Patent ID: 8374162

Claim:
A transmission device comprising: a frequency scheduling unit adapted for a system where a system bandwidth is divided into a plurality of frequency blocks, wherein each of the frequency blocks comprises a plurality of consecutive frequency subcarriers, and wherein each of the frequency blocks is divided into multiple sub-blocks in a time domain, the frequency scheduling unit being configured to assign a downlink channel to one or more sub-blocks using distributed type transmission or localized type transmission, wherein distributed type transmission for assigning the downlink channel of one user to multiple sub-blocks that are distribute across at least two of the frequency blocks and consecutive in the time domain and localized type transmission for assigning the downlink channel to a localized frequency block are defined; and a mapping unit configured to map data of the downlink channel to the sub-blocks assigned by the frequency scheduling unit; a control information generating unit configured to generate control information regarding the sub-blocks assigned by the frequency scheduling unit to the downlink channel; and a transmitting unit configured to transmit control information at a head part of the plurality of the frequency blocks, wherein the control information generating unit generates control information including information indicating whether the localized type transmission or the distributed type transmission is to be performed and allocation information.