Patent ID: 8208491

Claim:
A base station apparatus using a plurality of Physical Resource Blocks (PRBs), into which a plurality of subcarriers consecutive in a frequency domain are divided, the plurality of PRBs being grouped into a plurality of resource block groups (RBGs), each of which is a set of a predetermined number of consecutive PRBs, the base station apparatus comprising: an allocating unit configured to perform first allocation in which Distributed Virtual Resource Blocks (DVRBs) with the same DVRB number are allocated to a mobile station, the DVRBs with the same DVRB number being mapped to two of the PRBs with a predetermined gap therebetween; and a transmitting unit configured to transmit data using the PRBs, wherein: the predetermined gap is associated with both the predetermined number that is a number of the consecutive PRBs forming one of the RBGs and a system bandwidth; the predetermined gap is an integer multiple of the predetermined number; the PRBs are allocated to a mobile station in second allocation in units of the RBGs; and said allocating unit performs at least one of the first allocation and the second allocation.