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Content for  TS 38.215  Word version:  16.4.0

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5.2  NG-RAN measurement abilities

The structure of the table defining a NG-RAN measurement quantity is shown below.
Definition
Contains the definition of the measurement.

5.2.1  SSS transmit powerWord‑p. 21

Definition
SSS transmit power is determined as the linear average over the power contributions (in [W]) of the resource elements that carry secondary synchronization signals within the secondary synchronization signal (SSS) bandwidth.
For downlink reference signal transmit power determination the secondary synchronization signal according TS 38.211 can be used.
For frequency range 1, the reference point for the downlink reference signal power measurement shall be the transmit antenna connector.
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5.2.2  UL Relative Time of Arrival (TUL-RTOA) |R16|

Definition
The UL Relative Time of Arrival (TUL-RTOA) is the beginning of subframe i containing SRS received in Reception Point (RP) [18] j, relative to the RTOA Reference Time [16].
The UL RTOA reference time is defined as T0 + tSRS, where
  • T0 is the nominal beginning time of SFN 0 provided by SFN Initialization Time (TS 38.455)
  • tSRS = (10nf + nsf)× 10), where nf and nsf are the system frame number and the subframe number of the SRS, respectively.
Multiple SRS resources can be used to determine the beginning of one subframe containing SRS received at a RP.
The reference point for TUL-RTOA shall be:
  • for type 1-C base station TS 38.104: the Rx antenna connector,
  • for type 1-O or 2-O base station TS 38.104: the Rx antenna (i.e. the centre location of the radiating region of the Rx antenna),
  • for type 1-H base station TS 38.104: the Rx Transceiver Array Boundary connector.
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5.2.3  gNB Rx - Tx time difference |R16|

Definition
The gNB Rx - Tx time difference is defined as T - TgNB-TX
Where:
  • TgNB-RX is the Transmission and Reception Point (TRP) [18] received timing of uplink subframe #i containing SRS associated with UE, defined by the first detected path in time.
  • TgNB-TX is the TRP transmit timing of downlink subframe #j that is closest in time to the subframe #i received from the UE.
Multiple SRS resources for positioning can be used to determine the start of one subframe containing SRS.
The reference point for TgNB-RX shall be:
  • for type 1-C base station TS 38.104: the Rx antenna connector,
  • for type 1-O or 2-O base station TS 38.104: the Rx antenna (i.e. the centre location of the radiating region of the Rx antenna),
  • for type 1-H base station TS 38.104: the Rx Transceiver Array Boundary connector.
The reference point for TgNB-TX shall be:
  • for type 1-C base station TS 38.104: the Tx antenna connector,
  • for type 1-O or 2-O base station TS 38.104: the Tx antenna (i.e. the centre location of the radiating region of the Tx antenna),
  • for type 1-H base station TS 38.104: the Tx Transceiver Array Boundary connector.
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5.2.4  UL Angle of Arrival (UL AoA) |R16|Word‑p. 22

Definition
UL Angle of Arrival (UL AoA) is defined as the estimated azimuth angle and vertical angle of a UE with respect to a reference direction, wherein the reference direction is defined:
  • In the global coordinate system (GCS), wherein estimated azimuth angle is measured relative to geographical North and is positive in a counter-clockwise direction and estimated vertical angle is measured relative to zenith and positive to horizontal direction
  • In the local coordinate system (LCS), wherein estimated azimuth angle is measured relative to x-axis of LCS and positive in a counter-clockwise direction and estimated vertical angle is measured relative to z-axis of LCS and positive to x-y plane direction. The bearing, downtilt and slant angles of LCS are defined according to TS 38.901.
The UL AoA is determined at the gNB antenna for an UL channel corresponding to this UE.
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5.2.5  UL SRS reference signal received power (UL SRS-RSRP) |R16|

Definition
UL SRS reference signal received power (UL SRS-RSRP) is defined as linear average of the power contributions (in [W]) of the resource elements carrying sounding reference signals (SRS). UL SRS RSRP shall be measured over the configured resource elements within the considered measurement frequency bandwidth in the configured measurement time occasions.
For frequency range 1, the reference point for the UL SRS-RSRP shall be the antenna connector of the gNB. For frequency range 2, UL SRS-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 gNB, the reported UL SRS-RSRP value shall not be lower than the corresponding UL SRS-RSRP of any of the individual receiver branches.
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$  Change historyWord‑p. 23


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