UEB

The field is optionally present, need ON, for UE based NR DL-TDOA; otherwise it is not present.

nr-DL-PRS-AssistanceData

This field specifies the assistance data reference and neighbour TRPs and provides the DL-PRS configuration for the TRPs.

Note, if this field is absent but the nr-SelectedDL-PRS-IndexList field is present, the nr-DL-PRS-AssistanceData may be provided in IE NR-Multi-RTT-ProvideAssistanceData or NR-DL-AoD-ProvideAssistanceData.

nr-SelectedDL-PRS-IndexList

This field specifies the DL-PRS Resources which are applicable for this NR-DL-TDOA-ProvideAssistanceData message.

nr-PositionCalculationAssistance

This field provides position calculation assistance data for UE-based mode.

nr-DL-TDOA-Error

This field provides DL-TDOA error reasons.

nr-On-Demand-DL-PRS-Configurations

This field provides a set of available DL-PRS configurations which can be requested by the target device on-demand.

NOTE 1: Void

NOTE 2: If this field is absent but the nr-On-Demand-DL-PRS-Configurations-Selected-IndexList is present, the nr-On-Demand-DL-PRS-Configurations may be provided in IE NR-Multi-RTT-ProvideAssistanceData or NR-DL-AoD-ProvideAssistanceData.

nr-On-Demand-DL-PRS-Configurations-Selected-IndexList

This field specifies the selected available on-demand DL-PRS configurations which are applicable for this NR-DL-TDOA-ProvideAssistanceData message.

assistanceDataValidityArea

This field specifies the network area for which this NR-DL-TDOA-ProvideAssistanceData is valid.

nr-PhysCellID

This field specifies the NR physical cell identity of the current primary cell of the target device.

nr-AdType

This field indicates the requested assistance data. dl-prs means requested assistance data is nr-DL-PRS-AssistanceData, posCalc means requested assistance data is nr-PositionCalculationAssistance for UE based positioning.

nr-PosCalcAssistanceRequest

This field indicates the Position Calculation Assistance Data requested. This is represented by a bit string, with a one‑value at the bit position means the particular assistance data is requested; a zero‑value means not requested.

– bit 0 indicates whether the field nr-TRP-LocationInfo in IE NR-PositionCalculationAssistance is requested or not;

– bit 1 indicates whether the field nr-DL-PRS-BeamInfo in IE NR-PositionCalculationAssistance is requested or not;

– bit 2 indicates whether the field nr-RTD-Info in IE NR-PositionCalculationAssistance is requested or not;

– bit 3 indicates whether the field nr-DL-PRS-Expected-LOS-NLOS-Assistance in IE NR-PositionCalculationAssistance is requested or not;

– bit 4 indicates whether the field nr-DL-PRS-TRP-TEG-Info in IE NR-PositionCalculationAssistance is requested or not.

This field may only be present if the ‘posCalc‘ bit in nr-AdType is set to value ‘1’.

nr-on-demand-DL-PRS-Request

This field indicates the on-demand DL-PRS requested for DL-TDOA. This field may be included when the dl-prs bit in nr-AdType is set to value ‘1’.

nr-DL-PRS-ExpectedAoD-or-AoA-Request

This field, if present, indicates that the IE NR-DL-PRS-ExpectedAoD-or-AoA in NR-DL-PRS-AssistanceData is requested. Enumerated value ‘eAoD‘ indicates that expected AoD information is requested; value ‘eAoA‘ indicates that expected AoA information is requested.

This field may only be present if the ‘dl-prs‘ bit in nr-AdType is set to value ‘1’.

pre-configured-AssistanceDataRequest

This field, if present, indicates that the target device requests pre-configured assistance data with area validity.

batchUEA

The field is optionally present if the field nr-DL-TDOA-SignalMeasurementInformation is absent; otherwise it is not present.

batchUEB

The field is optionally present if the field nr-dl-tdoa-LocationInformation is absent; otherwise it is not present.

UERxTEG

The field is optionally present, need OP, if the field nr-UE-Rx-TEG-ID is present; otherwise it is not present.

nr-UE-RxTEG-TimingErrorMargin

This field specifies the UE Rx TEG timing error margin value for all the UE Rx TEGs within one NR-DL-TDOA-SignalMeasurementInformation. If the nr-UE-Rx-TEG-ID is present and this field is absent, the receiver should consider the UE Rx TEG timing error margin value to be the maximum applicable value as defined in TS 38.133 [46].

dl-PRS-ID

This field is used along with a DL-PRS Resource Set ID and a DL-PRS Resources ID to uniquely identify a DL-PRS Resource. This ID can be associated with multiple DL-PRS Resource Sets associated with a single TRP.

