Patent ID: 8254966

Claim:
A method of locating a mobile station, the method comprising: providing a first set of calibration data representing measured signal power is obtained at a plurality of locations in a geographical area of a wireless network; providing a second set of data representing predicted signal power; comparing the first set of calibration data to the second set of data; determining at least one function to represent at least one difference between the measured signal power and the predicted signal power; and modifying one or more values of the first set of calibration data based on the at least one function and using the modified first set of calibration data to locate a mobile station, wherein the calibration data representing the plurality of different locations of the geographical area are represented as a data vector containing a plurality of different power level values of a plurality of different neighboring cell stations, where at least one value of said data vector is a dummy value used to represent one of said plurality of neighboring cells, and where the dummy value is incremented to represent a change in power level of the corresponding neighboring cell represented by said dummy value.