Methods and apparatus for disabling of option 1 hybrid automatic repeat request (HARQ) feedback for sidelink communication

1 . A method comprising:

receiving, by a first communication device, a first indicator indicating distance-based hybrid automatic repeat request (HARQ) feedback operation with negative acknowledgement only and a first sidelink message grant;

decoding, by the first communication device, a received first packet associated with the first sidelink message grant;

in accordance with an unsuccessful decoding of the received first packet, transmitting, by the first communication device, a negative acknowledgement (NACK) based on the first indicator and based on that location information associated with the first communication device is available and a distance based on the location information and that a second location of a second communication device is less than a communication range, wherein the first sidelink message grant comprises the second location of the second communication device and the communication range,

wherein the first indicator, the first sidelink message grant, and the communication range are received in a same SCI message;

receiving, by the first communication device from a third communication device, a third indicator indicating a second sidelink message grant;

determining, by the first communication device, that the location information is available; and

based on the determining that the location information is available:

evaluating, by the first communication device, a second distance between the first communication device and the third communication device;

determining, by the first communication device, that a sidelink message associated with the second sidelink message grant was unsuccessfully received and the second distance meets a distance threshold; and

based on the determining that the sidelink message was unsuccessfully received and the second distance meets the distance threshold:

transmitting, by the first communication device to the third communication device, a second NACK.

2 . The method of claim 1 , the first communication device comprising a sidelink user equipment (UE).

3 . The method of claim 1 , the NACK being transmitted in a physical sidelink feedback channel (PSFCH).

4 . The method of claim 1 , the first indicator being received from the second communication device.

5 . The method of claim 1 , the location information comprising a first location of the first communication device.

6 . The method of claim 1 , the NACK being transmitted to the second communication device.

7 . A method comprising:

receiving, by a first communication device, a first indicator indicating distance-based hybrid automatic repeat request (HARQ) feedback operation with negative acknowledgement only and a first sidelink message grant;

determining, by the first communication device, that location information is unavailable and a first sidelink message associated with the first sidelink message grant was unsuccessfully received;

based on the determining that the location information is unavailable and the first sidelink message was unsuccessfully received:

determining, by the first communication device, a priority of the first sidelink message associated with the first sidelink message grant meets a priority threshold; and

based on the determining that the priority meets the priority threshold:

transmitting a negative acknowledgement (NACK);

receiving, by the first communication device, a second indicator indicating a second sidelink message grant;

determining, by the first communication device, that the location information is unavailable and a second sidelink message associated with the second sidelink message grant was unsuccessfully received; and

based on the determining that the location information is unavailable and the second sidelink message was unsuccessfully received:

determining, by the first communication device, a second priority of the second sidelink message associated with the second sidelink message grant fails to meet the priority threshold; and

based on the determining that the second priority fails to meet the priority threshold:

stopping, by the first communication device, a transmission of the NACK.

8 . The method of claim 7 , the first indicator being received in a sidelink control information (SCI) message.

9 . The method of claim 7 , the first indicator being received from a second communication device.

10 . A first communication device comprising:

one or more processors; and

a non-transitory memory storage comprising instructions that, when executed by the one or more processors, cause the first communication device to:

receive a first indicator indicating distance-based hybrid automatic repeat request (HARQ) feedback operation with negative acknowledgement only and a first sidelink message grant;

decode a received first packet associated with the first sidelink message grant;

in accordance with an unsuccessful decoding of the received first packet, transmit a negative acknowledgement (NACK) based on the first indicator and based on that location information associated with the first communication device is available and a distance based on the location information and that a second location of a second communication device is less than a communication range, wherein the first sidelink message grant comprises the second location of the second communication device and the communication range,

wherein the first indicator, the first sidelink message grant, and the communication range are received in a same SCI message;

receive, from a third communication device, a third indicator indicating a second sidelink message grant;

determine that the location information is available; and

based on determination that the location information is available:

evaluate a second distance between the first communication device and the third communication device; and

determine that a sidelink message associated with the second sidelink message grant was unsuccessfully received and the second distance meets a distance threshold; and

based on determination that the sidelink message was unsuccessfully received and the second distance meets the distance threshold:

transmit, to the third communication device, a second NACK.

11 . The first communication device of claim 10 , the first communication device comprising a sidelink user equipment (UE).

12 . The first communication device of claim 10 , the NACK being transmitted in a physical sidelink feedback channel (PSFCH).

13 . The first communication device of claim 10 , the first indicator being received from the second communication device.

14 . The first communication device of claim 10 , the location information comprising a first location of the first communication device.

15 . The first communication device of claim 10 , the NACK being transmitted to the second communication device.

16 . A first communication device comprising:

one or more processors; and

a non-transitory memory storage comprising instructions that, when executed by the one or more processors, cause the first communication device to:

receive a first indicator indicating distance-based hybrid automatic repeat request (HARQ) feedback operation with negative acknowledgement only and a first sidelink message grant;

determine that location information is unavailable and a first sidelink message associated with the first sidelink message grant was unsuccessfully received;

based on determination that the location information is unavailable:

determine a priority of the first sidelink message associated with the first sidelink message grant meets a priority threshold; and

based on determination that the priority meets the priority threshold:

transmitting a negative acknowledgement (NACK);

receive a second indicator indicating a second sidelink message grant;

determine that the location information is unavailable and a second sidelink message associated with the second sidelink message grant was unsuccessfully received; and

based on determination that the location information is unavailable and the second sidelink message was unsuccessfully received:

determine a second priority of the second sidelink message associated with the second sidelink message grant fails to meet the priority threshold; and

based on determination the second priority fails to meet the priority threshold:

stop a transmission of the NACK.

17 . The first communication device of claim 16 , the first indicator being received in a sidelink control information (SCI) message.

18 . The first communication device of claim 16 , the first indicator being received from a second communication device.