Patent ID: 8355360
Filing Date: 2013-01-15
Classification: H04W

Abstract:
1. A method for providing channel quality feedback in an Orthogonal Frequency Division Multiplexing communication system wherein a frequency bandwidth is divided into a plurality of sub-bands, the method comprising: receiving, by a access network element, a mean channel quality metric and one or more of a standard deviation and a variance of the channel quality metric from a mobile station; and allocating, by the access network element, a transmit power for a downlink transmission to the mobile station based on the received mean channel quality metric and the one or more of the standard deviation and the variance of the channel quality metric wherein allocating the transmit power for a downlink transmission including (a) calculating a desired channel quality metric value based on a predetermined modulation and coding rate and the received mean channel quality metric and the one or more of the standard deviation and the variance of the channel quality metric (b) determining, based on the predetermined modulation and coding rates and the received mean channel quality metric and the one or more of the standard deviation and a variance of the channel quality metric, a transmit power needed to achieve the desired channel quality metric value wherein the transmit power is determined based on the following equation, wherein P tx represents the transmit power, SNR effective represents the desired channel quality metric, m and β are gamma distribution parameters, and γ represents the mean channel quality metric.