Method and apparatus for SL positioning within network coverage
Methods and apparatuses for sidelink (SL) positioning within network coverage in a wireless communication system. A method of operating a user equipment (UE) includes receiving, via a downlink (DL) interface, configuration information for a sidelink (SL) positioning reference signal (PRS) and determining, based on the configuration information, resources for the SL PRS on a SL interface. The method further includes transmitting, via the SL interface, an indication of the resources for the SL PRS and transmitting the SL PRS on the indicated resources.
1 . A first user equipment (UE), comprising:
a transceiver; and
at least one processor operably coupled to the transceiver, the at least one processor configured to:
receive, from a base station, configuration information for a sidelink (SL) positioning reference signal (PRS),
identify resources information for the SL PRS based on the configuration information,
transmit, to a second UE, the resources information for the SL PRS, and
transmit, to the second UE, the SL PRS based on the resources information,
wherein the resources information is identified based on downlink control information (DCI), and
wherein a number of instances of the resources information for the SL PRS is configured to 2 or 3.
2 . The first UE of claim 1 ,
wherein the resources information is transmitted by a sidelink control information (SCI) using a physical sidelink control channel (PSCCH) or a physical sidelink shared channel (PSSCH).
3 . The first UE of claim 2 ,
wherein the SCI and SL PRS associated with the SCI are transmitted in the same slot, and
wherein the SCI and the SL PRS associated with the SCI are time division multiplexed.
4 . The first UE of claim 1 ,
wherein the configuration information relates to a report of a SL positioning measurement, and
wherein the resources information relates to the report of the SL positioning measurement.
5 . The first UE of claim 4 ,
wherein the at least one processor is further configured to:
receive, from the second UE, information on the SL positioning measurement.
6 . The first UE of claim 1 ,
wherein the configuration information include at least one of SL reference signal time difference (RSTD), SL reference signal receive power (RSRP), SL angle of arrival (AoA) of the SL PRS, or reception-transmission (Rx-Tx) time difference.
7 . A method performed by a user equipment (UE), the method comprising:
receiving, from a base station, configuration information for a sidelink (SL) positioning reference signal (PRS);
identifying resources for the SL PRS based on the configuration information;
transmitting, to a second UE, the resources information for the SL PRS; and
transmitting, to the second UE, the SL PRS based on the resources information,
wherein the resources information is identified based on downlink control information (DCI), and
wherein a number of instances of the resources information for the SL PRS is configured to 2 or 3.
8 . The method of claim 7 ,
wherein the configuration information relates to a report of a SL positioning measurement, and
wherein the resources information relates to the report of the SL positioning measurement.
9 . The method of claim 7 , further comprising:
receiving, from the second UE, information on SL positioning measurement.
10 . A second user equipment (UE), comprising:
a transceiver; and
at least one processor operably coupled to the transceiver, the at least one processor configured to:
receive, from a first UE, resources information for a sidelink (SL) positioning reference signal (PRS), and
receive, from the first UE, the SL PRS based on the resources information,
wherein the resources information is identified based on downlink control information (DCI), and
wherein a number of instances of the resources information for the SL PRS is configured to 2 or 3.
11 . The second UE of claim 10 ,
wherein the at least one processor is further configured to:
perform a SL positioning measurement based on the received SL PRS, and
transmit, to the first UE, information on the SL positioning measurement.
12 . A method performed by a second user equipment (UE), the method comprising:
receiving, from a first UE, resources information for a sidelink (SL) positioning reference signal (PRS); and
receiving, from the first UE, the SL PRS based on the resources information,
wherein the resources information is identified based on downlink control information (DCI), and
wherein a number of instances of the resources information for the SL PRS is configured to 2 or 3.