| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce complexity of scheduling of a base station device by properly configuring spaces for searching a downlink control channel. <P>SOLUTION: A mobile station device receives a downlink control channel, which is for a plurality of component carriers, in a first component carrier having a preset frequency bandwidth. The device includes a control part which: configures search spaces, each of which is a space consisting of a plurality of control channel elements using which the downlink control channel is decoded, for a plurality of component carriers; and configures offsets, each of which is a difference of numbers between the control channel elements with the smallest numbers among the control channel elements constituting the individual search spaces, based on the number of the control channel elements in the first component carrier and the number of the component carriers in each of which the corresponding search space is disposed. The device further includes a reception part decoding the downlink control channel for its own device in the plural search spaces configured by the control part. <P>COPYRIGHT: (C)2012,JPO&INPIT |
