Patent ID: 8918056
Filing Date: 2014-12-23
Classification: H04B,H04W,Y02D

Abstract:
1. A wireless communication device which performs a wireless communication using a selected one of a plurality of wireless channels obtained by dividing a predetermined frequency band, the device comprising: an electric field intensity table configured to store newest electric field intensities of the wireless channels; a detection unit configured to detect electric field intensities of the wireless channels; a controller configured to (i) select first channels which are selected from among the plurality of wireless channels and of which frequency bands are distributed in frequency bands of the plurality of wireless channels, (ii) detect, by the detection unit, electric field intensities of each of the first channels, (iii) select second channels which are selected from among the plurality of wireless channels and which are different from the first channels, and (iv) estimate electric field intensities of each of the second channels based on the detected electric field intensities of each of the first channels, wherein the controller selects the second channels and estimates the electric field intensities of each of the second channels after having selected the first channels and having detected the electric field intensities of each of the first channels; an update module configured to update the newest electric field intensities of the plurality of wireless channels stored in the electric field intensity table based on the detected electric field intensities of each of the first channels and the estimated electric field intensities of each of the second channels; and a channel changing unit configured to determine whether or not a communication state of a use channel which is a wireless channel currently used for transmission/reception deteriorates, to read the newest electric field intensities of the wireless channels updated and stored in the electric field intensity table when deterioration is determined, and to change the use channel based on the read electric field intensities.