Content for  TS 38.215  Word version:  19.1.0

DL reference signal carrier phase (RSCP) is defined as the phase of the channel response at the 1st path delay derived from the resource elements carrying DL PRS configured for the measurement. DL RSCP is associated with the center frequency of the DL positioning frequency layer (PFL) configured for the measurement for RRC_CONNECTED, RRC_INACTIVE, and RRC_IDLE modes. For frequency range 1, the reference point for the DL RSCP shall be the antenna connector of the UE. For frequency range 2, the reference point for the DL RSCP shall be the antenna of the UE.

DL reference signal carrier phase difference (RSCPD) is defined as the difference of DL RSCPs measured from DL PRS transmitted in a DL PFL from the transmission point (TP) j and the reference TP i. If UE reports RSCPD measurements together with RSTD measurements in a measurement report element, the reference TP for RSCPD is the same as the reference TP reported for RSTD. For frequency range 1, the reference point for the DL RSCPD shall be the antenna connector of the UE. For frequency range 2, the reference point for the DL RSCPD shall be the antenna of the UE.

Sidelink PRS Received Signal Strength Indicator (SL PRS-RSSI) is defined as the linear average of the total received power (in [W]) observed in the SL-PRS resource and the associated PSCCH in OFDM symbols of slots configured for PSCCH and in OFDM symbols of slots configured for SL-PRS. For frequency range 1, the reference point for the SL PRS-RSSI shall be the antenna connector of the UE. For frequency range 2, SL PRS-RSSI shall be measured based on the combined signal from antenna elements corresponding to a given receiver branch. For frequency range 1 and 2, if receiver diversity is in use by the UE, the reported SL PRS-RSSI value shall not be lower than the corresponding SL PRS-RSSI of any of the individual receiver branches.

Time domain channel property (TDCP) is defined as wideband normalized correlation between two CSI-RS transmission occasions, corresponding to CSI-RS resourece(s) from NZP-CSI-RS-ResourceSet(s) configured with higher layer parameter trs-info, that are separated by Dn symbols or slots, depending on the configuration, where Dn is the n-th delay configured value among DelayD configured delay values {D1, …, DY} and Y is number of configured delay values. The wideband normalized correlation value in TDCP is quantized in amplitude and if configured by phaseReporting, in phase, as described in clause 5.2.1.4.5 of TS 38.214. For frequency range 1 and 2, if receiver diversity is in use by the UE, the reported TDCP amplitude value shall be no lower than the minimum and no higher than the maximum measured values across the receiver branches. For frequency range 1, the reference point for the TDCP shall be the antenna connector of the UE. For frequency range 2, TDCP shall be measured based on the combined signal from antenna elements corresponding to a given receiver branch.

UE Rx - Tx time difference subframe offset is the index difference which represents the number of subframes between the uplink subframe #j and the uplink subframe #i, where uplink subframe #j is the closest in time to the DL subframe #i received from a transmission point (TP) [18] as defined in clause 5.1.30 and i is the index of the DL subframe used for the UE Rx - Tx time difference measurement as defined in clause 5.1.30. For frequency range 1, the reference point for UE Rx - Tx time difference subframe offset measurement shall be the same antenna connectors as defined in clause 5.1.30 for the UE Rx - Tx time difference measurement. For frequency range 2, the reference point UE Rx - Tx time difference subframe offset measurement shall be the same antenna as defined in Section 5.1.30 for the UE Rx - Tx time difference measurement.

DL timing drift is defined as the variation rate of the downlink delay in ppm due to the service link Doppler over the UE Rx-Tx time difference measurement period. For frequency range 1, the reference point for the DL timing drift measurement shall be the Rx antenna connector of the UE. For frequency range 2, the reference point for the DL timing drift measurement shall be the Rx antenna of the UE.

Sidelink PRS Channel Occupancy Ratio (SL PRS-CR) evaluated at slot n is defined as the total number of SL PRS resource in the dedicated SL PRS resource pool used for its transmissions in slots [n-a, n-1] and granted in slots [n, n+b] divided by the total number of configured SL PRS resources in the transmission pool over [n-a, n+b].

