Patents Represented by Attorney, Agent or Law Firm Charlie Brown
  • Patent number: 6208292
    Abstract: The present invention is a novel and improved method and apparatus for performing position location in wireless communications system. One embodiment of the invention comprises a method of performing position location in a wireless subscriber unit having a local oscillator, including the steps of receiving a position location request, acquiring a timing signal when a sufficient period of time has elapsed since the local oscillator has been corrected and correcting said local oscillator using a correction signal based on said timing signal, substantially freezing the correction signal, performing a position location procedure using the local oscillator with the correction signal applied, and ending said position location procedure.
    Type: Grant
    Filed: September 9, 1998
    Date of Patent: March 27, 2001
    Assignee: Qualcomm Incorporated
    Inventors: Gilbert C. Sih, Qiuzhen Zou