Patent ID: 8378888
Filing Date: 2013-02-19
Classification: G01S,H04W

Abstract:
1. A method for determining the location of a mobile device comprising the steps of: (a) transmitting at least one of a location request, a first frequency range, a first sampling duration, a first sampling rate, a first sampling resolution, and a time synchronization from a location determining system to a mobile device; (b) receiving at the mobile device a plurality of signals from a plurality of radio frequency (“RF”) sources; (c) time stamping the plural signals at the mobile device; (d) transmitting the time stamped signals from the mobile device to the location determining system; (e) determining the location of the mobile device at the location determining system as a function of the time stamped signals; and (f) transmitting at least one of a second frequency range, second sampling duration, second sampling rate, and second sampling resolution from the location determining system to the mobile device if the sampling duration provided an insufficient number of plural signals or if plural signals from another RF source is required, wherein the location determining system is a mobile location center (“MLC”) or a location information server (“LIS”).