Patents by Inventor Shahram Ghaheri-Niri

Shahram Ghaheri-Niri 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).

  • Mobile positioning using intergrated ad-hoc network
    Patent number: 7231216
    Abstract: A mobile station positioning method for a cellular communications system includes evaluating an initial position estimate of a target mobile station having an initial area of uncertainty, evaluating a position estimate of a further mobile station of the system, estimating distance between the target and further mobile stations and using the position and distance estimates to evaluate a new position estimate of the target mobile station having a reduced area of uncertainty. Bi-circular and tri-circular methods are described.
    Type: Grant
    Filed: December 5, 2001
    Date of Patent: June 12, 2007
    Assignee: University of Surrey
    Inventors: Rahim Tafazolli, Shahram Ghaheri-Niri, Jung Houn Yap
  • Mobile positioning using intergrated ad-hoc network
    Publication number: 20050075111
    Abstract: A mobile station positioning method for a cellular communications system includes evaluating an initial position estimate of a target mobile station having an initial area of uncertainty, evaluating a position estimate of a further mobile station of the system, estimating distance between the target and further mobile stations and using the position and distance estimates to evaluate a new position estimate of the target mobile station having a reduced area of uncertainty. Bi-circular and tri-circular methods are described.
    Type: Application
    Filed: December 5, 2001
    Publication date: April 7, 2005
    Applicant: University of Surrey
    Inventors: Rahim Tafazolli, Shahram Ghaheri-Niri, Jung Yap
  • Method of performing soft handover in a mobile communications system
    Publication number: 20040058680
    Abstract: A method of performing soft handover in a mobile communications system includes the steps of estimating a value of signal strengthfor the next sampling period and basing at least one threshold onthat value.
    Type: Application
    Filed: September 12, 2003
    Publication date: March 25, 2004
    Inventors: Xinjie Yang, Shahram Ghaheri-Niri, Rahim Tafazolli