Patent ID: 8145237
Filing Date: 2012-03-27
Classification: G01S,H04W

Abstract:
1. A computer-implemented method of locating a mobile communication terminal associated with a mobile radio network covering a geographical area, the method comprising: dividing the geographical area into a plurality of sub-areas; calculating field strengths expected in the sub-areas for antennas located in the geographic area; determining antenna probabilities for the sub-areas based on the expected field strengths, the antenna probabilities indicating for at least some of the antennas the probability that in a respective sub-area the field strength of the corresponding antenna is higher than the field strength of other antennas, and indicating the probability that the mobile communication terminal, located in the respective sub-area, uses the corresponding antenna for at least one of registering or communicating with the mobile radio network; determining the antenna used by the mobile communication terminal; and determining location probabilities for the sub-areas, each location probability indicating the probability that the mobile communication terminal is located in the respective sub-area, based on the antenna probabilities associated with the antenna used by the mobile communication terminal.