Methods and systems for inter-ue coordination scheme2

A user equipment (UE), comprising:

• a transceiver;
• and
• a processor configured to:
• transmit to a second UE a first sidelink control information (SCI) format payload identifying a number of resources reserved for transmission;
• in response to the first SCI format payload, receive a physical sidelink feedback channel (PSFCH) from the second UE for inter-UE coordination (IUC);
• and
• in response to the received PSFCH, detect resource collision for one or more resources of the number of resources reserved for transmission by the UE.

A method, comprising:

• receiving, at a first user equipment (UE) from a second UE, a first sidelink control information (SCI) format payload identifying a number of resources reserved for transmission by the second UE;
• based on the received first SCI format payload and one or more resources selected by the first UE for transmission, detecting, by the first UE, resource collision corresponding to the one or more resources of the number of resources reserved for transmission by the second UE;
• in response to the detected resource collision, transmitting, from the first UE to the second UE, a PSFCH for inter-UE coordination (IUC) notifying the second UE of the detected resource collision;
• and
• prioritizing, by the first UE, transmission of the PSFCH for the IUC along transmission of HARQ, an uplink transmission, and a sidelink transmission or reception.