Patent ID: 8447241

Claim:
A wireless communication apparatus, comprising: a channel allocating unit which allocates and stores a plurality of frequency channels in a plurality of frequency bands, comprising at least three frequency bands, to a usual-use channel group and a waiting channel group, respectively; a wireless transceiver which conducts communication with another wireless communication apparatus using one of channels allocated to the usual-use channel group by the channel allocating unit; a channel replacement unit which replaces the channel being used with a channel in the waiting channel group which belongs to a second band of the plurality of frequency bands other than a first band of the plurality of frequency bands to which the channel being used belongs; and a reception electric field intensity measuring unit which measures a reception electric field intensity of a channel of another band of the plurality of frequency bands other than the first band, wherein the channel replacement unit selects among the at least three frequency bands to select the second band of the plurality of frequency bands based on a wavelength of each frequency band of the plurality of frequency bands, wherein the channel replacement unit replaces the channel being used, based on the reception electric field intensity measured by the reception electric field intensity measuring unit.