Patents Represented by Attorney, Agent or Law Firm Federico Fraccarol
  • Patent number: 6282426
    Abstract: Apparatus, and an associated method, for determining the geographical positioning of a wireless communication station when the wireless communication station is operated in a non-ideal propagation environment. Errors introduced by NLOS conditions in a determination of a position of the wireless communication station calculated by way of a trilateration technique are corrected. If too few signals are received at the wireless communication station to permit a determination of its position using a ray tracing pattern recognition technique, an estimate of the position of the wireless communication station is also determinable. When implemented in a cellular communication system, accurate position determinations are made even when the mobile station is operated in a non-ideal propagation environment, such as an urban area.
    Type: Grant
    Filed: June 8, 1999
    Date of Patent: August 28, 2001
    Assignee: Nokia Mobile Phones Limited
    Inventor: Shu-Shaw Wang