Mobile station position estimation scheme for cellular mobile communication system
March 13, 2018. 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 References 3646580 Method and apparatus for location finding in a CDMA system Position location system and method Mobile station position determination in a wireless communication system Method and apparatus for mobile emitter location Method and system for determining position of a cellular mobile terminal Geographical location system and method for locating radiotelephone engaged in a call Patent #: 6026305 InventorsAssigneeApplicationNo. 041764 filed on 03/13/1998US Classes:455/456.2, Based on request signal455/457Location displayExaminersPrimary: Hunter, Daniel S.Assistant: Woldetatios, Yemane Attorney, Agent or FirmInternational ClassH04Q 007/20Foreign Application Priority Data1997-03-14 JPAbstractA mobile station position estimation scheme for a cellular mobile communication system which is capable of estimating a position of a mobile station in a simple manner even in the general cellular mobile communication systems in which base stations are not synchronized. According to this mobile station position estimation scheme, a first signal sequence and a second signal sequence which are uniquely predetermined for the mobile station are exchanged between the mobile station and the base station, and then a position of the mobile station is estimated at one station among the base station and the mobile station, by obtaining a phase difference between the first signal sequence and the second signal sequence and calculating an estimated distance between the base station and the mobile station according to the phase difference. | |
