A UE capable of providing delay budget report in RRC_CONNECTED may initiate the procedure in several cases, including upon being configured to provide delay budget report and upon change of delay budget preference.
A UE capable of providing overheating assistance information in RRC_CONNECTED may initiate the procedure if it was configured to do so, upon detecting internal overheating, or upon detecting that it is no longer experiencing an overheating condition.
A UE capable of providing IDC assistance information in RRC_CONNECTED may initiate the procedure if it was configured to do so, upon detecting IDC problem if the UE did not transmit an IDC assistance information since it was configured to provide IDC indications, or upon change of IDC problem information.
A UE capable of providing its preference on DRX parameters of a cell group for power saving in RRC_CONNECTED may initiate the procedure in several cases, if it was configured to do so, including upon having a preference on DRX parameters and upon change of its preference on DRX parameters.
A UE capable of providing its preference on the maximum aggregated bandwidth of a cell group for power saving in RRC_CONNECTED may initiate the procedure in several cases, if it was configured to do so, including upon having a maximum aggregated bandwidth preference and upon change of its maximum aggregated bandwidth preference.
A UE capable of providing its preference on the maximum number of secondary component carriers of a cell group for power saving in RRC_CONNECTED may initiate the procedure in several cases, if it was configured to do so, including upon having a maximum number of secondary component carriers preference and upon change of its maximum number of secondary component carriers preference.
A UE capable of providing its preference on the maximum number of MIMO layers of a cell group for power saving in RRC_CONNECTED may initiate the procedure in several cases, if it was configured to do so, including upon having a maximum number of MIMO layers preference and upon change of its maximum number of MIMO layers preference.
A UE capable of providing its preference on the minimum scheduling offset for cross-slot scheduling of a cell group for power saving in RRC_CONNECTED may initiate the procedure in several cases, if it was configured to do so, including upon having a minimum scheduling offset preference and upon change of its minimum scheduling offset preference.
A UE capable of providing assistance information to transition out of RRC_CONNECTED state may initiate the procedure if it was configured to do so, upon determining that it prefers to transition out of RRC_CONNECTED state, or upon change of its preferred RRC state.
A UE capable of providing configured grant assistance information for NR sidelink communication in RRC_CONNECTED may initiate the procedure in several cases, including upon being configured to provide traffic pattern information and upon change of traffic patterns.
A UE capable of providing an indication of its preference in being provisioned with reference time information may initiate the procedure upon being configured to provide this indication, or if it was configured to provide this indication and upon change of its preference.
A UE capable of providing an indication of its preference in FR2 UL gap may initiate the procedure if it was configured to do so, upon detecting the need of FR2 UL gap activation/deactivation.
A UE capable of providing MUSIM assistance information for gap preference may initiate the procedure if it was configured to do so, upon determining it needs the gaps, or upon change of the gap preference information.
A UE capable of providing MUSIM assistance information for leave indication may initiate the procedure if it was configured to do so upon determining that it needs to leave RRC_CONNECTED state.
A UE capable of relaxing its RLM measurements of a cell group in RRC_CONNECTED state shall initiate the procedure for providing an indication of its relaxation state for RLM measurements upon being configured to do so, and upon change of its relaxation state for RLM measurements in RRC_CONNECTED state.
A UE capable of relaxing its BFD measurements in serving cells of a cell group in RRC_CONNECTED shall initiate the procedure for providing an indication of its relaxation state for BFD measurements upon being configured to do so, and upon change of its relaxation state for BFD measurements in RRC_CONNECTED state.
A UE capable of SDT initiates this procedure when data and/or signalling mapped to radio bearers that are not configured for SDT becomes available during SDT (i.e. while SDT procedure is ongoing).
A UE capable of providing its preference for SCG deactivation may initiate the procedure if it was configured to do so, upon determining that it prefers or does no more prefer the SCG to be deactivated.
A UE that has uplink data to transmit for a DRB for which there is no MCG RLC bearer while the SCG is deactivated shall initiate the procedure.
A UE capable of providing an indication of fulfilment of the RRM measurement relaxation criterion in connected mode may initiate the procedure if it was configured to do so, upon change of its fulfilment status for RRM measurement relaxation criterion for connected mode.
