Method for terminal to transmit and receive feedback signal in wireless communication system supporting sidelink, and device for same

1. A method of transmitting a feedback signal by a first User Equipment (UE) in a wireless communication system, the method comprising:

receiving a control signal from a second UE; and

determining whether to transmit the feedback signal for a first signal based on the control signal,

wherein whether to transmit the feedback signal is determined based on angle information related to the control signal, and

wherein the angle information is determined based on a resource index of a SSB (Synchronization Signal/Physical Broadcast Channel block) or a resource index of a CSI-RS (channel state information-reference signal) included in the control signal.

2. The method of claim 1 , wherein the feedback signal is transmitted based on the first UE being located in an angle range specified based on the angle information with reference to a first reference direction.

3. The method of claim 1 , wherein the control signal further includes information on a threshold distance and wherein the feedback signal is transmitted based on a distance between the first UE and the second UE being within the threshold distance and the first UE being located in an angle range specified based on the angle information with reference to a first reference direction.

4. The method of claim 1 , wherein the control signal further includes information on a threshold related to Reference Signal Received Power (RSRP) and wherein the feedback signal is transmitted based on the RSRP measured for the control signal being equal to or greater than the threshold and the first UE being located in an angle range specified based on the angle information with reference to a first reference direction.

5. The method of claim 2 , wherein the first reference direction comprises a direction indicated by the control signal among a plurality of preconfigured reference directions.

6. The method of claim 2 , wherein the angle range is specified based on a start angle and an offset angle acquired from the angle information.

7. The method of claim 6 , wherein the start angle and the offset angle are acquired based on index information, which is included in the angle information, of a Tx beam used by the second UE.

8. The method of claim 1 , wherein the control signal comprises a Physical Sidelink Control Channel (PSCCH).

9. A method of receiving a feedback signal by a second User Equipment (UE) in a wireless communication system, the method comprising:

transmitting a control signal to at least one or more first UEs; and

receiving the feedback signal for a first signal,

wherein the feedback signal is received from a first UE located in an angle range corresponding to angle information among the at least one or more first UEs, and

wherein the angle information is determined based on a resource index of a SSB (Synchronization Signal/Physical Broadcast Channel block) or a resource index of a CSI-RS (channel state information-reference signal) included in the control signal.

10. The method of claim 9 , wherein the feedback signal is received from the first UE located in an angle range specified based on the angle information with reference to a first reference direction.

11. The method of claim 9 , wherein the control signal further includes information on a threshold distance and wherein the feedback signal is received from the first UE having a distance from the second UE within the threshold distance and located in an angle range specified based on the angle information with reference to a first reference direction.

12. The method of claim 10 , wherein the first reference direction is indicated over the control signal.

13. A first User Equipment (UE) transmitting a feedback signal in a wireless communication system, the first UE comprising:

a Radio Frequency (RF) transceiver; and

a processor connected to the RF transceiver, the processor configured to receive a control signal from a second UE by controlling the RF transceiver and determine whether to transmit a feedback signal for a first signal based on the control signal,

wherein whether to transmit the feedback signal is determined based on angle information related to the control signal, and

wherein the angle information is determined based on a resource index of a SSB Synchronization Signal/Physical Broadcast Channel block) or a resource index of a CSI-RS (channel state information-reference signal) included in the control signal.

14. A chipset transmitting a feedback signal in a wireless communication system, the chipset comprising:

at least one processor; and

at least one memory operatively connected to the at least one processor and enabling the at least one processor to perform an operation when executed,

the operation comprising:

receiving a control signal from another UE; and

determining whether to transmit the feedback signal for a first signal based on the control signal,

wherein whether to transmit the feedback signal is determined based on angle information related to the control signal, and

wherein the angle information is determined based on a resource index of a SSB (Synchronization Signal/Physical Broadcast Channel block) or a resource index of a CSI-RS (channel state information-reference signal) included in the control signal.

15. A non-transitory computer-readable storage medium including at least one computer program enabling at least one processor to perform an operation of transmitting a feedback signal in a wireless communication system, the computer-readable storage medium comprising:

at least one computer program enabling the at least one processor to perform an operation of transmitting a feedback signal; and

storing the at least one computer program,

wherein the operation comprises receiving a control signal from another UE and determining whether to transmit the feedback signal for a first signal based on the control signal,

wherein whether to transmit the feedback signal is determined based on angle information related to the control signal, and

wherein the angle information is determined based on a resource index of a SSB (Synchronization Signal/Physical Broadcast Channel block) or a resource index of a CSI-RS (channel state information-reference signal) included in the control signal.