6.5.9 NR E-CID Positioning

37.3553GPPLTE Positioning Protocol (LPP)Release 17TS

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

This clause defines the information elements for NR E-CID positioning (TS 38.305 [40]).

6.5.9.1 NR E-CID Location Information

– NR-ECID-ProvideLocationInformation

The IE NR-ECID-ProvideLocationInformation is used by the target device to provide NR E-CID location measurements to the location server. It may also be used to provide NR E-CID positioning specific error reason.

— ASN1START

NR-ECID-ProvideLocationInformation-r16 ::= SEQUENCE {

nr-ECID-SignalMeasurementInformation-r16 NR-ECID-SignalMeasurementInformation-r16 OPTIONAL,

nr-ECID-Error-r16 NR-ECID-Error-r16 OPTIONAL,

…

}

— ASN1STOP

6.5.9.2 NR E-CID Location Information Elements

– NR-ECID-SignalMeasurementInformation

The IE NR-ECID-SignalMeasurementInformation is used by the target device to provide NR E-CID measurements to the location server.

— ASN1START

NR-ECID-SignalMeasurementInformation-r16 ::= SEQUENCE {

nr-PrimaryCellMeasuredResults-r16 NR-MeasuredResultsElement-r16,

nr-MeasuredResultsList-r16 NR-MeasuredResultsList-r16 OPTIONAL,

…

}

NR-MeasuredResultsList-r16 ::= SEQUENCE (SIZE(1..32)) OF NR-MeasuredResultsElement-r16

NR-MeasuredResultsElement-r16 ::= SEQUENCE {

nr-PhysCellID-r16 NR-PhysCellID-r16,

nr-ARFCN-r16 CHOICE {

ssb-ARFCN-r16 ARFCN-ValueNR-r15,

csi-RS-pointA-r16 ARFCN-ValueNR-r15

nr-CellGlobalID-r16 NCGI-r15 OPTIONAL,

systemFrameNumber-r16 BIT STRING (SIZE (10)) OPTIONAL, resultsSSB-Cell-r16 MeasQuantityResults-r16 OPTIONAL,

resultsCSI-RS-Cell-r16 MeasQuantityResults-r16 OPTIONAL,

resultsSSB-Indexes-r16 ResultsPerSSB-IndexList-r16 OPTIONAL,

resultsCSI-RS-Indexes-r16 ResultsPerCSI-RS-IndexList-r16 OPTIONAL,

…

}

MeasQuantityResults-r16 ::= SEQUENCE {

nr-RSRP-r16 INTEGER (0..127) OPTIONAL,

nr-RSRQ-r16 INTEGER (0..127) OPTIONAL

}

ResultsPerSSB-IndexList-r16::= SEQUENCE (SIZE (1..64)) OF ResultsPerSSB-Index-r16

ResultsPerSSB-Index-r16 ::= SEQUENCE {

ssb-Index-r16 INTEGER (0..63),

ssb-Results-r16 MeasQuantityResults-r16

}

ResultsPerCSI-RS-IndexList-r16::= SEQUENCE (SIZE (1..64)) OF ResultsPerCSI-RS-Index-r16

ResultsPerCSI-RS-Index-r16 ::= SEQUENCE {

csi-RS-Index-r16 INTEGER (0..95),

csi-RS-Results-r16 MeasQuantityResults-r16

}

— ASN1STOP

NR-ECID-SignalMeasurementInformation field descriptions
*systemFrameNumber* This field specifies the system frame number of the measured cell during which the measurements have been performed. The target device shall include this field if it was able to determine the SFN of the cell at the time of measurement.
*resultsSSB-Cell* This field specifies the SS reference signal received power (SS-RSRP) and quality (SS-RSRQ) measurement aggregated at cell level, as defined in TS 38.331 [35].
*resultsCSI-RS-Cell* This field specifies the CSI-RS reference signal received power (CSI-RSRP) and quality (CSI-RSRQ) measurement aggregated at cell level, as defined in TS 38.331 [35].
*resultsSSB-Indexes* This field specifies the SS reference signal received power (SS-RSRP) and quality (SS-RSRQ) measurement per SSB resource, as defined in TS 38.331 [35].
*resultsCSI-RS-Indexes* This field specifies the CSI-RS reference signal received power (CSI-RSRP) and quality (CSI-RSRQ) per CSI-RS resource, as defined in TS 38.331 [35].
*nr-RSRP* This field specifies the integer value for RSRP measurements according to Table 10.1.6.1-1 in TS 38.133 [46].
*nr-RSRQ* This field specifies the integer value for RSRQ measurements accordng to Table 10.1.11.1-1 in TS 38.133 [46].

