Relaying and related configuration signaling for wireless communications

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

• receiving, from a wireless device, an indication of a relay configuration for a set of UEs that comprises the first UE and one or more second UEs for relaying a data packet, wherein the relay configuration is associated with a set of physical data channel occasions and a corresponding set of physical control channel occasions, and wherein each physical data channel occasion of the set of physical data channel occasions is assigned to a respective UE of the set of UEs;
• transmitting, during a first physical data channel occasion of the set of physical data channel occasions, the data packet to the wireless device and the one or more second UEs based at least in part on the relay configuration;
• and
• receiving, from the wireless device, a positive acknowledgement for the data packet during a physical control channel occasion of the set of physical control channel occasions, wherein the positive acknowledgement indicates that the relay configuration is deactivated for the data packet.

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

• receiving, from a wireless device, an indication of a relay configuration for a set of UEs that comprises a first UE for transmitting a data packet and one or more second UEs for relaying the data packet, the second UE included in the one or more second UEs, wherein the relay configuration is associated with a set of physical data channel occasions and a corresponding set of physical control channel occasions, and wherein each physical data channel occasion of the set of physical data channel occasions is assigned to a respective UE of the set of UEs;
• receiving, from the first UE or another second UE of the one or more second UEs, first signaling associated with the data packet during a first physical data channel occasion of the set of physical data channel occasions;
• receiving, from the wireless device, a negative acknowledgment for the data packet during a first physical control channel occasion of the set of physical control channel occasions, the first physical control channel occasion corresponding to the first physical data channel occasion;
• and
• transmitting, to the wireless device during a second physical data channel occasion of the set of physical data channel occasions, second signaling associated with the data packet based at least in part on receiving the negative acknowledgement, wherein the second signaling is based at least in part on the first signaling.

An apparatus for wireless communication at a wireless device, comprising:

• at least one processor,
• memory coupled with the at least one processor, the memory storing instructions executable by the at least one processor to cause the apparatus to:
• transmit, to a set of user equipments (UEs), an indication of a relay configuration for the set of UEs, the relay configuration associated with a set of physical data channel occasions and a corresponding set of physical control channel occasions, wherein each physical data channel occasion of the set of physical data channel occasions is assigned to a respective UE of the set of UEs, and wherein the set of UEs comprises a first UE for transmitting a data packet and one or more second UEs for relaying the data packet;
• monitor one or more physical data channel occasions of the set of physical data channel occasions after transmitting the indication of the relay configuration;
• receive, based at least in part on the monitoring, the data packet from a UE of the set of UEs during a physical data channel occasion of the set of physical data channel occasions;
• and
• transmit, based at least in part on receiving the data packet, a positive acknowledgement for the data packet to the set of UEs during a physical control channel occasion of the set of physical control channel occasions, the physical control channel occasion corresponding to the physical data channel occasion, wherein the positive acknowledgement indicates that the relay configuration is deactivated for the data packet.