Method by which terminal transmits and receives signals related to positioning in wireless communication system supporting sidelink, and device therefor

A method by a second user equipment (UE) comprising:

• transmitting, to a first UE, a first physical inter-UE control channel including first scheduling information for a first positioning reference signal (PRS) for positioning related to inter-UE;
• transmitting, to the first UE, the first PRS based on the first inter-UE control information;
• receiving, form the first UE, a second physical inter-UE control channel including second inter-UE control information for a second PRS responding to a reception of the first PRS;
• and
• receiving, form the first UE, the second PRS second PRS based on the second inter-UE control information,
• wherein acknowledgment (ACK) or negative-acknowledgment (NACK) information for the reception of the first PRS is provided to the second UE through a PRS pattern of the second PRS determined based on whether reception of the first PRS was successful.

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:
• receive, from a second UE, a first physical inter-UE control channel including first inter-UE control information for a first positioning reference signal (PRS) for positioning related to inter-UE;
• receive, from the second UE, the first PRS based on the first inter-UE control information;
• transmit, to the second UE, a second physical inter-UE control channel including second inter-UE control information for a second PRS responding to a reception of the first PRS;
• and
• transmit, to the second UE, the second PRS based on the second inter-UE control information,
• wherein acknowledgment (ACK) or negative-acknowledgment (NACK) information for the reception of the first PRS is provided to the second UE through a PRS pattern of the second PRS determined based on whether reception of the first PRS was successful.