Each TRP should only be associated with one such ID.

nr-PhysCellID

This field specifies the physical cell identity of the associated TRP, as defined in TS 38.331 [35].

nr-CellGlobalID

This field specifies the NCGI, the globally unique identity of a cell in NR, of the associated TRP, as defined in TS 38.331 [35].

nr-ARFCN

This field specifies the NR-ARFCN of the TRP’s CD-SSB (as defined in TS 38.300 [47]) corresponding to nr-PhysCellID.

nr-TimeStamp

This field specifies the time instance at which the TOA and DL PRS-RSRP/RSRPP (if included) measurement is performed. The nr-SFN and nr-Slot in IE NR-TimeStamp correspond to the TRP provided in dl-PRS-ReferenceInfo as specified in TS 38.214 [45]. Note, the TOA measurement refers to the TOA of this neighbour TRP or the reference TRP, as applicable, used to determine the nr-RSTD or nr-RSTD-ResultDiff.

nr-RSTD

This field specifies the relative timing difference between this neighbour TRP and the PRS reference TRP, as defined in TS 38.215 [36]. Mapping of the measured quantity is defined as in TS 38.133 [46].

nr-AdditionalPathList

This field specifies one or more additional detected path timing values for the TRP or resource, relative to the path timing used for determining the nr-RSTD value. If this field was requested but is not included, it means the UE did not detect any additional path timing values. If this field is present, the field nr-AdditionalPathListExt shall be absent.

nr-TimingQuality

This field specifies the target device′s best estimate of the quality of the TOA measurement. Note, the TOA measurement refers to the TOA of this neighbour TRP or the reference TRP, as applicable, used to determine the nr-RSTD or nr-RSTD-ResultDiff.

nr-DL-PRS-RSRP-Result

This field specifies the NR DL-PRS reference signal received power (DL PRS-RSRP) measurement, as defined in TS 38.215 [36]. The mapping of the quantity is defined as in TS 38.133 [46].

nr-UE-Rx-TEG-ID

This field provides the ID of the UE Rx TEG associated with the TOA measurement. Note, the TOA measurement refers to the TOA of this neighbour TRP or the reference TRP, as applicable, used to determine the nr-RSTD or nr-RSTD-ResultDiff. When different UE Rx TEGs for RSTD measurements are requested, the maximum number of reported RSTD measurements associated with different DL-PRS Resources per UE Rx TEG per target TRP is 4.

nr-DL-PRS-FirstPathRSRP-Result

This field specifies the NR DL-PRS reference signal received path power (DL PRS-RSRPP) of the first detected path in time, as defined in TS 38.215 [36]. The mapping of the measured quantity is defined as in TS 38.133 [46].

nr-los-nlos-Indicator

This field specifies the target device’s best estimate of the LOS or NLOS of the TOA measurement for the TRP or resource. Note, the TOA measurement refers to the TOA of this neighbour TRP or the reference TRP, as applicable, used to determine the nr-RSTD or nr-RSTD-ResultDiff.

NOTE: If the requested type or granularity in nr-los-nlos-IndicatorRequest is not possible, the target device may provide a different type and granularity for the estimated LOS-NLOS-Indicator.

nr-AdditionalPathListExt

This field provides up to 8 additional detected path timing values for the TRP or resource, relative to the path timing used for determining the nr-RSTD value. If this field was requested but is not included, it means the UE did not detect any additional path timing values. If this field is present, the field nr-AdditionalPathList shall be absent.

nr-DL-TDOA-AdditionalMeasurementsExt

This field, in addition to the measurements provided in NR-DL-TDOA-MeasElement, provides TOA measurements of up to 4 DL-PRS Resources of a TRP with different UE Rx TEGs. For a certain DL-PRS Resource, there can be up to 8 TOA measurement results with respect to different Rx TEGs.

