Patent ID: 8665763
Filing Date: 2014-03-04
Classification: H04W

Abstract:
1. A method for controlling downlink transmission power in a wireless communication system, the method comprising: transmitting at least one data to a user equipment using the downlink transmission power; receiving feedback information for the data from the user equipment; and controlling the downlink transmission power using the feedback information, wherein the feedback information comprises ACK/NACK information for the at least one transmitted data and channel quality indicator (CQI) information, the CQI information comprising a CQI wherein the step of the controlling the downlink transmission power comprises: calculating an average CQI value, calculating a Signal to Interference and Noise Ratio (SINR) of the user equipment based on the average CQI value, calculating a target power value based on the SINR of the user equipment, setting the downlink transmission power to the target power value, and controlling the compensated downlink transmission power based on the feedback information, wherein the average CQI value is calculated based on a below equation: where the CQI