, upon WLAN connection failure, upon leaving RRC_CONNECTED, upon triggering the handover procedure, or upon initiating the connection re-establishment procedure.	Perform WLAN Connection Status Reporting specified in 5.6.15.2.
T360	Upon performing the redistribution target selection as specified in TS 36.304 [4].	Upon entering RRC_CONNECTED, upon receiving a Paging message including redistributionIndication; upon reselecting a cell not belonging to the redistribution target.	Stop considering a frequency or cell to be redistribution target, and perform the redistribution target selection if the condition specified in TS 36.304 [4] is met.
T370	Upon receiving SL-DiscConfig including a discSysInfoToReportConfig set to setup.	Upon initiating the transmission of SidelinkUEInformation including discSysInfoReportFreqList, upon receiving SL-DiscConfig including discSysInfoToReportConfig set to release, upon handover and re-establishment.	Release discSysInfoToReportConfig.
T380	Upon reception of periodic-RNAU-timer in RRCConnectionRelease.	Upon reception of RRCConnectionResume, RRCConnectionRelease or RRCConnectionSetup.	Initiate the RAN notification area update procedure
NOTE1: Only the timers marked with "NOTE1" are applicable to NB-IoT. NOTE2: The behaviour as specified in 7.3.2 applies.

7.3.2 Timer handling

When the UE applies zero value for a timer, the timer shall be started and immediately expire unless explicitly stated otherwise.

7.4 Constants

Constant	Usage
N310	Maximum number of consecutive "out-of-sync" or "early-out-of-sync" indications for the PCell received from lower layers
N311	Maximum number of consecutive "in-sync" or "early-in-sync" indications for the PCell received from lower layers
N313	Maximum number of consecutive "out-of-sync" indications for the PSCell received from lower layers
N314	Maximum number of consecutive "in-sync" indications for the PSCell received from lower layers