Patent ID: 8665839

Claim:
A wireless base station which transmits data to a mobile station, said wireless base station comprising: a modulator configured to modulate notification of frame information and transmit the notification to a certain mobile station if the certain mobile station requires a measurement of radio signals of a different frequency or of a different system via a shared channel, the frame information enabling identification of wireless frames that do not have a possibility of transmission of packets from the wireless base station to the certain mobile station and at which the certain mobile station is allowed to measure radio signals transmitted from another wireless base station, without receiving data via the shared channel by which data is transmitted to any selected mobile station from said wireless base station, which wireless frames allowing the measurement of the radio signals are variable in a repetition period and an offset value indicated by the frame information; and a scheduler configured to prohibit data transmission to said certain mobile station via said shared channel during said frame indicated by said frame information.