Patent ID: 8396498
Filing Date: 2013-03-12
Classification: H04W

Abstract:
1. A transmitting station for transmitting a second radio communication system signal to a receiving station in a second radio communication system, using a shared frequency band which a first radio communication system uses in priority to the second radio communication system, comprising: an acquisition section that acquires load information of the first radio communication system; a transmission determining section that estimates, based on the load information acquired in the acquisition section, an allowable interference level margin defined by a difference between an allowable interference level of a first radio communication system signal transmitted using the shared frequency band and a current interference level of the first radio communication system signal, and determines whether transmission of the second radio communication system signal using the shared frequency band is possible or not, based on whether or not the estimated allowable interference level margin is a predetermined value or more; a predicted interference power calculating section that calculates predicted interference power caused in a receiving station in the first radio communication system by the second radio communication system signal transmitted using the shared frequency band; and a broadcast section that broadcasts the predicted interference power calculated in the predicted interference power calculating section to the first radio communication system.