Patent ID: 8705480

Claim:
A communications system for exchange of information between a base station and a terminal by a multicarrier transmission mode using a plurality of subcarriers, the communications system comprising: a base station comprising a transmission data generator configured to generate dedicated frequency band information indicating which frequency band is to be used for transmission of dedicated data information between the base station and a terminal; and a transmitter configured to transmit the dedicated frequency band information by using a specific frequency band which is set from among a plurality of frequency bands assigned to the communications system, and to transmit dedicated data information by using at least one frequency band which is set from among said plurality of frequency bands; and a terminal comprising: a receiver configured to receive the frequency band information by using the specific frequency band, wherein bandwidths of the plurality of frequency bands assigned to the communications system are made a predetermined value, and also numbers of subcarriers in each of the plurality of frequency bands assigned to the communications system are made a predetermined value.