Patent ID: 6725055
Filing Date: 2004-04-20
Classification: H04B,H04W

Abstract:
In a communication system provided with a first unit disposed to transmit signals which comprise pilot and data symbol blocks in each of a succession of time slots, and further provided with a remotely located second unit disposed to receive said transmitted signals, a method for estimating the SIR of said transmitted signals at said receiving second unit, said method comprising the steps of:receiving the signals of a specified one of said slots, as well as the signals of the slot immediately preceding said specified slot in said succession, at said second unit; computing the delay time of power control commands respectively sent from said second unit to said first unit, to adjust the transmission power level thereof; estimating the SIR of signals of said specified slot from the pilot block of said specified slot and from the data block of said immediately preceding slot, collectively; and incorporating a component into said SIR estimate which compensates for a power change between said specified slot and said immediately preceding slot, said compensating component being determined from said delay time.