Transmission weight control method and transmission weight control method selection method in MU-MIMO

摘要

PROBLEM TO BE SOLVED To provide a method of controlling a transmission weight in a multi-base station coordinated MU-MIMO.SOLUTION: In a multiple base station cooperative MU-MIMO system in which two base stations transmit signals to two mobile stations, a transmission weight control method for multiplying a transmission signal by a transmission weight, wherein a first base station Comprising the steps of: receiving channel information as feedback information from a first mobile station, the second base station receiving channel information as feedback information from a second mobile station; two base stations generating respective transmission signals; A step in which each base station generates a transmission weight based on the received channel information, a step in which the first base station receives the transmission signal of the second base station via the inter-base-station transmission path, and the second base station The method comprising the steps of: receiving a transmission signal of a first base station; two base stations each multiplying a transmission signal by a transmission weight; transmitting two transmission signals to which two base stations are respectively transmitting transmission weights .(FIG.