Fujitsu Corporation

Norio Tomiyoshi

Hideki Matsuoka

Osamu Yamano

Yoshinobu Haga

Takushi Mikami

A disclosed wireless base station forms a cell adjacent to an adjacent cell formed by an adjacent wireless base station in a mobile communication system. A notification unit notifies time difference information into the cell formed by the wireless base station itself. The time difference information indicates a difference between a predetermined frame transmitted from the wireless base station itself and an adjacent predetermined frame transmitted from the adjacent wireless base station.

Wireless base station and mobile station

Signals from antennas A and B are alternately switched by an antenna switch at a predetermined rate. Then, the signals from the antennas A and B are alternately input to a wireless receiving unit. The wireless receiving unit orthogonal-signal-detects the signals received by the antennas A and B, and inputs the detected signals to a branch selecting unit. The branch selecting unit extracts only the signals from either of the antennas from the signals obtained from the antennas A and B, which are alternately arranged in time series, and transmits the extracted signals to a matched filter. A searcher obtains despreading timings from correlation values, and stores the obtained timings in two memories. The searcher obtains despreading timings with large correlation values, and transmits the timings to a despreading unit to perform RAKE reception.

Growing community of inventors

Kawasaki, Japan

Norio Tomiyoshi