Patent ID: 8787833

Claim:
A radio communication method for transmitting and receiving data between at least two communication apparatuses capable of performing radio communication, wherein a first communication apparatus, among the at least two communication apparatuses, transmits existence confirmation request notices to a second communication apparatus, among the at least two communication apparatuses, separately using a first frequency band and a second frequency band that is a frequency band different from the first frequency band, the second communication apparatus returns existence confirmation response notices as a response to correctly received existence confirmation request notices of the first frequency band and the second frequency band, to the first communication apparatus, using the frequency bands corresponding to the first frequency band and the second frequency band, and, the first communication apparatus, after having received one or more of the existence confirmation response notices transmitted from the second communication apparatus, exchanges data with the second communication apparatus, using the frequency band that corresponds to the existence confirmation response notice transmitted through higher frequency band among the first and second frequency bands, wherein the first communication apparatus adjusts a transmitting power of a radio wave of the second frequency band such that a received power of a radio wave of the first frequency band and that of the radio wave of the second frequency band at the second communication apparatus will be equal to each other.