COMMUNICATION DEVICE AND COMMUNICATION CONTROL METHOD

摘要

A plurality of consecutive frequency bands are used as a broadband and use efficiency thereof is improved. An available-frequency-band-information-list is retained such that the list is categorized into frequency-band-groups, each of the groups is a series of consecutive frequency bands, and a frequency-band-number-width is given to each of the groups. Determining a necessary-frequency-band-number, one group is selected from the groups whose width match the number as a first-type band group, when any of the width of each of the groups does not match the number, one group is selected from the groups whose width are next larger than the number as a frequency band group to be used, and a series of consecutive frequency bands corresponding to the number is selected from the frequency band group to be used as a second-type band group. Communication is controlled so as to use the first-type or the second-type band group.

主权项

1. A communication device having a communication function unit, the communication device comprising:
a storing unit configured to store and retain an available frequency band information list indicating available frequency bands such that the available frequency bands listed in the list are categorized into frequency band groups, each of the groups can be seen as a series of consecutive frequency bands, and a number of frequency bands included in each of the frequency band groups is given to each of the frequency band groups as a frequency band number width; a determining unit configured to, based on specifications of a communication to be performed, determine a number of frequency bands according to a bandwidth necessary for the communication as a necessary frequency band number; a first selecting unit configured to select one frequency band group from among the frequency band groups whose frequency band number width match the necessary frequency band number listed in the available frequency band information list, as a first-type use frequency band group being a frequency band group to be used; a second selecting unit configured to, when any of the frequency band number width of the each of the frequency band groups in the available frequency band information list does not match the necessary frequency band number, select one frequency band group from among the frequency band groups whose frequency band number width are larger than and next close to the necessary frequency band number listed in the available frequency band information list, as a frequency band group containing a frequency band to be used; a third selecting unit configured to select a series of consecutive frequency bands corresponding to the necessary frequency band number from among the frequency band group containing the frequency band to be used as a second-type use frequency band group; and a controlling unit configured to control the communication function unit so as to perform the communication using the first-type use frequency band group or the second-type use frequency band group.