Patent ID: 7158490
Filing Date: 2007-01-02
Classification: H04W

Abstract:
1. Closed loop power control apparatus for a communication system having a sending station and a receiving station, the sending station for sending a communication signal upon a communication channel, to the receiving station, the communication channel susceptible to fading and the sending station and the receiving station positioned in a closed-loop power-control feedback control arrangement, said closed loop power control apparatus for selectively controlling power levels of the communication signal sent by the sending station, said power control apparatus comprising: a determiner embodied at the receiving station and coupled to receive indications of the communication signal, once transmitted upon the communication channel and received at the receiving station and to receive indications of power control change indications previously sent to the sending station, the determiner for determining, at least when fading exhibited by the communication channel upon which the communication signal is beyond a selected threshold, the fading exhibited by the communication channel determined to be beyond the selected threshold when a selected number of successive power control change indications request increase in the power levels of the communication signal; and a power controller also embodied at the receiving station and coupled to receive indications of determinations made by said determiner, said power controller for selectively providing power control change indications of levels responsive to determinations made by said determiner to the sending station, the power control change indications forming requests requesting an increase, or decrease, in power levels of the communication signal when subsequently sent by the sending station upon the communication channel, the power control change indications of levels that request the power levels of the communication signal, subsequently to be sent by the sending station, not to be increased if the determiner determines the fading of the communication signal to be beyond the selected threshold.