A UE capable of providing service link propagation delay difference between serving cell and neighbour cell(s) shall initiate the procedure upon being configured to do so, and upon determining that service link propagation delay difference between serving cell and a neighbour cell has changed more than threshPropDelayDiff compared with the last reported value.
Upon initiating the procedure, the UE shall:
if the current delay budget is different from the one indicated in the last transmission of the UEAssistanceInformation message including delayBudgetReport and timer T342 is not running:
if the current overheating assistance information is different from the one indicated in the last transmission of the UEAssistanceInformation message including overheatingAssistance and timer T345 is not running:
if on one or more supported UL CA combination comprising of carrier frequencies included in candidateServingFreqListNR, the UE is experiencing IDC problems that it cannot solve by itself:
if the UE has a preference on DRX parameters of the cell group and the UE did not transmit a UEAssistanceInformation message with drx-Preference for the cell group since it was configured to provide its preference on DRX parameters of the cell group for power saving; or
if the current drx-Preference information for the cell group is different from the one indicated in the last transmission of the UEAssistanceInformation message including drx-Preference for the cell group and timer T346a associated with the cell group is not running:
if the UE has a preference on the maximum aggregated bandwidth of the cell group and the UE did not transmit a UEAssistanceInformation message with maxBW-Preference and/or maxBW-PreferenceFR2-2 for the cell group since it was configured to provide its preference on the maximum aggregated bandwidth of the cell group for power saving; or
if the current maxBW-Preference information for the cell group is different from the one indicated in the last transmission of the UEAssistanceInformation message including maxBW-Preference and/or maxBW-PreferenceFR2-2for the cell group and timer T346b associated with the cell group is not running:
initiate transmission of the UEAssistanceInformation message in accordance with clause 5.7.4.3 to provide the current maxBW-Preference and/or maxBW-PreferenceFR2-2;
if the UE has a preference on the maximum number of secondary component carriers of the cell group and the UE did not transmit a UEAssistanceInformation message with maxCC-Preference for the cell group since it was configured to provide its preference on the maximum number of secondary component carriers of the cell group for power saving; or
if the current maxCC-Preference information for the cell group is different from the one indicated in the last transmission of the UEAssistanceInformation message including maxCC-Preference for the cell group and timer T346c associated with the cell group is not running:
if the UE has a preference on the maximum number of MIMO layers of the cell group and the UE did not transmit a UEAssistanceInformation message with maxMIMO-LayerPreference and/or maxMIMO-LayerPreferenceFR2-2 for the cell group since it was configured to provide its preference on the maximum number of MIMO layers of the cell group for power saving; or
if the current maxMIMO-LayerPreference information for the cell group is different from the one indicated in the last transmission of the UEAssistanceInformation message including maxMIMO-LayerPreference and/or maxMIMO-LayerPreferenceFR2-2 for the cell group and timer T346d associated with the cell group is not running:
initiate transmission of the UEAssistanceInformation message in accordance with clause 5.7.4.3 to provide the current maxMIMO-LayerPreference and/or maxMIMO-LayerPreferenceFR2-2;
if the UE has a preference on the minimum scheduling offset for cross-slot scheduling of the cell group and the UE did not transmit a UEAssistanceInformation message with minSchedulingOffsetPreference and/or minSchedulingOffsetPreferenceExt for the cell group since it was configured to provide its preference on the minimum scheduling offset for cross-slot scheduling of the cell group for power saving; or
if the current minSchedulingOffsetPreference and/or minSchedulingOffsetPreferenceExt information for the cell group is different from the one indicated in the last transmission of the UEAssistanceInformation message including minSchedulingOffsetPreference and/or minSchedulingOffsetPreferenceExt for the cell group and timer T346e associated with the cell group is not running:
initiate transmission of the UEAssistanceInformation message in accordance with clause 5.7.4.3 to provide the current minSchedulingOffsetPreference and/or minSchedulingOffsetPreferenceExt;
if the UE is configured with connectedReporting and the UE determines that it would prefer to revert an earlier indication to transition out of RRC_CONNECTED state:
initiate transmission of the UEAssistanceInformation message in accordance with clause 5.7.4.3 to provide configured grant assistance information for NR sidelink communication;
if the UE's preference changed from the last time UE initiated transmission of the UEAssistanceInformation message including referenceTimeInfoPreference:
initiate transmission of the UEAssistanceInformation message in accordance with clause 5.7.4.3 to provide preference in being provisioned with reference time information.
