Patent ID: 8730891

Claim:
A radio communication apparatus comprising: a reception section that receives resource assignment information indicating whether or not a resource is assigned for each of a plurality of groups obtained by dividing a system band; a setting section that sets a number of assignment resource blocks to use in an actual transmission band corresponding to a number of notified resource blocks through the resource assignment information into a number of resource blocks which can be represented by any of “2^n×3^m×5^l” (n, m and l are integers of zero or more), if the number of notified resource blocks cannot be represented by “2^n×3^m×5^l”; and a selecting section that selects an assignment resource block to use in the actual transmission band based on the resource assignment information and the number of assignment resource blocks, wherein, when the number of notified resource blocks is different and the number of assignment resource blocks is the same, the selecting section sets a combination of the assignment resource blocks to be a different combination depending on the number of notified resource blocks.