If this field is present, the field nr-DL-TDOA-AdditionalMeasurements should not be present.

nr-RSTD-ResultDiff

This field provides the additional DL RSTD measurement result relative to nr-RSTD. The RSTD value of this measurement is obtained by adding the value of this field to the value of the nr-RSTD field. The mapping of the field is defined in TS 38.133 [46].

nr-DL-PRS-RSRP-ResultDiff

This field provides the additional DL-PRS RSRP measurement result relative to nr-DL-PRS-RSRP-Result. The DL-PRS RSRP value of this measurement is obtained by adding the value of this field to the value of the nr-DL-PRS-RSRP-Result field. The mapping of the field is defined in TS 38.133 [46].

nr-DL-PRS-FirstPathRSRP-ResultDiff

This field specifies the additional NR DL PRS reference signal received path power (DL PRS-RSRPP) of the first detected path in time relative to nr-DL-PRS-FirstPathRSRP-Result. The DL-PRS RSRPP of first path value of this measurement is obtained by adding the value of this field to the value of the nr-DL-PRS-FirstPathRSRP-Result field. The mapping of the field is defined in TS 38.133 [46].

nr-los-nlos-IndicatorPerResource

This field specifies the target device’s best estimate of the LOS or NLOS of the TOA measurement for the resource. Note, the TOA measurement refers to the TOA of this neighbour TRP or the reference TRP, as applicable, used to determine the nr-RSTD or nr-RSTD-ResultDiff.

This field may only be present if the field nr-LOS-NLOS-Indicator choice indicates perResource.

batch1

The field is mandatory present if the field nr-DL-TDOA-LocationInformationInstances is present in IE NR-DL-TDOA-ProvideLocationInformation; otherwise it is not present.

batch2

The field is optionally present, need ON, if the field nr-DL-TDOA-LocationInformationInstances is present in IE NR-DL-TDOA-ProvideLocationInformation; otherwise it is not present.

measurementReferenceTime

This field specifies the time for which the location estimate is valid.

locationCoordinates

This field provides a location estimate using one of the geographic shapes defined in TS 23.032 [15]. NOTE 1.

locationSource

This field provides the source positioning technology for the location estimate. NOTE 1.

nr-DL-PRS-RstdMeasurementInfoRequest

This field indicates whether the target device is requested to report DL-PRS Resource ID(s) or DL-PRS Resource Set ID(s) used for determining the timing of each TRP in RSTD measurements.

nr-RequestedMeasurements

This field specifies the NR DL-TDOA measurements requested. This is represented by a bit string, with a one‑value at the bit position means the particular measurement is requested; a zero‑value means not requested.

nr-AssistanceAvailability

This field indicates whether the target device may request additional PRS assistance data from the server. TRUE means allowed and FALSE means not allowed.

additionalPaths

This field, if present, indicates that the target device is requested to provide the nr-AdditionalPathList in IE NR-DL-TDOA-SignalMeasurementInformation. If this field is present, the field additionalPathsExt shall be absent.

nr-UE-RxTEG-Request

This field, if present, indicates that the target device is requested to provide the nr-UE-Rx-TEG-ID in IE NR-DL-TDOA-SignalMeasurementInformation.

nr-los-nlos-IndicatorRequest

This field, if present, indicates that the target device is requested to provide the indicated type and granularity of the estimated LOS-NLOS-Indicator in the NR-DL-TDOA-SignalMeasurementInformation.

additionalPathsExt

This field, if present, indicates that the target device is requested to provide the nr-AdditionalPathListExt in IE NR-DL-TDOA-SignalMeasurementInformation. If this field is present, the field additionalPaths shall be absent.

additionalPathsDL-PRS-RSRP-Request

This field, if present, indicates that the target device is requested to provide the nr-DL-PRS-RSRPP for the additional paths in IE NR-AdditionalPathList.

multiMeasInSameReport

This field, if present, indicates that the target device is requested to provide multiple measurement instances in a single measurement report; i.e., include the nr-DL-TDOA-SignalMeasurementInstances (in the case of UE-assisted mode is requested) or nr-DL-TDOA-LocationInformationInstances (in the case of UE-based mode is requested) in IE NR-DL-TDOA-ProvideLocationInformation.

maxDL-PRS-RSTD-MeasurementsPerTRPPair

This field specifies the maximum number of. DL-PRS RSTD measurements per pair of TRPs. The maximum number is defined across all Positioning Frequency Layers.