if the UE did not transmit a UEAssistanceInformation message with ul-GapFR2-Preference since it was configured to provide its preference on FR2 UL gap information:
initiate transmission of the UEAssistanceInformation message in accordance with clause 5.7.4.3 to provide MUSIM assistance information for leaving RRC_CONNECTED;
if the UE has a preference on the MUSIM gap(s) and the UE did not transmit a UEAssistanceInformation message with musim-GapPreferenceList since it was configured to provide MUSIM assistance information for gap preference; or
if the current musim-GapPreferenceList is different from the one indicated in the last transmission of the UEAssistanceInformation message including musim-GapPreferenceList and the timer T346h is not running:
if the UE did not transmit a UEAssistanceInformation message with rlm-MeasRelaxationState since it was configured to provide the relaxation state of RLM measurements for the cell group; or
if the relaxation state of RLM measurements for the cell group is currently different from the relaxation state reported in the last transmission of the UEAssistanceInformation message including rlm-MeasRelaxationState of the cell group and timer T346j associated with the cell group is not running:
initiate transmission of the UEAssistanceInformation message in accordance with clause 5.7.4.3 to provide the relaxation state of RLM measurements of the cell group;
if configured to provide the relaxation state of BFD measurements of serving cells of a cell group and BFD measurement of the cell group is not stopped:
if the UE did not transmit a UEAssistanceInformation message with bfd-MeasRelaxationState since it was configured to provide the relaxation state of BFD measurements for the cell group; or
if the relaxation state of BFD measurements in any serving cell of the cell group is currently different from the relaxation state reported in the last transmission of the UEAssistanceInformation message including bfd-MeasRelaxationState of the cell group and timer T346k associated with the cell group is not running:
initiate transmission of the UEAssistanceInformation message in accordance with clause 5.7.4.3 to provide the relaxation state of BFD measurements of serving cells of the cell group.
if the UE prefers the SCG to be deactivated and did not transmit a UEAssistanceInformation message with scg-DeactivationPreference since it was configured to provide its SCG deactivation preference; or
initiate transmission of the UEAssistanceInformation message in accordance with clause 5.7.4.3 to indicate that the UE has uplink data to send for a DRB whose DRB-Identity is not included in any RLC-BearerConfig in the CellGroupConfig associated with the MCG.
if the UE did not transmit a UEAssistanceInformation message with rrm-MeasRelaxationFulfilment as true since it was configured to provide indications of RRM measurement relaxation criterion fulfilment; or
initiate transmission of the UEAssistanceInformation message in accordance with clause 5.7.4.3 to indicate that the criterion for RRM measurement relaxation for connected mode is fulfilled;
initiate transmission of the UEAssistanceInformation message in accordance with clause 5.7.4.3 to indicate that the criterion for RRM measurement relaxation for connected mode is not fulfilled.
if the UE did not transmit a UEAssistanceInformation message with propagationDelayDifference since it was configured to provide service link propagation delay difference between serving cell and neighbour cell(s); or
for any neighbour cell in neighCellInfoList, if the service link propagation delay difference between serving cell and the neighbour cell has changed more than threshPropDelayDiff since the last transmission of the UEAssistanceInformation message including propagationDelayDifference:
initiate transmission of the UEAssistanceInformation message in accordance with clause 5.7.4.3 to provide service link propagation delay difference between serving cell and each neighbour cell included in the neighCellInfoList;
if transmission of the UEAssistanceInformation message is initiated to provide overheating assistance information according to clause 5.7.4.2 or 5.3.5.3;
set reducedMIMO-LayersFR1-DL to the number of maximum MIMO layers of each serving cell operating on FR1 the UE prefers to be temporarily configured in downlink;
set reducedMIMO-LayersFR1-UL to the number of maximum MIMO layers of each serving cell operating on FR1 the UE prefers to be temporarily configured in uplink;
set reducedMIMO-LayersFR2-DL to the number of maximum MIMO layers of each serving cell operating on FR2-1 the UE prefers to be temporarily configured in downlink;
