Patent ID: 9172576
Filing Date: 2015-10-27
Classification: H04J,H04L,H04W

Abstract:
1. One base station included in a wireless communication system in which a plurality of base stations in synchronization with one another perform communication with communication terminals, wherein each of the plurality of base stations performs communication with a plurality of communication terminals based on a reference timing while sharing a plurality of unit radio resources identified on a time-frequency plane among the plurality of communication terminals, the one base station comprises: a reception unit for receiving a multi-carrier signal in which a plurality of carrier waves being orthogonal to one another are combined; an FFT processing unit for performing an FFT (Fast Fourier Transform) process on the multi-carrier signal received by the reception unit; an interference wave level acquisition unit for obtaining, with respect to each of a plurality of candidate timings for the reference timing, a signal level of an interference wave in a unit radio resource not used by the one base station, based on an output signal of the FFT processing unit; and a reference timing adjustment unit for determining a new timing of the reference timing from the plurality of candidate timings based on the signal level of the interference wave obtained by the interference wave level acquisition unit.