Patents by Inventor Christophe J. Vidal

Christophe J. Vidal 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 of controlling handover in a multicellular radio communications network, and speed estimation methods relating thereto
    Patent number: 5913168
    Abstract: In a multicellular radio communications network, when a mobile station satisfies a criterion for automatic intercellular handover from a source cell to a target cell, the speed of movement of the mobile station with respect to the base station of the target cell is estimated on the basis of the measured levels of the signal which the mobile station has received from this base station before the handover criterion is satisfied. Depending on the layers of the cells concerned, it is then possible to take account of this speed estimate in order to decide whether or not to trigger intercellular handovers.
    Type: Grant
    Filed: June 13, 1996
    Date of Patent: June 15, 1999
    Assignee: France Telecom
    Inventors: Christophe Moreau, Jean-Fran.cedilla.ois Minet, Christophe J. Vidal