Sl reliability enhancement by half duplex and collision detection

An apparatus configured for wireless communication, comprising:

• at least one processor;
• and
• a memory coupled to the at least one processor,
• wherein the at least one processor is configured to:
• receive a first transmission from a first user equipment (UE) for a new radio (NR) sidelink channel;
• receive a second transmission from a second UE for the sidelink channel;
• and
• transmit, by the first UE, a feedback transmission based on a medium contention event for the first and second transmissions of the NR sidelink channel and on a range condition.

A method of wireless communication comprising:

• receiving, by a first user equipment (UE), a first transmission from a second UE for a new radio (NR) sidelink channel;
• receiving, by the first UE, a second transmission from a third UE for the NR sidelink channel;
• and
• transmitting, by the first UE, a feedback transmission based on a medium contention event for the first and second transmissions of the NR sidelink channel and on a quality condition.

An apparatus configured for wireless communication, comprising:

• at least one processor;
• and
• a memory coupled to the at least one processor,
• wherein the at least one processor is configured to:
• receive a first transmission from a first UE for a new radio (NR) sidelink channel;
• receive a second transmission from a second UE for the NR sidelink channel;
• and
• transmit a feedback transmission based on a medium contention event for the first and second transmissions of the NR sidelink channel and on a quality condition.