Patents by Inventor Karen L. Hilton

Karen L. Hilton 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).

  • Arrangement for providing a call hand-off for a mobile station from a land-line supported private base station to a cellular base station operating in a cellular system
    Patent number: 5913166
    Abstract: A private wireless system is configured for providing a call hand-off capability for a mobile station communicating with a private base station operating in the wireless system. The call in the wireless system is handed off to the public cellular system whenever the mobile station is moved near the fringe of the coverage area provided by the private base station. Once the hand-off is initiated in the private base station, a process is executed in which the private base station and a local exchange carrier cooperatively switch an active call from an existing wireless communications path established between the private base station and the mobile station to a newly created wireless communications path established between the mobile station and a public base station in the cellular system.
    Type: Grant
    Filed: December 29, 1995
    Date of Patent: June 15, 1999
    Assignee: Lucent Technologies Inc.
    Inventors: Anthony Buttitta, Karen L. Hilton, Muzibul H. Khan