| 摘要 |
PROBLEM TO BE SOLVED: To efficiently determine an uplink resource which is used by a mobile station device to transmit the information representing ACK/NACK for a plurality of downlink transport blocks.SOLUTION: The mobile station device includes means which, if a downlink transmission mode capable of transmitting one downlink transport block using one physical downlink common channel is set by a base station device for a serving cell, determines one physical uplink control channel resource for transmission of one physical downlink common channel. It further includes means which, if a downlink transmission mode capable of transmitting up to two downlink transport blocks using one physical downlink common channel is set by the base station device for a serving cell, determines two physical uplink control channel resources for the transmission of one physical downlink common channel. |
