Physical sidelink feedback channel transmissions

A responding user equipment (UE) for wireless communication, comprising:

• one or more memories storing processor-readable code;
• and
• one or more processors coupled with the one or more memories, at least one processor of the one or more processors configured to cause the responding UE to:
• obtain physical sidelink feedback channel (PSFCH) information that indicates for transmission of hybrid automatic repeat request (HARQ) feedback in at least a first PSFCH transmission occasion of a plurality of PSFCH transmission occasions;
• receive, from an initiating UE, a sidelink communication;
• receive, from the initiating UE, a padding signal indication that indicates for the responding UE to transmit one or more padding signals to the initiating UE;
• transmit, to the initiating UE in accordance with the PSFCH information, HARQ feedback associated with the sidelink communication in at least the first PSFCH transmission occasion of the plurality of PSFCH transmission occasions;
• and
• transmit the one or more padding signals in one or more subsequent PSFCH transmission occasions that are after the first PSFCH transmission occasion in accordance with the padding signal indication.

A method for wireless communication at an initiating user equipment (UE), comprising:

• obtaining physical sidelink feedback channel (PSFCH) information that indicates a plurality of PSFCH transmission occasions;
• transmitting, to a responding UE, a sidelink communication;
• transmitting, to the responding UE, a padding signal indication that indicates for the responding UE to transmit one or more padding signals to the initiating UE;
• receiving, in accordance with the PSFCH information indicating that the responding UE is to transmit hybrid automatic repeat request (HARQ) feedback associated with the sidelink communication in at least a first PSFCH transmission occasion of the plurality of PSFCH transmission occasions, the HARQ feedback associated with the sidelink communication in at least the first PSFCH transmission occasion of the plurality of PSFCH transmission occasions;
• and
• receiving the one or more padding signals in one or more subsequent PSFCH transmission occasions that are after the first PSFCH transmission occasion in accordance with the padding signal indication.

A method for wireless communication at a responding user equipment (UE), comprising:

• obtaining physical sidelink feedback channel (PSFCH) information that indicates for transmission of hybrid automatic repeat request (HARQ) feedback in at least a first PSFCH transmission occasion of a plurality of PSFCH transmission occasions;
• receiving, from an initiating UE, a sidelink communication;
• receiving, from the initiating UE, a padding signal indication that indicates for the responding UE to transmit one or more padding signals to the initiating UE;
• transmitting, to the initiating UE in accordance with the PSFCH information, HARQ feedback associated with the sidelink communication in at least the first PSFCH transmission occasion of the plurality of PSFCH transmission occasions;
• and
• transmitting the one or more padding signals in one or more subsequent PSFCH transmission occasions that are after the first PSFCH transmission occasion in accordance with the padding signal indication.