Patent ID: 7957346

Claim:
A wireless communication apparatus for performing a first wireless communication with a first channel having a first bandwidth, and a second wireless communication with a second channel having a second bandwidth wider than the first bandwidth and having a frequency band covering the first channel, in accordance with CSMA/CA system by a carrier sense, comprising: a medium access control (MAC) unit; a predicting unit configured to predict a first time required until a transmission right for the first wireless communication is captured, and a second time required until a transmission right for the second wireless communication is captured, respectively; a judging unit configured to judge that either one of the first wireless communication and the second wireless communication is recommended based upon (1) a throughput of the first wireless communication and a throughput of the second wireless communication and (2) the first time and the second time which are predicted by the predicting unit, wherein the judging unit judges to recommend the first bandwidth is employed in either one among a first case, a second case and a third case, wherein the first case is that the predicted first time is smaller than a first threshold value, and the predicted second time is larger than a second threshold value, wherein the second case that a ratio of the predicted second time with respect to the predicted first time is larger than a third threshold value, and wherein the third case that time obtained by subtracting the predicted first time from the predicted second time is larger than a fourth threshold value; and a producing unit producing, when the judging unit judges that a wireless communication different from a present wireless communication is recommended, a notification frame including information indicative of the recommended wireless communication, wherein the produced notification frame is transmitted.