Patent ID: 6597724
Filing Date: 2003-07-22
Classification: H04W

Abstract:
An outer loop/weighted open loop method for controlling transmission power levels at a user equipment employing a spread spectrum time division duplex technique having frames with time slots, comprising:a) receiving, during a first time slot, a communication including a power level; b) measuring a power level of said received communication; c) determining a path loss estimate based in part on the measured power level and the received power level; and d) setting a transmission power level for transmission during a second time slot based in part on the path loss estimate weighted by a first factor and a long term path loss estimate weighted by a second factor, wherein the first and second factors are a function of a time separation of the first and second time slots; and e) determining a quality, &agr;, of the path loss estimate based in part on a number of time slots, D, between the first and second time slot; and wherein the first factor is &agr; and the second factor is 1âˆ’&agr;.