set reducedMIMO-LayersFR2-UL to the number of maximum MIMO layers of each serving cell operating on FR2-1 the UE prefers to be temporarily configured in uplink;
set reducedMIMO-LayersFR2-2-DL to the number of maximum MIMO layers of each serving cell operating on FR2 the UE prefers to be temporarily configured in downlink;
set reducedMIMO-LayersFR2-2-UL to the number of maximum MIMO layers of each serving cell operating on FR2 the UE prefers to be temporarily configured in uplink;
do not include reducedMaxCCs, reducedMaxBW-FR1, reducedMaxBW-FR2, reducedMaxBW-FR2-2, reducedMaxMIMO-LayersFR1, reducedMaxMIMO-LayersFR2 or reducedMaxMIMO-LayersFR2-2 in OverheatingAssistance IE;
if there is at least one supported UL CA combination comprising of carrier frequencies included in candidateServingFreqListNR, the UE is experiencing IDC problems that it cannot solve by itself:
include affectedCarrierFreqCombList with an entry for each supported UL CA combination comprising of carrier frequencies included in candidateServingFreqListNR, that is affected by IDC problems;
optionally include affectedCarrierFreqCombList with an entry for each supported UL CA combination comprising of carrier frequencies included in candidateServingFreqListNR, that is affected by IDC problems;
if transmission of the UEAssistanceInformation message is initiated to provide drx-Preference of a cell group for power saving according to clause 5.7.4.2 or 5.3.5.3:
do not include preferredDRX-LongCycle, preferredDRX-InactivityTimer, preferredDRX-ShortCycle and preferredDRX-ShortCycleTimer in the DRX-Preference IE;
if transmission of the UEAssistanceInformation message is initiated to provide maxBW-Preference of a cell group for power saving according to clause 5.7.4.2 or 5.3.5.3:
if transmission of the UEAssistanceInformation message is initiated to provide maxBW-PreferenceFR2-2 of a cell group for power saving according to clause 5.7.4.2 or 5.3.5.3:
if transmission of the UEAssistanceInformation message is initiated to provide maxCC-Preference of a cell group for power saving according to clause 5.7.4.2 or 5.3.5.3:
if transmission of the UEAssistanceInformation message is initiated to provide maxMIMO-LayerPreference of a cell group for power saving according to clause 5.7.4.2 or 5.3.5.3:
set reducedMIMO-LayersFR1-DL to the preferred maximum number of downlink MIMO layers of each BWP of each FR1 serving cell that the UE operates on in the cell group;
set reducedMIMO-LayersFR2-DL to the preferred maximum number of downlink MIMO layers of each BWP of each FR2-1 serving cell that the UE operates on in the cell group;
set reducedMIMO-LayersFR2-UL to the preferred maximum number of uplink MIMO layers of each FR2-1 serving cell that the UE operates on in the cell group;
if transmission of the UEAssistanceInformation message is initiated to provide maxMIMO LayerPreferenceFR2 2 of a cell group for power saving according to clause 5.7.4.2 or 5.3.5.3:
set reducedMIMO-LayersFR2-2-DL to the preferred maximum number of downlink MIMO layers of each BWP of each FR2-2 serving cell that the UE operates on in the cell group;
set reducedMIMO-LayersFR2-2-UL to the preferred maximum number of uplink MIMO layers of each FR2-2 serving cell that the UE operates on in the cell group;
if transmission of the UEAssistanceInformation message is initiated to provide minSchedulingOffsetPreference of a cell group for power saving according to clause 5.7.4.2 or 5.3.5.3:
if transmission of the UEAssistanceInformation message is initiated to provide minSchedulingOffsetPreferenceExt of a cell group for power saving according to clause 5.7.4.2 or 5.3.5.3:
if transmission of the UEAssistanceInformation message is initiated to provide an indication of preference in being provisioned with reference time information according to clause 5.7.4.2 or 5.3.5.3:
set musim-GapLength and musim-GapRepetitionAndOffset in the musim-GapInfo IE to the values of the length and the repetition/offset of the gap(s), respectively, the UE prefers to be configured with;
optionally include musim-Starting-SFN-AndSubframe in the musim-GapInfo IE and set it to the starting SFN/subframe of the gap the UE prefers to be configured with;
if transmission of the UEAssistanceInformation message is initiated to provide the relaxation state of RLM measurements of a cell group according to clause 5.7.4.2:
if transmission of the UEAssistanceInformation message is initiated to indicate availability of data mapped to radio bearers not configured for SDT according to clause 5.7.4.2:
