Sidelink positioning group operation via pairwise managed groupcast replies

A method of wireless communication performed by a target user equipment (UE), comprising:

• receiving, from an initiator UE, a first groupcast message for a sidelink group of a plurality of UEs, including the target UE and the initiator UE, wherein the first groupcast message includes a groupcast destination identifier that indicates that the first groupcast message is intended for all of the plurality of UEs of the sidelink group;
• and
• transmitting a second groupcast message to the initiator UE, wherein the second groupcast message includes a pairwise groupcast destination identifier based on a first identifier common to the initiator UE and the target UE and a second identifier specific to the target UE and known to the target UE and the initiator UE, and wherein the pairwise groupcast destination identifier indicates that the second groupcast message is intended only for the initiator UE.

A method of wireless communication performed by an initiator user equipment (UE), comprising:

• transmitting a first groupcast message to a plurality of UEs of a sidelink group, wherein the first groupcast message includes a groupcast destination identifier that indicates that the first groupcast message is intended for all of the plurality of UEs of the sidelink group;
• and
• receiving a second groupcast message from a target UE of the plurality of UEs, wherein the second groupcast message includes a pairwise groupcast destination identifier based on a first identifier common to the initiator UE and the target UE and a second identifier specific to the target UE and known to the target UE and the initiator UE, and wherein the pairwise groupcast destination identifier indicates that the second groupcast message is intended only for the initiator UE.