RADIO COMMUNICATION SYSTEM, RADIO COMMUNICATION METHOD, AND RADIO COMMUNICATION DEVICE

摘要

In the environment of a communication area (5) including a spatial multiplex compatible mobile station (2) for spatial multiplex transmission and a spatial multiplex non-compatible mobile station (3) not compatible with spatial multiplex transmission, a base station (1) having a plurality of antennas and capable of adaptively changing directivity performs allocation of a mobile station which simultaneously performs spatial multiplex transmission (SDM) and spatial multiple access (SDMA) by using a predetermined spatial multiplex transmission evaluation reference and a spatial multi access evaluation reference. By using this radio communication method, it is possible to use the spatial degree of freedom at its maximum and provide a radio communication system having an improved communication capacity.