Patent ID: 8750228

Claim:
A base station apparatus which receives uplink control information from a mobile station apparatus, the base station apparatus comprising: in a case that the mobile station apparatus is enabled to perform a simultaneous transmission on a physical uplink shared channel and a physical uplink control channel in a sub-frame: a receiver configured to receive in a sub-frame, from the mobile station apparatus, channel state information on the physical uplink control channel if the uplink control information consists only of the channel state information; the receiver configured to receive in a sub-frame, from the mobile station apparatus, hybrid automatic repeat request (HARQ) control information on the physical uplink control channel if the uplink control information consists only of the HARQ control information; and the receiver configured to receive in a sub-frame, from the mobile station apparatus, the channel state information on the physical uplink shared channel and the HARQ control information on the physical uplink control channel if the uplink control information consists of the channel state information and the HARQ control information and if a transmission on the physical uplink shared channel is being performed.