Patent ID: 11916680
Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A method for sidelink communication, comprising:
a wireless transmit and receive unit (WTRU) determining that data is to be transmitted via a sidelink transmission;
the WTRU selecting sidelink unicast or sidelink groupcast to transmit the data;
the WTRU, on condition that sidelink groupcast is selected to transmit the data, selecting Hybrid Automatic Repeat Request (HARQ) Negative Acknowledgement (NACK) feedback or HARQ Acknowledgement/Negative Acknowledgement (ACK/NACK) feedback based upon one or more of: a number of WTRUs to receive the data, a condition of a channel associated with transmission of the data, or a quality of service associated with transmission of the data;
the WTRU selecting a first Physical Sidelink Feedback Channel (PSFCH) format or a second PSFCH format based upon one or more of the selected sidelink unicast or sidelink groupcast, HARQ NACK feedback or HARQ ACK/NACK feedback being selected, or a quality of service associated with transmission of the data;
the WTRU selecting the second PSFCH format on a condition that sidelink unicast is selected, HARQ ACK/NACK feedback is selected, and the quality of service associated with transmission of the data is high reliability; and
the WTRU transmitting, using the selected sidelink unicast or sidelink groupcast, the data, and information indicating the selected first PSFCH format or second PSFCH format, and information indicating one of HARQ NACK feedback or HARQ ACK/NACK feedback.