| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce the frequency of blind decryption at a mobile station, with no increase in overhead due to notification information. <P>SOLUTION: A radio communication base station device can reduce the frequency of blind decryption at a mobile station, with no increase in overhead due to notification information. In the device, a CCE allocation unit (104) allocates allocation information allocated to PDCCH inputted from modulation units (103-1)-(103-K), to a specific search space corresponding to CCE aggregation size of the PDCCH among a plurality of search spaces. An arrangement unit (108) arranges the allocation information to a downlink resource, which corresponds to the CCE of a specific search space that has been allocated, among downlink resources assured for the PDCCH. Then, a radio transmission unit (111) transmits an OFDM symbol in which the allocation information is arranged to a mobile station from an antenna (112). <P>COPYRIGHT: (C)2012,JPO&INPIT |
