| 摘要 |
PROBLEM TO BE SOLVED: To improve utilization efficiency of a frequency, in a communication system for performing communication by a multicarrier transmission system between a plurality of communication devices.SOLUTION: By dividing the entire frequency band allocated to the communication system into a plurality of frequency bands (band 1 to band 4, for instance) of respective fixed band width and transmitting usage frequency band information using a specific band (band 1, for instance) among the divided bands, allocation of the remaining bands (band 2 to band 4) to be used between communication devices is determined. In this case, the specific band is a main band for additionally transmitting data channel information in addition to control channel information including the usage frequency band information, and an extension band for transmitting further data channel information can be added to the main band. Further, for the main band and the extension band, the frequency band to be used can be changed or the number of the frequency bands can be increased or decreased with the passage of time. |