NR-ECID-SignalMeasurementInformation field descriptions

nr-PrimaryCellMeasuredResults

This field contains the NR E-CID measurements for the primary cell.

nr-MeasuredResultsList

This field contains the NR E-CID measurements for up to 32 neighbour cells.

nr-PhysCellID

This field specifies the NR physical cell identity of the measured cell.

nr-ARFCN

This field specifies the ARFCN of the first RE of SSB’s RB#10 or the point A of CSI-RS.

nr-CellGlobalID

This field specifies the NR cell global ID of the measured cell. The target device shall provide this field if it was able to determine the NCGI of the measured cell at the time of measurement.

systemFrameNumber

This field specifies the system frame number of the measured cell during which the measurements have been performed. The target device shall include this field if it was able to determine the SFN of the cell at the time of measurement.

resultsSSB-Cell

This field specifies the SS reference signal received power (SS-RSRP) and quality (SS-RSRQ) measurement aggregated at cell level, as defined in TS 38.331 [35].

resultsCSI-RS-Cell

This field specifies the CSI-RS reference signal received power (CSI-RSRP) and quality (CSI-RSRQ) measurement aggregated at cell level, as defined in TS 38.331 [35].

resultsSSB-Indexes

This field specifies the SS reference signal received power (SS-RSRP) and quality (SS-RSRQ) measurement per SSB resource, as defined in TS 38.331 [35].

resultsCSI-RS-Indexes

This field specifies the CSI-RS reference signal received power (CSI-RSRP) and quality (CSI-RSRQ) per CSI-RS resource, as defined in TS 38.331 [35].

nr-RSRP

This field specifies the integer value for RSRP measurements according to Table 10.1.6.1-1 in TS 38.133 [46].

nr-RSRQ

This field specifies the integer value for RSRQ measurements accordng to Table 10.1.11.1-1 in TS 38.133 [46].

6.5.9.3 NR E-CID Location Information Request

– NR-ECID-RequestLocationInformation

The IE NR-ECID-RequestLocationInformation is used by the location server to request NR E-CID location measurements from a target device.

— ASN1START

NR-ECID-RequestLocationInformation-r16 ::= SEQUENCE {

requestedMeasurements-r16 BIT STRING { ssrsrpReq (0),

ssrsrqReq (1),

csirsrpReq (2),

csirsrqReq (3)} (SIZE(1..8)),

…

}

— ASN1STOP

NR-ECID-RequestLocationInformation field descriptions
*requestedMeasurements* This field specifies the NR E-CID 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-ECID-RequestLocationInformation field descriptions

requestedMeasurements

This field specifies the NR E-CID 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.

6.5.9.4 NR E-CID Capability Information

– NR-ECID-ProvideCapabilities

The IE NR-ECID-ProvideCapabilities is used by the target device to indicate its capability to support NR E-CID and to provide its NR E-CID positioning capabilities to the location server.

— ASN1START

NR-ECID-ProvideCapabilities-r16 ::= SEQUENCE {

nr-ECID-MeasSupported-r16 BIT STRING { ssrsrpSup (0),

ssrsrqSup (1),

csirsrpSup (2),

csirsrqSup (3)} (SIZE(1..8)),

periodicalReporting-r16 ENUMERATED { supported } OPTIONAL,

triggeredReporting-r16 ENUMERATED { supported } OPTIONAL,

…,

[[

ten-ms-unit-ResponseTime-r17 ENUMERATED { supported } OPTIONAL,

scheduledLocationRequestSupported-r17

ScheduledLocationTimeSupport-r17 OPTIONAL

]]

}

— ASN1STOP

NR-ECID-ProvideCapabilities field descriptions
*nr-ECID-MeasSupported:* Indicates the supported NR ECID measurements: – ssrsrpSup indicates the UE supports SSB based cell/beam specific RSRP measurement; – ssrsrqSup indicates the UE supports SSB based cell/beam specific RSRQ measurement; – csirsrpSup indicates the UE supports CSI-RS based cell/beam specific RSRP measurement; – csirsrqSup indicates the UE supports CSI-RS based cell/beam specific RSRQ measurement.
*ten-ms-unit-ResponseTime* This field, if present, indicates that the target device supports the enumerated value ‘ten-milli-seconds‘ in the IE ResponseTime in IE CommonIEsRequestLocationInformation.
*scheduledLocationRequestSupported* This field, if present, indicates that 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.

