RADIO COMMUNICATION METHOD AND RADIO COMMUNICATION DEVICE

摘要

In a radio communication system set for a plurality of frequency bands such as 5.2 GHz and 2.4 GHz bands, it is possible to transmit large-capacity data reliably and smoothly in real time while eliminating disturbance from another radio communication system or the like and not causing a stop of a moving picture or an image disorder. In the order of the frequency bands (5.2 GHz) capable of communication at a higher transmission rate, in steps 101 to 103, an empty radio channel having no disturbing wave in that frequency band is detected. Under the radio channel detected, a processing routine (200) detects whether the reception electric field intensity at the transmission rate is equal to or above a threshold value, starting from a higher transmission rate. Communication is started at the transmission rate where the reception electric field intensity is equal to or above the threshold value.