specviewer.org TS 38.331 ASN.1 index UEAssistanceInformation

UEAssistanceInformation

RRC message · TS 38.331 v19.4.0 (2026-09) · clause 6.2.2

UEAssistanceInformation is an RRC message of 3GPP TS 38.331 (38331), the 5G NR Radio Resource Control (RRC) protocol.

First seen v15.3.0 (2018-09) · Last changed v19.1.0 (2026-01), in UEAssistanceInformation-v1900-IEs

Definition

The UEAssistanceInformation message is used for the indication of UE assistance information to the network.

UEAssistanceInformation ::=         SEQUENCE {
    criticalExtensions                  CHOICE {
        ueAssistanceInformation             UEAssistanceInformation-IEs,
        criticalExtensionsFuture            SEQUENCE {}
    }
}

Fields (3)

FieldDescription
criticalExtensions
CHOICE {
ueAssistanceInformation
UEAssistanceInformation-IEs
criticalExtensionsFuture
SEQUENCE {}

Fields of UEAssistanceInformation-IEs (3)

FieldDescription
delayBudgetReport
DelayBudgetReport · OPTIONAL
Indicates the UE-preferred adjustment to connected mode DRX.
lateNonCriticalExtension
OCTET STRING · OPTIONAL
nonCriticalExtension
UEAssistanceInformation-v1540-IEs · OPTIONAL

Fields of UEAssistanceInformation-v1540-IEs (2)

FieldDescription
overheatingAssistance
OverheatingAssistance · OPTIONAL
since v15.4.0
nonCriticalExtension
UEAssistanceInformation-v1610-IEs · OPTIONAL
since v15.4.0

Fields of UEAssistanceInformation-v1610-IEs (10)

FieldDescription
idc-Assistance-r16
IDC-Assistance-r16 · OPTIONAL
since v16.1.0
drx-Preference-r16
DRX-Preference-r16 · OPTIONAL
since v16.1.0
maxBW-Preference-r16
MaxBW-Preference-r16 · OPTIONAL
since v16.1.0
maxCC-Preference-r16
MaxCC-Preference-r16 · OPTIONAL
since v16.1.0
maxMIMO-LayerPreference-r16
MaxMIMO-LayerPreference-r16 · OPTIONAL
since v16.1.0
minSchedulingOffsetPreference-r16
MinSchedulingOffsetPreference-r16 · OPTIONAL
since v16.1.0
Indicates the UE's preferences on minimumSchedulingOffset of cross-slot scheduling for power saving.
releasePreference-r16
ReleasePreference-r16 · OPTIONAL
since v16.1.0
sl-UE-AssistanceInformationNR-r16
SL-UE-AssistanceInformationNR-r16 · OPTIONAL
since v16.1.0
Indicates the traffic characteristic of sidelink logical channel(s), specified in the IE SL-TrafficPatternInfo, that are setup for NR sidelink communication.
referenceTimeInfoPreference-r16
BOOLEAN · OPTIONAL
since v16.1.0
Indicates whether the UE prefers being provisioned with the timing information specified in the IE ReferenceTimeInfo .
nonCriticalExtension
UEAssistanceInformation-v1700-IEs · OPTIONAL
since v16.1.0

Fields of UEAssistanceInformation-v1700-IEs (15)

