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

Claim 0:
1. 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:
receive, from a base station, data,
transmit, to the base station, a HARQ-ACK related to the data,
wherein the data is transmitted on a first component carrier in a carrier set,
wherein the first component carrier is a component carrier in which back-off using a common back-off counter is completed,
wherein the data is transmitted when the first component carrier is idle during a predetermined defer period by performing a CCA (Clear Channel Assessment) on the first component carrier during the defer period,
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,
wherein the defer period is composed of at least one slot.