FIG. 12 shows a comparison result of the number of conventional signaling bits and the number of signaling bits in Embodiment 1;

FIG. 13 shows an example operation of frequency resource allocation in Embodiment 2 of the present invention;

FIG. 14 shows an example operation of frequency resource allocation when the notification RBG index is associated with the allocation RBG index in Embodiment 3 of the present invention; and

FIG. 15 shows contiguous band allocation in Embodiment 3 of the present invention.

Hereinafter, the embodiments of the present invention will be described in detail with reference to the drawings.

(Embodiment 1)

A communication system according to the present invention includes radio communication terminal apparatus 100 (hereinafter, simply referred to as a “terminal”) and radio communication base station apparatus 200 (hereinafter, simply referred to as a “base station”). For example, terminal 100 is an LTE-A terminal and base station 200 is an LTE-A base station. Base station 200 determines an allocation resource to be allocated to data transmitted by terminal 100, and notifies terminal 100 of the determined allocation resource information. Terminal 100 allocates data to be transmitted, based on the information of the allocation resource notified by base station 200, and transmits the allocated data to base station 200.