Relay design for sidelink communications using network coding

An apparatus for wireless communication at a node, comprising:

• one or more memories storing processor-executable code;
• and
• one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the node to:
• receive, from a first user equipment (UE) of a plurality of UEs configured for UE-to-UE sidelink communications, a first subset of network coded packets in a first sidelink communication that is transmitted from the first UE to other UEs of the plurality of UEs;
• receive, from a second UE of the plurality of UEs, a feedback report for the first subset of network coded packets that indicates unsuccessful receipt of at least a first packet at the second UE;
• receive, from the second UE, channel information associated with the second UE with the feedback report;
• and
• transmit, responsive to the feedback report, a second communication to the second UE that includes information associated with the first packet.

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

• receiving, from a first UE, a first subset of network coded packets in a first sidelink communication;
• transmitting, to a node, a feedback report corresponding to feedback for the first subset of network coded packets indicating unsuccessful receipt of at least a first packet at the second UE, wherein the feedback report indicates a negative acknowledgment for the first packet;
• transmitting, to the node, channel information associated with the second UE with the feedback report;
• and
• receiving a transmission from the node that provides information associated with the first packet.

A method for wireless communication at a node, comprising:

• receiving, from a first user equipment (UE) of a plurality of UEs configured for UE-to-UE sidelink communications, a first subset of network coded packets in a first sidelink communication that is transmitted from the first UE to other UEs of the plurality of UEs;
• receiving, from a second UE of the plurality of UEs, a feedback report for the first subset of network coded packets that indicates unsuccessful receipt of at least a first packet at the second UE;
• receiving, from the second UE, channel information associated with the second UE with the feedback report;
• and
• transmitting, responsive to the feedback report, a second communication to the second UE that includes information associated with the first packet.