When a request is submitted from a base station (2) to a radio network controller (1) for S-CPICH for use as a phase reference, the S-CPICH are set in the radio network controller (1) in accordance with the request from the base station (2) and the set S-CPICH are reported to the base station (2) and mobile stations (3). In the base station (2), the antenna beams of the S-CPICH that were reported from the radio network controller (1) are used to transmit and receive data, and in the mobile stations (3), the S-CPICH that were reported from the radio network controller (1) are used as a phase reference to demodulate data that are transmitted in from the base station (2).