Patent ID: 11903031
Assignee: WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. A wireless communication apparatus, comprising:
a communication module; and
a processor,
wherein the processor is functionally connected with the communication module, the processor is configured to:
obtain a common back-off counter for a carrier set on which data is to be transmitted,
wherein the common back-off counter is obtained based on a largest contention window value among contention window values of component carriers included in the carrier set,
wherein the contention window values of each of the component carriers is independently configured,
perform back-off for each of the component carriers using the common back-off counter,
perform a CCA (Clear Channel Assessment) for a first component carrier in which the back-off is completed during a predetermined defer period, and
transmit the data on the first component carrier, when the first component carrier is idle during the defer period,
wherein the defer period is composed of at least one slot.