FieldDescription
ul-GapFR2-Preference-r17
UL-GapFR2-Preference-r17 · OPTIONAL
since v17.0.0
musim-Assistance-r17
MUSIM-Assistance-r17 · OPTIONAL
since v17.0.0
overheatingAssistance-r17
OverheatingAssistance-r17 · OPTIONAL
since v17.0.0
maxBW-PreferenceFR2-2-r17
MaxBW-PreferenceFR2-2-r17 · OPTIONAL
since v17.0.0
maxMIMO-LayerPreferenceFR2-2-r17
MaxMIMO-LayerPreferenceFR2-2-r17 · OPTIONAL
since v17.0.0
minSchedulingOffsetPreferenceExt-r17
MinSchedulingOffsetPreferenceExt-r17 · OPTIONAL
since v17.0.0
Indicates the UE's preferences on minimumSchedulingOffset of cross-slot scheduling for power saving for SCS 480 kHz and/or 960 kHz.
rlm-MeasRelaxationState-r17
BOOLEAN · OPTIONAL
since v17.0.0
Indicates the relaxation state of RLM measurements. Value true indicates that the UE is performing relaxation of RLM measurements, and value false indicates that the UE is not performing relaxation of RLM measurements.
bfd-MeasRelaxationState-r17
BIT STRING (SIZE (1..maxNrofServingCells)) · OPTIONAL
since v17.0.0
Indicates the relaxation state of BFD measurements. Each bit corresponds to a serving cell of the cell group. A serving cell is mapped to the ( servCellIndex +1)-th bit, starting from MSB. A bit that is set to 1 indicates that the UE is performing BFD measurements relaxation on the serving cell mapped on the bit. A bit that is set to 0 indicates that the UE is not performing BFD measurements relaxation on the serving cell mapped on the bit. If a serving cell is not configured to the UE, the corresponding bit is set to 0.
nonSDT-DataIndication-r17
SEQUENCE { · OPTIONAL
since v17.0.0
Informs the network about the arrival of data and/or signaling mapped to radio bearers not configured for SDT while SDT procedure is ongoing.
resumeCause-r17
ResumeCause · OPTIONAL
since v17.0.0
Provides the resume cause based on the information received from the upper layers.
scg-DeactivationPreference-r17
ENUMERATED { scg-DeactivationPreferred, noPreference } · OPTIONAL
since v17.3.0
uplinkData-r17
ENUMERATED { true } · OPTIONAL
since v17.0.0
rrm-MeasRelaxationFulfilment-r17
BOOLEAN · OPTIONAL
since v17.0.0
Indicates whether the UE fulfils the relaxed measurement criterion for stationary UE in 5.7.4.4. Value true indicates that the UE fulfils the criterion, and value false indicates that the UE does not fulfil the criterion.
propagationDelayDifference-r17
PropagationDelayDifference-r17 · OPTIONAL
since v17.1.0
Indicates the one-way service link propagation delay difference between serving cell and each neighbour cell included in neighCellInfoList, defined as neighbour cell's service link propagation delay minus serving cell's service link propagation delay, in number of ms. First entry in propagationDelayDifference corresponds to first entry in neighCellInfoList , second entry in propagationDelayDifference corresponds to second entry in neighCellInfoList , and so on.
nonCriticalExtension
UEAssistanceInformation-v1800-IEs · OPTIONAL
since v17.0.0

Fields of UEAssistanceInformation-v1800-IEs (9)

FieldDescription
idc-FDM-Assistance-r18
IDC-FDM-Assistance-r18 · OPTIONAL
since v18.0.0
idc-TDM-Assistance-r18
IDC-TDM-Assistance-r18 · OPTIONAL
since v18.0.0
multiRx-PreferenceFR2-r18
ENUMERATED {single, multiple } · OPTIONAL
since v18.0.0
Indicates the UE's preference on single FR2 Rx operation to address overheating or power saving. This field is allowed to be reported only when UE is configured with serving cells operating on FR2.
musim-Assistance-v1800
MUSIM-Assistance-v1800 · OPTIONAL
since v18.0.0
flightPathInfoAvailable-r18
ENUMERATED {true} · OPTIONAL
since v18.0.0
ul-TrafficInfo-r18
UL-TrafficInfo-r18 · OPTIONAL
since v18.0.0
n3c-RelayUE-InfoList-r18
SEQUENCE (SIZE (0..8)) OF N3C-RelayUE-Info-r18 · OPTIONAL
since v18.0.0
Information of available N3C relay UE(s).
sl-PRS-UE-AssistanceInformationNR-r18
SL-PRS-UE-AssistanceInformationNR-r18 · OPTIONAL
since v18.0.0
nonCriticalExtension
UEAssistanceInformation-v1900-IEs · OPTIONAL
since v18.0.0

Fields of UEAssistanceInformation-v1900-IEs (8)

FieldDescription
gapOccasionCancelRatio-r19
GapOccasionCancelRatio-r19 · OPTIONAL
since v19.0.0
lpwus-OffsetPreference-r19
LPWUS-OffsetPreference-r19 · OPTIONAL
since v19.0.0
applicabilityReportList-r19
ApplicabilityReportList-r19 · OPTIONAL
since v19.0.0
The applicability reports related to prediction configurations and/or related to sets of parameters for prediction configurations.
dataCollectionPreference-r19
DataCollectionPreference-r19 · OPTIONAL
since v19.0.0
loggedDataCollectionAssistance-r19
LoggedDataCollectionAssistance-r19 · OPTIONAL
since v19.0.0
Indicates assistance information related to the logging of measurements for network-side data collection performed in accordance with CSI-LoggedMeasurementConfig.
assisted-SSB-MTC-MG-Report-r19
BIT STRING (SIZE (7)) · OPTIONAL
since v19.1.0
This field indicates the reference locations that are closest to the UE for assisted SMTC and measurement gap configuration in RRC_CONNECTED state. The UE sets the bit at a given position to '1' if the reference location at the corresponding position in the refLocList is one of the closest locations, and to '0' otherwise. The first bit in the string corresponds to the first reference location in the list, and so on.
fbs-Preference-r19
ENUMERATED {preferred, notPreferred } · OPTIONAL
since v19.1.0
Indicates the UE's preference on L3 fast beam sweeping operation.
nonCriticalExtension
SEQUENCE {} · OPTIONAL
since v19.0.0

Used by (4)

Uses (1)

In the viewer