COMMUNICATION CONTROL METHOD AND DEVICE IN MOBILE COMMUNICATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a communication control method and a communication control device based on SDMA(space division multiple access) capable of reducing interference by radio wave beams emitted from respective base stations to a mobile station in a mobile communication system. SOLUTION: In the communication control method when the respective base stations communicate with the mobile station by the same frequency by emitting the radio wave beams from the respective base stations to the mobile station in the mobile communication system of a cellular system in which the radio wave beams can be emitted from the respective base stations in a plurality of directions, the timing of emitting the radio wave beams from the base station is controlled so as to be different from the emission timing of the radio wave beams emitted from the other base station to the direction matched with the direction where the interference by the radio wave beam is estimated.