Patent ID: 6137993
Filing Date: 2000-10-24
Classification: H04W

Abstract:
A method of estimating a statistical measurement of the path loss in a radio communications system that includes at least one primary radio station and at least one secondary radio station (MS1-MS6), said primary and secondary radio stations including transmitters and receivers that communicate with one another over downlink radio channels in a direction from the primary stations to the secondary radio stations, and over uplink radio channels in a direction from the secondary radio stations to the primary radio stations, wherewith respective pairs of uplink and downlink radio channels form a connection between a primary and a secondary radio station, and wherewith the connections are subjected to path loss and interference, the method comprising the steps of:a) selecting at least one of the radio channels;b) determining the power levels (p.sub.iy,t) transmitted from those transmitters that transmit on the radio channel;c) measuring the power level (s.sub.xy,t) received on the radio channel in a plurality of receivers;d) identifying the primary radio stations to which the transmitters and the receivers belong;e) generating an estimated value of a statistical measurement (G.sup.r.sub.ax,t) of a stochastically distributed amplification factor (G.sub.ax,t) for each pair-wise combination of the transmitters and the receivers in dependence on the transmitted power levels (p.sub.iy,t) determined in b) and the power levels (s.sub.xy,t) measured in c), the respective values being stored as an observation of the statistical measurement of the amplification factor (G.sup.r.sub.ax,t ; 0<G.sup.r.sub.ax,t <1) of pair-wise combinations of primary radio stations.