if transmission of the UEAssistanceInformation message is initiated to provide an indication of preference for SCG deactivation according to clause 5.7.4.2:
if transmission of the UEAssistanceInformation message is initiated to provide an indication that the UE has uplink data related to a deactivated SCG according to clause 5.7.4.2:
if transmission of the UEAssistanceInformation message is initiated to provide an indication about whether the criterion for RRM relaxation for connected mode is fulfilled or not fulfilled:
if transmission of the UEAssistanceInformation message is initiated to provide the service link propagation delay difference between serving cell and neighbour cell(s) according to clause 5.7.4.2;
if the procedure was triggered to provide configured grant assistance information for NR sidelink communication by an NR RRCReconfiguration message that was embedded within an E-UTRA RRCConnectionReconfiguration:
submit the UEAssistanceInformation to lower layers via SRB1, embedded in E-UTRA RRC message ULInformationTransferIRAT as specified in clause 5.6.28 of TS 36.331;
else if the procedure was triggered to provide UE preference for SCG deactivation or to indicate that the UE with a deactivate SCG has uplink data to send on a DRB for which there is no MCG RLC bearer:
The UE shall set the contents of OverheatingAssistance IE if initiated to provide overheating assistance indication for SCG in (NG)EN-DC according to clause 5.6.10.3 of TS 36.331:
set reducedBW-FR2-2-DL to the maximum aggregated bandwidth the UE prefers to be temporarily configured across all downlink carriers of FR2-2 of the SCG;
set reducedMIMO-LayersFR1-DL to the number of maximum MIMO layers of each serving cell operating on FR1 of the SCG the UE prefers to be temporarily configured in downlink;
set reducedMIMO-LayersFR1-UL to the number of maximum MIMO layers of each serving cell operating on FR1 of the SCG the UE prefers to be temporarily configured in uplink;
set reducedMIMO-LayersFR2-DL to the number of maximum MIMO layers of each serving cell operating on FR2-1 of the SCG the UE prefers to be temporarily configured in downlink;
set reducedMIMO-LayersFR2-UL to the number of maximum MIMO layers of each serving cell operating on FR2-1 of the SCG the UE prefers to be temporarily configured in uplink;
set reducedMIMO-LayersFR2-2-DL to the number of maximum MIMO layers of each serving cell operating on FR2-2 of the SCG the UE prefers to be temporarily configured in downlink;
set reducedMIMO-LayersFR2-2-UL to the number of maximum MIMO layers of each serving cell operating on FR2-2 of the SCG the UE prefers to be temporarily configured in uplink;
SS-RSRP = current L3 RSRP measurement of the PCell based on SSB (dB).
SS-RSRPRefStationaryConnected = reference SS-RSRP value of the PCell (dB), set as follows:
at the end of RRC reconfiguration procedure as specified in clause 5.3.5.3, when rrm-MeasRelaxationReportingConfig is included in the RRCReconfiguration message; or
after MAC successfully completes a Random Access procedure after applying a reconfigurationWithSync in spCellConfig while stationary criterion is configured; or
if (SS-RSRP - SS-RSRPRefStationaryConnected) > 0; or
if the relaxed measurement criterion has not been met for TSearchDeltaP-StationaryConnected:
UE shall set the value of SS-RSRPRefStationaryConnected to the current SS-RSRP value of the serving cell.
A UE initiates the procedure when there is a need inform the network about a failure detected by the UE. In particular, the UE initiates the procedure when the following condition is met:
The network initiates the DL Dedicated Message Segment transfer procedure whenever the encoded RRC message PDU exceeds the maximum PDCP SDU size. The network initiates the DL Dedicated Message Segment transfer procedure by sending the DLDedicatedMessageSegment message.
assemble the message from the received segments and process the message according to clause 5.3.5.3 for the RRCReconfiguration message or clause 5.3.13.4 for the RRCResume message;
The UE shall segment the encoded RRC PDU based on the maximum supported size of a PDCP SDU specified in TS 38.323. UE shall minimize the number of segments and set the contents of the ULDedicatedMessageSegment messages as follows:
F or each new UL DCCH message, set the segmentNumber to 0 for the first message segment and increment the segmentNumber for each subsequent RRC message segment;
submit all the ULDedicatedMessageSegment messages generated for the segmented RRC message to lower layers for transmission in ascending order based on the segmentNumber, upon which the procedure ends.