RADIO COMMUNICATION METHOD, RADIO COMMUNICATION DEVICE, RADIO COMMUNICATION PROGRAM, AND RADIO COMMUNICATION SYSTEM

摘要

In cooperative sensing in which a plurality of cognitive radio apparatus collaboratively exchange sensing information on a status of frequency band usage as a secondary system, the sensing information is efficiently exchanged in the secondary system without influencing communication of the primary system. In a radio communication system according to this invention, a first radio communication device includes means for observing a surrounding radio communication environment, means for converting information obtained by the observation into a parameter used for radio communication, and means for performing transmission by using the parameter, and a second radio communication device includes means for receiving a signal transmitted from the first radio communication device and means for extracting, from the received signal, information on the surrounding radio communication environment that is observed on a transmission side.