Patent ID: 8787146
Filing Date: 2014-07-22
Classification: H04L,H04W

Abstract:
1. A wireless communication system wherein signals are transmitted and received between a first radio station and a second radio station, comprising: the first radio station including: a measurer that measures a difference between a reference timing of the first radio station and a reception timing of a signal transmitted from the second radio station; a timing adjustment signal generator that generates a first signal including data on the difference; and a transmitter that transmits the first signal including the data on the difference; and the second radio station including: a signal generator that generates a second signal in a time domain using an orthogonal transformation; a timing adjustment signal extractor that extracts the data on the difference included in the first signal transmitted from the first radio station, as extracted difference data; a transmission timing controller that determines a correction amount of a signal arrangement phase and that of a transmission timing based on the extracted difference data; a phase controller that controls the signal arrangement phase of the second signal in the time domain based on the correction amount of the signal arrangement phase; and a timing adjustor that controls the transmission timing of the second signal in which the signal arrangement phase is controlled based on the correction amount of the transmission timing, and wherein using the controlled transmission timing, the second radio station transmits the second signal to the first radio station.