Patent ID: 8239483
Filing Date: 2012-08-07
Classification: H04L

Abstract:
1. A method for determining the location of a target device, comprising the steps of: (a) receiving a location request for a target device; (b) determining a plurality of parameters that identify the target device; (c) selecting a most likely path from a plurality of paths using circuitry in a Location Information Server (LIS) to produce a location of the target device, each path defined by a plurality of location measurements, at least one of the plural location measurements having one or more of the plural determined parameters as an input and one or more measurement results as an output and a second of the plural location measurements having the one or more measurement results as an input and additional measurement results as an output; (d) collecting measurement information on the most likely path as a function of one or more of the determined parameters to provide the one or more measurement results; (e) deriving location information for the target device as a function of the one or more measurement results and the additional measurement results, the derivation utilizing a location determination function that evaluates ones of the plural paths; (f) iteratively repeating steps (c) through (e) to collect a predetermined amount of measurement information; and (g) determining an estimated location of the target device as a function of the respective location information for the selected path, wherein the step of selecting a most likely path further comprises selecting a most likely path having the fewest number of measurement results.