Method and system for estimating a subscriber's location in a cluttered area
September 5, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesVehicle tracking system Vehicle locating and communicating method and apparatus using cellular telephone network Method and system for determining the position of a mobile receiver Positioning system and method Techniques for expeditiously predicting electromagnetic wave propagation Apparatus and method for tracking and reporting the location of a motor vehicle Method and apparatus for determining the location of a mobile telephone Emergency mobile telephone Patent #: 5742666 InventorsAssigneeApplicationNo. 924151 filed on 09/05/1997US Classes:455/456.2, Based on request signal455/457Location displayExaminersPrimary: Maung, NayAttorney, Agent or FirmInternational ClassH04Q 007/20AbstractIn a model of a wireless communication system service area (160), a set of characteristics associated with the reception of a model signal (210) are calculated (308), preferably using ray-tracing techniques, wherein the model signal (172) is transmitted from a selected location (162) to a receiver location (166). Next, a set of characteristics that describe a received signal at a receiver location in the wireless communication system service area are measured (316), wherein the receiver location corresponds to the receiver location in the model (160). Thereafter, a relationship between the calculated set of characteristics and the measured set of characteristics is determined (318), and the location of the subscriber unit that transmitted the received signal is estimated (320) in response to the relationship between the calculated set of characteristics and the measured set of characteristics.Other References
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