Patent ID: 11963220
Assignee: APPLE INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 5:
6. A wireless communication device, comprising:
a memory storing software instructions;
processor circuitry configured to implement the software instructions to cause the wireless communication device to:
receive, from a base station, a first message granting an uplink transmission at a particular time, the first message including an indication of a listen-before-talk (LBT) category to be used for the uplink transmission;
receive, from the base station, after receiving the first message, a second message indicating timing information for a channel occupancy time (COT) initiated by the base station;
determine whether the particular time is within the COT initiated by the base station, based on the timing information;
in response to determining that the particular time is not within the COT initiated by the base station, perform an LBT procedure defined by the LBT category indicated in the first message;
in response to determining that the particular time is within the COT initiated by the base station, perform an LBT procedure defined by a second LBT category, other than the LBT category indicated in the first message; and
in response to successful completion of an LBT procedure, transmit the uplink transmission at the particular time.