timingReportingGranularityFactor

This field specifies the recommended reporting granularity for the DL RSTD measurements. Value (0..5) corresponds to (k0..k5) used for nr-RSTD and nr-RSTD-ResultDiff in NR-DL-TDOA-MeasElement. The UE may select a different granularity value for nr-RSTD and nr-RSTD-ResultDiff.

measureSameDL-PRS-ResourceWithDifferentRxTEGs

This field, if present, indicates that the target device is requested to measure the same DL-PRS Resource of a TRP with N different UE Rx TEGs. Enumerated value ‘n0‘ indicates that the number N of different UE Rx TEGs to measure the same DL PRS Resource can be determined by the target device, value ‘n2‘ indicates that the target device is requested to measure the same DL-PRS Resource of a TRP with 2 different UE Rx TEGs, value ‘n3‘ indicates that the target device is requested to measure the same DL-PRS Resource of a TRP with 3 different UE Rx TEGs, and so on.

If this field is present, the field nr-UE-TxTEG-Request should also be present.

reducedDL-PRS-ProcessingSamples

This field, if present and set to ‘requested‘, indicates that the target device is requested to perform the requested measurements with reduced number of samples (M=1 or M=2) as specified in TS 38.133 [46].

lowerRxBeamSweepingFactor-FR2

This field, if present, indicates that the target device is requested to use a lower Rx beam sweeping factor than 8 for FR2 according to UE’s capability.

nr-DL-TDOA-Mode

This field specifies the NR DL-TDOA mode(s) supported by the target device.

periodicalReporting

This field, if present, specifies the positioning modes for which the target device supports periodicalReporting. This is represented by a bit string, with a one‑value at the bit position means periodicalReporting for the positioning mode is supported; a zero‑value means not supported. If this field is absent, the target device does not support periodicalReporting in CommonIEsRequestLocationInformation.

ten-ms-unit-ResponseTime

This field, if present, specifies the positioning modes for which the target device supports the enumerated value ‘ten-milli-seconds‘ in the IE ResponseTime in IE CommonIEsRequestLocationInformation. This is represented by a bit string, with a one‑value at the bit position means ‘ten-milli-seconds’ response time unit for the positioning mode is supported; a zero‑value means not supported. If this field is absent, the target device does not support ‘ten-milli-seconds’ response time unit in CommonIEsRequestLocationInformation.

nr-PosCalcAssistanceSupport

This field indicates the Position Calculation Assistance Data supported by the target device for UE-based DL-TDOA. This is represented by a bit string, with a one‑value at the bit position means the particular assistance data is supported; a zero‑value means not supported.

– bit 0 indicates whether the field nr-TRP-LocationInfo in IE NR-PositionCalculationAssistance is supported or not;

– bit 1 indicates whether the field nr-DL-PRS-BeamInfo in IE NR-PositionCalculationAssistance is supported or not;

– bit 2 indicates whether the field nr-RTD-Info in IE NR-PositionCalculationAssistance is supported or not;

– bit 3 indicates whether the field nr-DL-PRS-TRP-TEG-Info in IE NR-PositionCalculationAssistance is supported or not. The UE can indicate this bit only if the UE supports prs-ProcessingCapabilityBandList and any of maxNrOfDL-PRS-ResourceSetPerTrpPerFrequencyLayer, maxNrOfTRP-AcrossFreqs, maxNrOfPosLayer, maxNrOfDL-PRS-ResourcesPerResourceSet and maxNrOfDL-PRS-ResourcesPerPositioningFrequencylayer. Otherwise, the UE does not include this field.

nr-los-nlos-AssistanceDataSupport

This field, if present, indicates that the target device supports the NR-DL-PRS-ExpectedLOS-NLOS-Assistance in IE NR-PositionCalculationAssistance:

– type indicates whether the target device supports ‘hard‘ value or ‘hard‘ and ‘soft‘ value in LOS-NLOS-Indicator in IE NR-DL-PRS-ExpectedLOS-NLOS-Assistance.

– granularity indicates whether the target device supports nr-los-nlos-indicator in IE NR-DL-PRS-ExpectedLOS-NLOS-Assistance ‘per-trp‘, ‘per-resource‘, or both.

The UE can include this field only if the UE supports one of maxDL-PRS-RSRP-MeasurementFR1, maxDL-PRS-RSRP-MeasurementFR2, dl-RSTD-MeasurementPerPairOfTRP-FR1, dl-RSTD-MeasurementPerPairOfTRP-FR2, maxNrOfRx-TX-MeasFR1, maxNrOfRx-TX-MeasFR2, supportOfRSRP-MeasFR1 and supportOfRSRP-MeasFR2. Otherwise, the UE does not include this field.

