Patent ID: 6031831
Filing Date: 2000-02-29
Classification: H04B,H04W

Abstract:
A method of determining current channel state information in a radio communications system in order to optimize a transmission of an information signal, wherein the radio communications system includes a first communications unit and a second communications unit, the method comprising the steps of:transmitting a channel sounding packet from the first communications unit to the second communications unit a time period, t, prior to transmission of the information signal by the second communications unit to the first communications unit;receiving the channel sounding packet at the second communications unit;processing the channel sounding packet at the second communications unit to determine at least one communication channel characteristic;optimizing at least one communication parameter of the information signal based on the at least one communication channel characteristic; andtransmitting the optimized information signal from the second communications unit to the first communications unit wherein the information signal includes information indicating the at least one communication parameter that has been optimized by the second communications unit.