A reception device, comprising: a receiving unit adapted for a system where a system bandwidth is divided into a plurality of frequency blocks each comprising a plurality of consecutive frequency subcarriers, each of the frequency blocks is divided into multiple sub-blocks in a time domain, and a downlink channel is assigned to a sub-block by a base station, the receiving unit being configured to receive data of the downlink channel mapped to the sub-block; and a processing unit configured to process the data of the downlink channel received by the receiving unit, wherein the receiving unit is adapted for the system where distributed type transmission for assigning the downlink channel of the same reception device to multiple sub-blocks that are distributed 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 one of the distributed type transmission and the localized type transmission is used, characterised in that the receiving unit is configured to receive control information regarding the sub-blocks assigned to the downlink channel at a head part of the plurality of the frequency blocks, wherein the receiving unit is configured to receive the control information including information indicating whether the localized type transmission or the distributed type transmission is applied and consecutive-frequency-block allocation information indicating identification codes indicating locations of frequency blocks assigned to the distributed frequency blocks. a receiving unit adapted for a system where a system bandwidth is divided into a plurality of frequency blocks each comprising a plurality of consecutive frequency subcarriers, each of the frequency blocks is divided into multiple sub-blocks in a time domain, and a downlink channel is assigned to a sub-block by a base station, the receiving unit being configured to receive data of the downlink channel mapped to the sub-block; and a processing unit configured to process the data of the downlink channel received by the receiving unit, wherein the receiving unit is adapted for the system where distributed type transmission for assigning the downlink channel of the same reception device to multiple sub-blocks that are distributed 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 one of the distributed type transmission and the localized type transmission is used, characterised in that the receiving unit is configured to receive control information regarding the sub-blocks assigned to the downlink channel at a head part of the plurality of the frequency blocks, wherein the receiving unit is configured to receive the control information including information indicating whether the localized type transmission or the distributed type transmission is applied and consecutive-frequency-block allocation information indicating identification codes indicating locations of frequency blocks assigned to the distributed frequency blocks.