NR-ECID-ProvideCapabilities field descriptions

nr-ECID-MeasSupported:

Indicates the supported NR ECID measurements:

– ssrsrpSup indicates the UE supports SSB based cell/beam specific RSRP measurement;

– ssrsrqSup indicates the UE supports SSB based cell/beam specific RSRQ measurement;

– csirsrpSup indicates the UE supports CSI-RS based cell/beam specific RSRP measurement;

– csirsrqSup indicates the UE supports CSI-RS based cell/beam specific RSRQ measurement.

ten-ms-unit-ResponseTime

This field, if present, indicates that the target device supports the enumerated value ‘ten-milli-seconds‘ in the IE ResponseTime in IE CommonIEsRequestLocationInformation.

scheduledLocationRequestSupported

This field, if present, indicates that 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.

6.5.9.5 NR E-CID Capability Information Request

– NR-ECID-RequestCapabilities

The IE NR-ECID-RequestCapabilities is used by the location server to request the capability of the target device to support NR E-CID and to request NR E-CID positioning capabilities from a target device.

— ASN1START

NR-ECID-RequestCapabilities-r16 ::= SEQUENCE {

…

}

— ASN1STOP

6.5.9.6 NR E-CID Error Elements

– NR-ECID-Error

The IE NR-ECID-Error is used by the location server or target device to provide NR E-CID error reasons to the target device or location server, respectively.

— ASN1START

NR-ECID-Error-r16 ::= CHOICE {

locationServerErrorCauses-r16 NR-ECID-LocationServerErrorCauses-r16,

targetDeviceErrorCauses-r16 NR-ECID-TargetDeviceErrorCauses-r16,

…

}

— ASN1STOP

– NR-ECID-LocationServerErrorCauses

The IE NR-ECID-LocationServerErrorCauses is used by the location server to provide NR E-CID error reasons to the target device.

— ASN1START

NR-ECID-LocationServerErrorCauses-r16 ::= SEQUENCE {

cause-r16 ENUMERATED { undefined,

…

}

— ASN1STOP

– NR-ECID-TargetDeviceErrorCauses

The IE NR-ECID-TargetDeviceErrorCauses is used by the target device to provide NR E-CID error reasons to the location server.

— ASN1START

NR-ECID-TargetDeviceErrorCauses-r16 ::= SEQUENCE {

cause-r16 ENUMERATED { undefined,

requestedMeasurementNotAvailable,

notAllrequestedMeasurementsPossible,

…

ss-RSRPMeasurementNotPossible-r16 NULL OPTIONAL,

ss-RSRQMeasurementNotPossible-r16 NULL OPTIONAL,

csi-RSRPMeasurementNotPossible-r16 NULL OPTIONAL,

csi-RSRQMeasurementNotPossible-r16 NULL OPTIONAL,

…

}

— ASN1STOP

NR-ECID-TargetDeviceErrorCauses field descriptions
*cause* This field provides a NR E-CID specific error cause. If the cause value is ‘notAllRequestedMeasurementsPossible’, the target device was not able to provide all requested NR E-CID measurements (but may be able to provide some measurements). In this case, the target device should include any of the ss-RSRPMeasurementNotPossible, ss-RSRQMeasurementNotPossible, csi-RSRPMeasurementNotPossible, or csi-RSRQMeasurementNotPossible fields, as applicable.

NR-ECID-TargetDeviceErrorCauses field descriptions

cause

This field provides a NR E-CID specific error cause. If the cause value is ‘notAllRequestedMeasurementsPossible’, the target device was not able to provide all requested NR E-CID measurements (but may be able to provide some measurements). In this case, the target device should include any of the ss-RSRPMeasurementNotPossible, ss-RSRQMeasurementNotPossible, csi-RSRPMeasurementNotPossible, or csi-RSRQMeasurementNotPossible fields, as applicable.