Method and device for transmitting and receiving location information in NR V2X
Provided herein are a method for receiving, by a first device, location information of a second device in a wireless communication system and a device for supporting the same. The method may include the steps of receiving a physical sidelink control channel (PSCCH) from the second device, and receiving location information of the second device from the second device through a physical sidelink shared channel (PSSCH) related to the PSCCH.
1. A method for performing, by a first device, wireless communication, the method comprising:
receiving, from a second device through a physical sidelink control channel (PSCCH), sidelink control information (SCI);
receiving, from the second device through a physical sidelink shared channel (PSSCH) related to the PSCCH, (i) an identifier (ID) of a zone in which the second device is located, (ii) information related to communication range requirement, and (iii) data;
obtaining a distance based on location of the first device and the ID of the zone; and
transmitting, to the second device, a negative acknowledgement (NACK) for the data, based on that (i) negative-only HARQ feedback is enabled, (ii) the distance is smaller or equal to the communication range requirement, and (iii) the data is not successfully decoded by the first device,
wherein a positive acknowledgement (ACK) for the data is not transmitted based on that (i) the negative-only HARQ feedback is enabled and (ii) the data is successfully decoded by the first device, and
wherein a length of the zone is configured based on the communication range requirement.
2. The method of claim 1 , wherein the wireless communication performed between the first device and the second device is groupcast sidelink communication.
3. The method of claim 1 , wherein information related to the location of the first device is available for the first device.
4. The method of claim 1 , wherein the distance is a distance between the location of the first device and location of the zone related to the ID of the zone.
5. The method of claim 1 , further comprising:
determining whether or not to transmit the NACK for the data to the second device, based on a channel status between the first device and the second device.
6. The method of claim 1 , wherein the length of the zone is configured for the first device per a communication range requirement related to the data.
7. A method for performing, by a second device, wireless communication, the method comprising:
transmitting, to a first device through a physical sidelink control channel (PSCCH), sidelink control information (SCI);
transmitting, to the first device through a physical sidelink shared channel (PSSCH) related to the PSCCH, (i) an identifier (ID) of a zone in which the second device is located, (ii) information related to communication range requirement, and (iii) data; and
receiving, from the first device, a negative acknowledgement (NACK) for the data based on that (i) negative-only HARQ feedback is enabled, (ii) a distance is smaller or equal to the communication range requirement, and (iii) the data is not successfully decoded by the first device,
wherein a positive acknowledgement (ACK) for the data is not received from the first device based on that (i) the negative-only HARQ feedback is enabled and (ii) the data is successfully decoded by the first device,
wherein the distance is obtained based on location of the first device and the ID of the zone, and
wherein a length of the zone is configured based on the communication range requirement.
8. The method of claim 7 , wherein the wireless communication performed between the first device and the second device is groupcast sidelink communication.
9. The method of claim 7 , wherein information related to the location of the first device is available for the first device.
10. The method of claim 7 , wherein the distance is a distance between the location of the first device and location of the zone related to the ID of the zone.
11. The method of claim 7 , wherein the length of the zone is configured for the first device per a communication range requirement related to the data.
12. An apparatus configured to control a first device, the apparatus comprising:
at least one processor; and
at least one memory connected to the at least one processor and storing instructions that, based on being executed by the at least one processor, perform operations comprising:
receiving, from a second device through a physical sidelink control channel (PSCCH), sidelink control information (SCI);
receiving, from the second device through a physical sidelink shared channel (PSSCH) related to the PSCCH, (i) an identifier (ID) of a zone in which the second device is located, (ii) information related to communication range requirement, and (iii) data;
obtaining a distance based on location of the first device and the ID of the zone; and
transmitting, to the second device, a negative acknowledgement (NACK) for the data, based on that (i) negative-only HARQ feedback is enabled, (ii) the distance is smaller or equal to the communication range requirement, and (iii) the data is not successfully decoded by the first device,
wherein a positive acknowledgement (ACK) for the data is not transmitted based on that (i) the negative-only HARQ feedback is enabled and (ii) the data is successfully decoded by the first device, and
wherein a length of the zone is configured based on the communication range requirement.
13. The apparatus of claim 12 , wherein wireless communication performed between the first device and the second device is groupcast sidelink communication.
14. The apparatus of claim 12 , wherein information related to the location of the first device is available for the first device.
15. The apparatus of claim 12 , wherein the distance is a distance between the location of the first device and location of the zone related to the ID of the zone.
16. The apparatus of claim 12 , wherein the length of the zone is configured for the first device per a communication range requirement related to the data.