Method and apparatus for HARQ feedback

A first user equipment (UE), comprising:

• at least one memory;
• and
• at least one processor coupled with the at least one memory and configured to cause the first UE to:
• receive location information of a second UE and a communication range required for at least one sidelink transmission from the second UE, wherein each of the at least one sidelink transmission comprises a set of transport blocks (TBs);
• determine relative location information of the first UE based on the received location information of the second UE and the communication range;
• transmit feedback information for the set of TBs on a set of feedback resources at least based on the relative location information, wherein the feedback information comprises a hybrid automatic repeat request (HARQ) acknowledgement (ACK) or non-acknowledgement (NACK) response for each TB of the set of TBs;
• and
• in response to the HARQ ACK or NACK response for the corresponding TB being on a first feedback resource and indicating NACK, receive a retransmission of the corresponding TB.

A second user equipment (UE), comprising:

• at least one memory;
• and
• at least one processor coupled with the at least one memory and configured to cause the second UE to:
• transmit, to a first UE, location information of a second UE and a communication range required for at least one sidelink transmission from the second UE, wherein each of the at least one sidelink transmission comprises a set of transport blocks (TBs);
• detect feedback information associated with a corresponding TB of the set of TBs from the first UE on a set of feedback resources, wherein the detected feedback information comprises a hybrid automatic repeat request (HARQ) acknowledgement (ACK) or non-acknowledgement (NACK) response for each TB of the set of TBs;
• determine whether to retransmit the corresponding TB of the set of TBs based on the detection result of the feedback information;
• and
• in response to the HARQ ACK or NACK response for the corresponding TB being on a first feedback resource and indicating NACK, retransmit the corresponding TB.

A processor for wireless communication, comprising:

• at least one controller coupled with at least one memory and configured to cause the processor to:
• transmit, to a first user equipment (UE), location information of a second UE and a communication range required for at least one sidelink transmission from the second UE, wherein each of the at least one sidelink transmission comprises a set of transport blocks (TBs);
• detect feedback information associated with a corresponding TB of the set of TBs from the first UE on a set of feedback resources, wherein the detected feedback information comprises a hybrid automatic repeat request (HARQ) acknowledgement (ACK) or non-acknowledgement (NACK) response for each TB of the set of TBs;
• determine whether to retransmit the corresponding TB of the set of TBs based on the detection result of the feedback information;
• and
• in response to the HARQ ACK or NACK response for the corresponding TB being on a first feedback resource and indicating NACK, retransmit the corresponding TB.