MOBILE STATION DEVICE, BASE STATION DEVICE, UPSTREAM LINK AND DOWNSTREAM LINK TRANSMISSION METHOD

摘要

The disclosed mobile station apparatus includes a channel quality estimation unit for estimating a channel quality of a downlink based on a reference signal from a base station and outputting an estimation result as channel estimation information, And a transmission acknowledgment information preference unit for preferentially returning the transmission acknowledgment information when the channel estimation information and the transmission acknowledgment information are simultaneously transmitted to the base station do.