Patent ID: 9276652
Filing Date: 2016-03-01
CPC Classification: H04B,H04L,H04W

Claim Text:
1. A wireless communication system comprising: a first wireless station including a plurality of antenna elements, transmission units corresponding to the plurality of antenna elements, and a transmission directivity control unit that controls transmission directivity of the plurality of antenna elements; and a plurality of second wireless stations each including a reception power measurement unit that measures a reception power, wherein the transmission directivity control unit of the first wireless station determines the transmission directivity of each of the plurality of antenna elements so that a signal does not reach a particular second wireless station among the plurality of second wireless stations, the transmission units generate wireless signals using the transmission directivity, the plurality of antenna elements transmit the generated wireless signals, the reception power measurement unit of the particular second wireless station measures the reception power in a period that is set so that a signal does not reach the particular second wireless station, and estimates the presence or absence of interference, the particular second wireless station transmits the presence or absence of the interference estimated by the reception power measurement unit to the first wireless station, and the first wireless station determines at least one of a modulation scheme, a coding rate, or wireless stations with which transmission and reception are performed simultaneously through spatial multiplexing, and a frequency channel to be used, based on the presence or absence of the interference.