Patent ID: 7174172

Claim:
A computing arrangement for determining a location of a wireless communications device, comprising: a processor; a memory arrangement storing a location of each of at least three access points; and a communication arrangement receiving first data, the first data including at least one of first signal strength data and second signal strength data, the first signal strength data being indicative of a strength of a first signal transmitted by the device and received by the at least three access points, the second signal strength data being indicative of a strength of a second signal transmitted by the at least three access points and received by the device, wherein the processor determines a location area of the device as a function of the first data and the location, the location area being an area within a predetermined reception range of the at least three access points, and wherein the processor determines a location of the device within the location area as a function of second data and a further location of each of at least three further access points, the second data being indicative of a travel time of a third signal from the device to each of the at least three further access points.