Patent ID: 11924851
Assignee: SUN PATENT TRUST
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A communication method comprising:
transmitting first downlink resource allocation information for a first downlink component carrier;
transmitting second downlink resource allocation information for a second downlink component carrier, which is different from the first downlink component carrier;
transmitting first downlink data on the first downlink component carrier in accordance with the first downlink resource allocation information;
transmitting second downlink data on the second downlink component carrier in accordance with the second downlink resource allocation information;
transmitting uplink resource allocation information for an uplink component carrier on one downlink component carrier out of the first downlink component carrier and the second downlink component carrier;
receiving uplink data on the uplink component carriers in accordance with the uplink resource allocation information; and
transmitting an Acknowledgement/Negative-acknowledgement (ACK/NACK) signal for the uplink data in a physical hybrid-ARQ indicator channel (PHICH) only on said one downlink component carrier on which the uplink resource allocation information is transmitted, and a resource of the PHICH being determined based on the uplink resource allocation information.