Patents by Inventor Evelyn Le Strat

Evelyn Le Strat 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).

  • Multi-bit power control and power control command sub-channel design
    Patent number: 6529741
    Abstract: The invention provides a system and method for controlling transmission power of a mobile unit in a wireless communication system which minimizes transmission power overshoot caused by counteracting the effects of deep fading. Sets of power control bits are transmitted from the base station to the mobile unit using &pgr;/4 DQPSK modulation. A first set of the bits indicates to the mobile unit a request to increase the mobile units transmission power by a predetermined amount. A second set of the bits indicates to the mobile unit that the mobile unit should increase its transmission power by an amount which is greater than the predetermined amount. A third set of the bits indicates to the mobile unit a request to decrease the mobile units transmission power by the predetermined amount. A fourth set of the bits indicates to the mobile unit that the mobile unit should decrease its transmission power by the amount which is greater than the predetermined amount.
    Type: Grant
    Filed: April 16, 1999
    Date of Patent: March 4, 2003
    Assignee: Nortel Networks Ltd.
    Inventors: Wen Tong, Evelyn Le Strat