Patent ID: 8315569
Filing Date: 2012-11-20
Classification: H04B,H04W

Abstract:
1. A controller for controlling transmission availability for a radio station in a radio communication system, comprising: an information acquisition unit configured to acquire radio communication state information on another radio station different from the radio station via a backbone network connected to the radio station and the other radio station, the radio communication state information including frequency information indicative of a frequency band used by the other radio station and waveform feature information indicative of a waveform feature of a radio signal transmitted from the other radio station, the waveform feature including cyclostationarity derived from second order periodic autocorrelations, variances of signal amplitudes or frequency correlations; a waveform information extraction unit configured to receive a radio signal and calculate a waveform feature based on the waveform feature information, the waveform feature indicating whether the received radio signal includes the radio signal transmitted from the other radio station; and a radio resource parameter determination unit configured to determine whether signal transmission from the radio station is available by comparing a waveform feature threshold with the waveform feature calculated by the waveform information extraction unit and specify a radio resource to be used for the signal transmission based on the frequency information, the waveform feature information and/or the calculated waveform feature.