Opportunistic cooperative relaying of sidelink signals

An apparatus for wireless communications at a second user equipment (UE), comprising:

• at least one processor;
• at least one memory coupled with the at least one processor;
• and
• instructions stored in the at least one memory and executable by the at least one processor to cause the apparatus to:
• receive, from a first UE, first sidelink signaling, wherein the first sidelink signaling indicates a request for one or more additional UEs to opportunistically relay the first sidelink signaling in a resource configured for single frequency network-type transmission, and wherein the first sidelink signaling includes a group identifier that indicates a group of UEs associated with the request;
• generate second sidelink signaling corresponding to the first sidelink signaling based at least in part on the request;
• and
• transmit the second sidelink signaling in the resource configured for single frequency network-type transmission based at least in part on the group of UEs comprising the second UE.

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

• transmitting sidelink signaling, wherein the sidelink signaling indicates a request for one or more additional UEs to opportunistically relay the sidelink signaling in a resource configured for single frequency network-type transmission, wherein the sidelink signaling is intended for a destination UE and requests feedback from the destination UE;
• receiving feedback signaling comprising a positive acknowledgment for the sidelink signaling based at least in part on the request for the one or more additional UEs to opportunistically relay the sidelink signaling, wherein the feedback signaling is received from the destination UE in a unicast transmission;
• and
• terminating a beam sweeping procedure based at least in part on receiving the feedback signaling from the destination UE prior to completion of the beam sweeping procedure.

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

• receiving, from a first UE, first sidelink signaling, wherein the first sidelink signaling indicates a request for one or more additional UEs to opportunistically relay the first sidelink signaling in a resource configured for single frequency network-type transmission, and wherein the first sidelink signaling comprises a reservation field indicating one or more resources from a resource pool supporting opportunistic relaying of sidelink signals, the one or more resources comprising at least the resource configured for single frequency network-type transmission;
• generating second sidelink signaling corresponding to the first sidelink signaling based at least in part on the request;
• and
• transmitting the second sidelink signaling in the resource configured for single frequency network-type transmission based at least in part on the generating.