7 Variables and constants

36.3313GPPEvolved Universal Terrestrial Radio Access (E-UTRA)Protocol specificationRadio Resource Control (RRC)Release 15TS

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,

ConnEstFailReport-r11,

EUTRA-CarrierList-r15,

SpeedStateScaleFactors,

C-RNTI,

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,

MeasResultListIdle-r15,

MeasScaleFactor-r12,

MobilityStateParameters,

NeighCellConfig,

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,

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

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

}

— 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 for E-UTRA inter-frequency measurements. The UE performs logging of these measurements only while in RRC_IDLE.

VarMeasIdleConfig UE variable

— ASN1START

VarMeasIdleConfig-r15 ::= SEQUENCE {

measIdleCarrierListEUTRA-r15 EUTRA-CarrierList-r15 OPTIONAL,

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

sec180, sec240, sec300}

}

— ASN1STOP

VarMeasIdleReport

The UE variable VarMeasIdleReport includes the logged measurements information.

VarMeasIdleReport UE variable

— ASN1START

VarMeasIdleReport-r15 ::= SEQUENCE {

measReportIdle-r15 MeasResultListIdle-r15

}

— 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

VarShortINACTIVEMAC-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.

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.

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’

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-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.

– 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

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.

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

VarShortMAC-Input,

VarShortResumeMAC-Input-r13

FROM EUTRA-UE-Variables;

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

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 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

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

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.

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

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

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

Inform upper layers about barring alleviation for ACDC as specified in 5.3.3.7

T309

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 and upon initiating the connection re-establishment 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 optimisation: go to RRC_IDLE else: initiate the connection re-establishment procedure

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, 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, and upon the expiry of T310

If security is not activated: go to RRC_IDLE else: initiate the connection re-establishment procedure

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.

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

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

Release redirectedCarrierOffsetDedicated.

T325

Timer (re)started upon receiving RRCConnectionReject message with deprioritisationTimer.

Stop deprioritisation of all frequencies or E-UTRA signalled by RRCConnectionReject.

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 or, if validityArea is configured, upon reselecting to cell that does not belong to validityArea.

Release the stored VarMeasIdleConfig.

T340

NOTE2

Upon transmitting UEAssistanceInformation message with powerPrefIndication set to normal

Upon initiating the connection re-establishment procedure

No action.

T341

NOTE2

Upon transmitting UEAssistanceInformation message with bw-Preference.

Upon resuming an RRC connection or upon initiating the connection re-establishment procedure

No action.

T342

NOTE2

Upon transmitting UEAssistanceInformation message with delayBudgetReport.

Upon initiating the connection re-establishment and connection resume procedures

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.

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.

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 initiating the connection re-establishment or connection resume procedure

No action.

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