SL PRS Channel Busy Ratio (SL PRS-CBR) measured in slot n is defined as the number of SL PRS resources in the dedicated SL PRS resource pool whose SL PRS RSSI measured by the UE exceed a (pre-)configured threshold provided by the higher layer parameter sl-ThreshS-RSSI-PRS-CBR sensed over a SL PRS-CBR measurement window [n-a, n-1], wherein a is equal to 100 or 100·2µ slots, according to higher layer parameter sl-TimeWindowSizeCBR-Dedicated-SL-PRS-RP divided by the total number of the configured SL PRS resources in the transmission pool over [n-a,n-1]. The calculation of SL PRS-CBR is limited within the slots for which the SL PRS-RSSI is measured. If the number of SL PRS-RSSI measurement slots within the SL PRS-CBR measurement window is below a (pre-)configured threshold, a (pre-)configured SL PRS-CBR value is used.

Coherent joint transmission calibration delay offset is defined as the relative receive time difference, D_"n,offset" , between reference CSI-RS resource set, nref, and selected CSI-RS resource set and out-of-interval indicator, d_n. Out-of-interval indicator, d_n, indicates corresponding relative receive time difference plus delay spread is not larger than the duration of the cyclic prefix for symbols other than 0 and 7∙2^μ and set to '1', otherwise set to '0', Determination of reference CSI-RS resource set, nref, and determination of delay offset and out-of-interval indicator, labelled as 'CJTC-Dd', are describe in clause 5.2.1.4.2 and 5.2.1.4.6 of TS 38.214, respectively. [For frequency range 1, the reference point for the coherent joint transmission calibration delay offset shall be the antenna connector of the UE.]

Coherent joint transmission calibration frequency offset is defined as the relative frequency offset, 〖FO〗_n, between reference CSI-RS resource set nref, and selected CSI-RS resource set. Determination of reference CSI-RS resource set, nref, and determination of frequency offset, labelled as 'CJTC-F', are describe in clause 5.2.1.4.2 and 5.2.1.4.7 of TS 38.214, respectively. [For frequency range 1, the reference point for the coherent joint transmission calibration frequency offset shall be the antenna connector of the UE.]

Coherent joint transmission calibration phase offset is defined as the relative phase offset, Φ_n or Φ_(n,s ), between reference CSI-RS resource, nref, and selected CSI-RS resource over the entire configured reporting band or over the indicated subband, s, respectively. Determination of reference CSI-RS resource, nref, and determination of phase offset, labelled as 'CJTC-P', are describe in clause 5.2.1.4.2 and 5.2.1.4.8 of TS 38.214, respectively. For frequency range 1, coherent joint transmission calibration phase offset shall be measured on the receiver branch(es) associated with the configured port for an SRS resource in the latest SRS transmission occasion before the occasions of the corresponding CSI-RS resources. [For frequency range 1, the reference point for the coherent joint transmission calibration phase offset shall be the antenna connector of the UE.]

Low power reference signal received power (LP-RSRP) is defined as the linear average over the power contributions (in [W]) of the resource elements that carry on-off keying (OOK) ON symbols of Low power synchronization signals (LP-SS). For frequency range 1, the reference point for the LP-RSRP shall be the antenna connector of the UE. For frequency range 2, LP-RSRP shall be measured based on the combined signal from antenna elements corresponding to a given receiver branch. For frequency range 1 and 2, if receiver diversity is in use by the UE, the reported LP-RSRP value shall not be lower than the corresponding LP-RSRP of any of the individual receiver branches.

Low power reference signal received quality (LP-RSRQ) is defined as the ratio of LP-RSRP / LP-RSSI. The measurements in the numerator and denominator shall be made over the same set of frequency resources. Low power received signal strength indicator (LP-RSSI), comprises the linear average of the total received power (in [W]) observed both in on-off keying (OOK) ON and OFF symbols of Low power synchronization signal (LP-SS) over the resource elements that carry LP-SS OOK symbols from all sources, including co-channel serving and non-serving cells, adjacent channel interference, thermal noise etc. For frequency range 1, the reference point for the LP-RSRQ shall be the antenna connector of the UE. For frequency range 2, LP-RSSI shall be measured based on the combined signal from antenna elements corresponding to a given receiver branch, where the combining for LP-RSSI shall be the same as the one used for LP-RSRP measurements. For frequency range 1 and 2, if receiver diversity is in use by the UE, the reported LP-RSRQ value shall not be lower than the corresponding LP-RSRQ of any of the individual receiver branches

For frequency range 1 and 2, if receiver diversity is in use by the UE, the reported SGCS value shall be no lower than the minimum and no higher than the maximum measured values across the receiver branches. For frequency range 1, the reference point for the SGCS shall be the antenna connector of the UE. For frequency range 2, SGCS shall be measured based on the combined signal from antenna elements corresponding to a given receiver branch.