Patent ID: 6990428
Filing Date: 2006-01-24
Classification: G01S,H04B,H04W

Abstract:
1. A method comprising: accepting an ideal path loss model applicable to an area of interest; calibrating the ideal path loss model using measurements received from wireless stations of a first set of wireless stations, the measurements measuring the received signal strengths at each respective wireless station of a first set of wireless stations of a wireless network, the stations receiving signals as a result of transmissions by respective wireless stations of a second set of wireless stations of the wireless network, each respective transmission at a known respective transmit power, the locations of each station of the first and second set being known, the calibrating being to determine a calibrated path loss model between the receiving and transmitting wireless stations; Receiving measurements from a particular wireless station of unknown location, the measurements measuring the received signal strengths at the particular wireless station resulting from respective transmissions from at least some of the stations of the second set of wireless stations, said each of the respective transmissions being at a known corresponding transmit power; and determining the likely location or locations of the particular wireless station using the received measurements of the received signal strengths at the particular wireless station and the calibrated path loss model.