Patent ID: 8055198

Claim:
A method to provide uplink interference control in a communication system, the method comprising the steps of: defining at least one modulation product ratio modification parameter; receiving a downlink channel quality indication from a mobile station; selecting an uplink modulation product ratio modification parameter in response to the downlink channel quality indication; modifying an uplink modulation product ratio by the modulation product ratio modification parameter determined by the downlink channel quality indication; mapping the uplink modified modulation product ratio against a table of modulation coding schemes; limiting an uplink modulation coding scheme level to be equal or less than a downlink modulation coding scheme level; and instructing the mobile station to apply the mapped uplink modulation coding scheme; wherein the selecting step includes selecting an uplink modulation product ratio modification parameter MPR max i in response to the downlink channel quality indication: MPR max i =A ·log 2 (1 +B·D info ·SINR i ) where MPR max i is the highest modulation product ratio for the i th mobile station that can allocated by the uplink scheduler, SINR i is Signal-to-Interference-plus-Noise Ratio for the i th mobile station, and A and B are scheduler parameters, and where the modification parameter D info is the modification parameter determined from the defining and selecting steps.