Distributed sidelink resource allocation

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

• a processor, and
• memory coupled with the processor and storing instructions executable by the processor to cause the apparatus to:
• determine shared resources for communicating over one or more sidelink communication links, the shared resources comprising control resources and data resources, the control resources in a first portion of a slot being allocated for sending a sidelink request by the first UE;
• transmit, to a second UE on a transmission beam over the control resources in the first portion of the slot, the sidelink request to reserve a subset of the data resources;
• monitor, by the first UE on a receive beam over control resources in a second portion of the slot, for one or more sidelink responses from one or more UEs, the one or more sidelink responses indicating a positive sidelink response to the sidelink request to reserve the subset of the data resources, a negative sidelink response to the sidelink request to reserve the subset of the data resources, or both, the control resources in the second portion of the slot being allocated for the one or more sidelink responses;
• and
• determine, based at least in part on the monitoring, whether to transmit a sidelink confirmation indicating a reservation of the subset of the data resources to the second UE over control resources in a third portion of the slot, the control resources in the third portion of the slot being allocated for the sidelink confirmation.