Method and device for transmitting or receiving positioning-related signal by terminal in wireless communication system supporting sidelink
Disclosed are a method for transmitting a response PRS, the method comprising the steps of: receiving slot configuration information for configuration of a plurality of slot groups related to the PRS; receiving a request PRS for requesting transmission of the response PRS in one slot group among the plurality of slot groups; and transmitting the response PRS and positioning information on the basis of the slot configuration information, wherein the response PRS is transmitted in a second slot determined on the basis of the slot configuration information and a position of a first slot, in which the request PRS has been received, from among a plurality of slots included in the one slot group, and whether the positioning information is transmitted with the response PRS in the second slot is determined on the basis of whether the first slot and the second slot are continuous in a time domain.
1 . A method by a first user equipment (UE) comprising:
receiving a synchronization signal/physical broadcast channel (SS/PBCH) block for direct communication between UEs,
wherein the SS/PBCH block includes a primary synchronization signal (PSS) for the direct communication between the UEs, a secondary synchronization signal (SSS) for the direct communication between the UEs, and a PBCH for the direct communication between the UEs;
performing a synchronization for the direct communication between the UEs based on the SS/PBCH block;
receiving slot allocation information including information related to a plurality of slots for a positioning reference signal (PRS) for the direct communication between the UEs, wherein the slot allocation information further includes slot pairing information between a first PRS and a second PRS that is transmitted in response to a reception of the first PRS;
receiving the first PRS in a first slot among the plurality of slots;
obtaining measurement information based on the first PRS; and
transmitting the second PRS
in a second slot paired with the first slot among the plurality of slots based on the slot pairing information,
wherein, based on the first slot and the second slot being consecutive in a time domain, the measurement information for the first PRS is transmitted in a third slot following the second slot; and
wherein, based on the first slot and the second slot being non-consecutive in the time domain, the measurement information for the first PRS is transmitted in the second slot together with the second PRS.
2 . The method of claim 1 , wherein the measurement information comprises a difference between a time at which the first PRS is received and a time at which the second PRS is transmitted.
3 . The method of claim 1 , wherein based on the second slot including at least two slots according to the slot pairing information, the second slot is determined as a slot adjacent to the first slot in the time domain among the at least two slots based on a speed of the first UE that is greater than or equal to a predetermined threshold speed.
4 . The method of claim 1 , wherein the first PRS and the second PRS are PRSs for round trip time (RTT) positioning
or time difference of arrival (TDoA) positioning.
5 . A method by a second user equipment (UE) comprising:
receiving a synchronization signal/physical broadcast channel (SS/PBCH) block for direct communication between UEs,
wherein the SS/PBCH block includes a primary synchronization signal (PSS) for the direct communication between the UEs, a secondary synchronization signal (SSS) for the direct communication between the UEs, and a PBCH for the direct communication between the UEs;
performing a synchronization for the direct communication between the UEs based on the SS/PBCH block;
receiving slot allocation information including information related to a plurality of slots for a positioning reference signal (PRS) for the direct communication between the UEs, wherein the slot allocation information further includes slot pairing information between a first PRS and a second PRS that is transmitted in response to a reception of the first PRS;
transmitting the first PRS in a first slot among the plurality of slots; and
receiving the second PRS in a second slot paired with the first slot among the plurality of slots based on the slot pairing information
wherein, based on the first slot and the second slot being consecutive in a time domain, measurement information for the first PRS is received in a third slot following the second slot, and
wherein, based on the first slot and the second slot being non-consecutive in the time domain, the measurement information for the first PRS is transmitted in the second slot together with the second PRS.
6 . A first user equipment (UE) comprising:
a radio frequency (RF) transceiver; and
a processor connected to the RF transceiver,
wherein the processor is configured to control the RF transceiver to:
receiving a synchronization signal/physical broadcast channel (SS/PBCH) block for direct communication between UEs,
wherein the SS/PBCH block includes a primary synchronization signal (PSS) for the direct communication between the UEs, a secondary synchronization signal (SSS) for the direct communication between the UEs, and a PBCH for the direct communication between the UEs;
performing a synchronization for the direct communication between the UEs based on the SS/PBCH block;
receive slot allocation information including information related to a plurality of slots for a positioning reference signal (PRS) for the direct communication between the UEs, wherein the slot allocation information further includes slot pairing information between a first PRS and a second PRS that is transmitted in response to a reception of the first PRS;
obtain measurement information based on the first PRS;
receive the first PRS in a first slot among the plurality of slots; and
transmit the second PRS
in a second slot paired with the first slot among the plurality of slots based on the slot pairing information, and
wherein, based on the first slot and the second slot being consecutive in a time domain, the measurement information for the first PRS is transmitted in a third slot following the second slot
wherein, based on the first slot and the second slot being non-consecutive in the time domain, the measurement information for the first PRS is transmitted in the second slot together with the second PRS.