Patent ID: 6879840
Filing Date: 2005-04-12
Classification: H04L,H04W

Abstract:
1. A method of rate and power control in a communication system comprising: assigning a target channel condition metric to be met at a first communication terminal for signaling received from each of one or more remote communication terminals of the communication system, each communication terminal supporting a plurality of rates and a plurality of transmit power levels, each target channel condition metric based upon the type of service supported by each of the one or more remote communication terminals; receiving a signal at the first communication terminal from each of the one or more remote communication terminals; adjusting a respective target channel condition metric assigned for a respective one of the one or more remote communication terminals in response to signal information generated from the received signal from the respective one of the one or more remote communication terminals; and determining a respective transmit power level and a respective rate that will satisfy the target channel condition metric for each of the one or more remote communication terminals, the respective transmit power and the respective rate to be used by a respective one of the one or more remote communication terminals for a respective subsequent signal to be transmitted from the respective one of the one or more remote communication terminals to the first communication terminal; wherein a respective signal received from a respective one of the one or more remote communication terminals was transmitted using a respective one of the plurality of rates and wherein the respective rate that satisfies a respective target channel condition metric comprises a different one of the plurality of rates, the method further comprising: measuring a channel condition metric corresponding to each received signal; and setting the respective rate to the respective one of the plurality of rates rather than the different one of the plurality of rates, in the event the measured channel condition metric for the respective received signal is within a hysteresis threshold of the target channel condition metric and in the event the system has been transmitting using the respective one of the plurality of rates for less than a specified number of iterations of the receiving and determining steps.