Patent ID: 8265675

Claim:
A wireless communication system including a plurality of base stations and at least one mobile station, wherein the plurality of base stations include a unit distributing data addressed to a certain mobile station between two or more base stations selected from a group of base stations that can simultaneously communicate with the certain mobile station if a predetermined data rate cannot be obtained by data communication between the certain mobile station and a single base station, and simultaneously transmitting the distributed data from the respective base stations to the certain mobile station by a MIMO (Multi-Input Multi-Output) transmission method, the distributed data being different from the respective base stations; the at least one mobile station includes a plurality of antennas and a unit receiving the data transmitted from the selected base stations by the MIMO transmission method, by a MIMO reception method using the plurality of antennas, and performs data communication only with a single base station by a non-MIMO transmission or reception method if the predetermined data rate can be obtained by the data communication between the certain mobile station and the single base station; and the selection of base stations is carried out by: measuring transmission line quality between the mobile station and each of peripheral base stations; notifying the base stations of the measured transmission line quality; receiving communicable data rates from the base stations; rearranging the received data rates in a descending order; if a maximum data rate among the received data rates is higher than a predetermined data rate, deciding to select the base station communicable at the maximum data rate; if the maximum data rate is not higher, calculating the number k of base stations satisfying that a sum of data rates of top k base stations in descending order is higher than the predetermined data rate; if the calculated number k exceeds a number N of MIMO antennas owned by the mobile station, deciding to select top N base stations; and if the calculated number k does not exceed the number N, deciding to select top k base stations.