Patent ID: 7155162

Claim:
A wireless base station that transfers a plurality of mobile stations from control channels to communication channels and wirelessly connects the plurality of mobile stations by spatial multiplexing using an array antenna via the communication channels, comprising: detection means for detecting a deviation of a signal that has been received from a mobile station, the deviation being at least one of (a) a timing offset that indicates a deviation of a timing at which the signal was received via a control channel from the mobile station in a periodical reception timeslot of the wireless base station, from a specific timing in the periodical reception timeslot being set as a reference, and (b) a frequency offset that indicates a deviation of a frequency of a carrier wave allocated to the mobile station, from a frequency of the signal that has been received via a control channel from the mobile station; and separation means for, using the detected deviation; (a) correcting reception signals that have been received from the mobile stations and (b) separating a signal intended for the mobile station from the corrected reception signals via a communication channel, when new wireless connection to the mobile station is performed by forming an antenna directivity.