NOTE: A single value is reported when both Multi-RTT and DL-TDOA are supported.

nr-DL-PRS-ExpectedAoD-or-AoA-Sup

This field, if present, indicates that the target device supports the NR-DL-PRS-ExpectedAoD-or-AoA in NR-DL-PRS-AssistanceData.

nr-DL-TDOA-On-Demand-DL-PRS-Support

This field, if present, indicates that the target device supports on-demand DL-PRS requests.

nr-los-nlos-IndicatorSupport

This field, if present, indicates that the target device supports nr-los-nlos-Indicator reporting in IE NR-DL-TDOA-SignalMeasurementInformation.

– type indicates whether the target device supports ‘hard‘ value or ‘hard‘ and ‘soft‘ value in IE LOS-NLOS-Indicator.

– granularity indicates whether the target device supports LOS-NLOS-Indicator reporting per TRP, per DL-PRS Resource, or both.

additionalPathsExtSupport

This field, if present, indicates that the target device supports the nr-AdditionalPathListExt reporting in IE NR-DL-TDOA-SignalMeasurementInformation. The enumerated value indicates the number of additional paths supported by the target device.

NOTE: The supportOfDL-PRS-FirstPathRSRP in IE NR-DL-TDOA-MeasurementCapability also applies to the additional paths.

scheduledLocationRequestSupported

This field, if present, specifies the positioning modes for which the target device supports scheduled location requests – i.e., supports the IE ScheduledLocationTime in IE CommonIEsRequestLocationInformation – and the time base(s) supported for the scheduled location time for each positioning mode. If this field is absent, the target device does not support scheduled location requests.

nr-dl-prs-AssistanceDataValidity

This field, if present, indicates that the target device supports validity conditions for pre-configured assistance data and comprises the following subfields:

– area-validity indicates that the target device supports pre-configured assistance data with area validity. The integer number indicates the maximum number of areas the target device supports.

multiMeasInSameMeasReport

This field, if present, indicates that the target device supports multiple measurement instances in a single measurement report.

mg-ActivationRequest

This field, if present, indicates that the target device supports low latency measurement gap activation request for DL-PRS measurements. The UE can include this field only if the UE supports mg-ActivationRequestPRS-Meas and mg-ActivationCommPRS-Meas defined in TS 38.331 [35].

dl-RSTD-MeasurementPerPairOfTRP-FR1

Indicates number of DL RSTD measurements per pair of TRPs on FR1.

dl-RSTD-MeasurementPerPairOfTRP-FR2

Indicates number of DL RSTD measurements per pair of TRPs on FR2.

supportOfDL-PRS-RSRP-MeasFR1

Indicates whether the UE supports DL-PRS RSRP measurement for DL-TDOA on FR1.

supportOfDL-PRS-RSRP-MeasFR2

Indicates whether the UE supports DL-PRS RSRP measurement for DL-TDOA on FR2.

nr-UE-TEG-Capability

Indicates the UE TEG capability.

supportOfDL-PRS-FirstPathRSRP

Indicates whether the target device supports DL-PRS RSRPP of first path measurement for DL-TDOA. The UE can include this field only if the UE supports prs-ProcessingCapabilityBandList. Otherwise, the UE does not include this field.

dl-PRS-MeasRRC-Inactive

This field, if present, indicates that the target device supports DL-PRS measurement in RRC_INACTIVE state. The UE can include this field only if the UE supports maxNrOfDL-PRS-ResourceSetPerTrpPerFrequencyLayer, maxNrOfTRP-AcrossFreqs, maxNrOfPosLayer and dl-PRS-BufferType-RRC-Inactive. Otherwise, the UE does not include this field.

NOTE 1: This capability is applicable to both, UE-assisted and UE-based DL-TDOA.

NOTE 2: The capabilities NR-DL-PRS-ResourcesCapability, dl-RSTD-MeasurementPerPairOfTRP-FR1, dl-RSTD-MeasurementPerPairOfTRP-FR2, supportOfDL-PRS-RSRP-MeasFR1, supportOfDL-PRS-RSRP-MeasFR2, simul-NR-DL-AoD-DL-TDOA are the same in RRC_INACTIVE state.