Patent ID: 8923772
Filing Date: 2014-12-30
Classification: H04B,H04W

Abstract:
1. A transmission power control method for a target base station belonging to a target cell in a multi-cell environment, the transmission power control method comprising: calculating transmission power for the target base station by generating a transmit beamforming vector that achieves a limited amount of allocated transmission power transmitted by the target base station while still achieving minimum target ratios with respect to terminals served by the target base station; determining to increase the transmission power of the target base station in cooperation with a neighboring base station belonging to a neighboring cell; and increasing the transmission power to the terminals served by the target base station in cooperation with the neighboring base station by sharing information with the neighboring base station, wherein the calculating of the transmission power and the increasing of the transmission power are repeatedly performed after achieving the minimum target ratios of the terminals to increase the ratios of the terminals to more optimal ratios using surplus power resulting from the limited amount of allocated transmission power of the target base station being greater than the minimum target ratios of the terminals.