Patent ID: 8687566
Filing Date: 2014-04-01
Classification: H04L

Abstract:
1. A method for scheduling a downlink transmission in an Orthogonal Frequency Division Multiplexing communication system the method comprising: receiving, from a mobile station, a channel quality metric associated with a frequency bandwidth; determining a first Modulation and Coding Scheme (MCS) based on the received channel quality metric; determining a product of a modulation order and a coding rate (MPR) value associated with the first MCS; transmitting data utilizing the first MCS; determining whether the transmitted data is acknowledged; based on the determination of whether the transmitted data is acknowledged, adjusting the MPR value to produce an adjusted MPR value and wherein adjusting the MPR comprises adjusting the MPR value downwards when the transmitted data is not acknowledged; adjusting the MPR value upwards when the transmitted data is acknowledged; and wherein the adjustment in the MPR is a fraction of a distance between a currently determined MPR value and a discrete next higher or lower MPR value; and assigning weights to each of the first MCS and a second MCS based on the adjusted MPR value; and based on the assigned weights, selecting one of the first MCS and the second MCS for a subsequent transmission of data to the mobile station.