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, a physical sidelink control channel (PSCCH);
receiving, from the second device, (i) location information of the second device, (ii) data, and (iii) information regarding a communication range, via a physical sidelink shared channel (PSSCH) related to the PSCCH;
obtaining a distance between the first device and the second device, based on the location information of the second device and location information of the first device; and
determining whether or not to transmit a hybrid automatic repeat request (HARQ) feedback for the data to the second device, based on (i) the distance between the first device and the second device, (ii) the information regarding the communication range, and (iii) whether or not the first device has decoded the data.
2. The method of claim 1 , wherein the distance between the first device and the second device is less than or equal to the communication range.
3. The method of claim 2 , wherein the HARQ feedback for the data is transmitted to the second device, based on a failure to decode the data by the first device, and
wherein the HARQ feedback is a HARQ NACK.
4. The method of claim 2 , wherein the HARQ feedback for the data is not transmitted to the second device, based on a successful decoding of the data by the first device.
5. The method of claim 1 , further comprising:
determining whether or not to transmit the HARQ feedback for the data to the second device, based on a channel status for the second device.
6. The method of claim 1 , wherein the location information includes only part of the information among the location information of the second device.
7. The method of claim 1 , wherein the location information includes an identifier of a zone to which the second device belongs and an identifier of a zone being adjacent to the zone to which the second device belongs.
8. The method of claim 1 , wherein the location information includes at least one of longitude, latitude, or altitude of the second device.
9. A method for performing, by a second device, wireless communication, the method comprising:
transmitting, to a first device, a physical sidelink control channel (PSCCH);
transmitting, to the first device, (i) location information of the second device, (ii) data, and (iii) information regarding a communication range, via a physical sidelink shared channel (PSSCH) related to the PSCCH; and
receiving, from the first device, a hybrid automatic repeat request (HARQ) feedback for the data, based on (i) a distance between the first device and the second device, (ii) the information regarding the communication range, and (iii) whether or not the first device has decoded the data,
wherein the distance between the first device and the second device is obtained by the first device, based on the location information of the second device and location information of the first device.
10. A first device configured to perform wireless communication, the first device comprising:
one or more memories;
one or more transceivers; and
one or more processors operatively connecting the one or more memories and the one or more transceivers,
wherein the one or more processors are configured to:
control the one or more transceivers to receive, from a second device, a physical sidelink control channel (PSCCH);
control the one or more transceivers to receive, from the second device, (i) location information of the second device, (ii) data, and (iii) information regarding a communication range, via a physical sidelink shared channel (PSSCH) related to the PSCCH;
obtain a distance between the first device and the second device, based on the location information of the second device and location information of the first device; and
determine whether or not to transmit a hybrid automatic repeat request (HARQ) feedback for the data to the second device, based on (i) the distance between the first device and the second device, (ii) the information regarding the communication range, and (iii) whether or not the first device has decoded the data.