Patents by Inventor Siegfried Steiger

Siegfried Steiger 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).

  • Method and apparatus for identifying and tracking target subscribers in a universal mobile telephone system
    Patent number: 7471944
    Abstract: A method is provided for tracking a mobile device in a wireless communications system. The method comprises establishing communications between the mobile device and a masquerading base station with the mobile device operating in a first mode, such as UMTS. The mobile device is urged to operate in a second mode such as GMS, and the mobile device is then tracked in the second mode of operation.
    Type: Grant
    Filed: July 6, 2005
    Date of Patent: December 30, 2008
    Assignee: Alcatel - Lucent USA Inc.
    Inventors: Karl-Heinz Gabler, Siegfried Steiger
  • Method and apparatus for identifying and tracking target subscribers in a universal mobile telephone system
    Publication number: 20070010240
    Abstract: A method is provided for tracking a mobile device in a wireless communications system. The method comprises establishing communications between the mobile device and a masquerading base station with the mobile device operating in a first mode, such as UMTS. The mobile device is urged to operate in a second mode such as GMS, and the mobile device is then tracked in the second mode of operation.
    Type: Application
    Filed: July 6, 2005
    Publication date: January 11, 2007
    Inventors: Karl-Heinz Gabler, Siegfried Steiger