Patent ID: 8447311

Claim:
A radio communications system, comprising: at least one terminal communication unit having one or more antennas that conduct radio communication with a plurality of terminals; at least one baseband modem that generates and decrypts a data signal, wherein the baseband modem divides a radio frequency band used for the radio communication into two or more subbands, generates and decrypts the data signal specific to each of the divided subbands, and allocates the data signal specific to the respective subbands to the terminal communication unit, and wherein the terminal communication unit receives the data signal specific to the respective subbands generated by the baseband modem, and forms a configuration of cells for each of said subbands using the data signal specific to the received subbands and a combination of the antennas, in which the combination of the antennas configuring the cells is changed for each of the subbands; wherein the divided subbands include a first subband for transmitting a control data signal, and a second subband other than the first subband, and wherein the baseband modem allocates the data signal specific to the respective subbands to the terminal communication unit so that the data signal specific to the first subband is common to the respective cells.