1. A method of communication at a user equipment (UE) operating in a wireless communication network, comprising:while performing a clear channel assessment (CCA) procedure for a first stored uplink grant of one or more stored uplink grants within a queue;
receiving, asynchronously, an uplink grant from a network entity on a downlink communication channel, wherein the uplink grant is associated with a system frame number (SFN);
determining, based on the SFN, that the uplink grant is out of order with the one or more stored uplink grants within the queue; and
inserting the uplink grant in an ordered position within the queue relative to the one or more stored uplink grants.