Patents by Inventor Samuel D. Fernandez

Samuel D. Fernandez 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 performing handoff in a spread-spectrum communication system
    Patent number: 6449305
    Abstract: Handoff from a Code-Division, Multiple Access (CDMA) protocol to an Advanced Mobile Phone Service (AMPS) protocol occurs by comparing a remote unit's (405) phase shift measurement to a threshold (503) and determining a reference CDMA base station (401) from an active set of CDMA base stations (515). Next, corrected phase shifts are calculated for each CDMA base station in the active set (521) and the remote unit (405) is handed off to an AMPS base station (109) underlying the CDMA coverage area (126) having the smallest corrected phase shift (525).
    Type: Grant
    Filed: May 10, 1996
    Date of Patent: September 10, 2002
    Assignee: Motorola, Inc.
    Inventors: Barry J. Menich, James P. Aldrich, Samuel D. Fernandez