Patents by Inventor Ann Tien

Ann Tien has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Methods and systems for deriving seed position of a subscriber station in support of unassisted GPS-type position determination in a wireless communication system
    Publication number: 20060217130
    Abstract: In a method and system for deriving a seed position of a subscriber station in a wireless communications system in supporting unassisted GPS-type position determination is provided, the subscriber station receives overhead messages from the wireless communications system, and derives the seed position from the parameter values. The subscriber station may use a data structure in its memory and map possible parameter values to corresponding positions that may serve as the seed positions.
    Type: Application
    Filed: October 5, 2005
    Publication date: September 28, 2006
    Inventors: Douglas Rowitch, Chang Row, Ann Tien, Sanjeev Khushu