Patent ID: 9686047
Date: 2017-06-20
CPC Classifications: H04L,H04W

Claim:
1. A wireless communication method used for a mobile station apparatus configured to communicate with a base station apparatus using a plurality of downlink component carriers and a plurality of uplink component carriers, the wireless communication method comprising: receiving a first command indicating deactivating a first downlink component carrier; deactivating the first downlink component carrier in response to the first command; in response to the first command, flushing HARQ buffers of only a first uplink component carrier of the plurality of uplink component carriers, the first uplink component carrier being associated with the first downlink component carrier deactivated; and in a case that the first command is received after a first uplink grant indicating transmission or retransmission of a physical uplink shared channel (PUSCH) on the first uplink component carrier is received on the first downlink component carrier, and the mobile station apparatus is notified, before the transmission or the retransmission of the PUSCH is performed, from the base station apparatus by the first command not to use the first downlink component carrier for downlink communication, flushing the HARQ buffers after performing the transmission or the retransmission of the PUSCH.