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

摘要

In the environment of a communication area (5) including a SDM-compatible mobile station (2) for space division multiplex transmission and a SDM-uncompatible mobile station (3) not compatible with space division 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 space division multiplex transmission (SDM) and space division multiplex access (SDMA) by using a predetermined space division multiplex transmission evaluation criterion and a space division multi access evaluation criterion. 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.