Patents by Inventor Emad Ramahi

Emad Ramahi 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).

  • Patent number: 7313398
    Abstract: A system, method, and device for a soft-hard handoff within a wireless telecommunications network are provided. The network may include a mobile station using a first carrier frequency for communication with a base transceiver station (BTS). The BTS may send a carrier frequency list to the mobile station that includes one or more carrier frequencies. The mobile station may include a carrier frequency searcher (CFS) that searches across the carrier frequencies to find a pilot signal having a strength greater than a threshold value. The mobile station may perform a soft-hard handoff by tuning itself to a second carrier frequency associated with the pilot signal. Subsequent communications involving the mobile station may use the second carrier frequency.
    Type: Grant
    Filed: August 6, 2002
    Date of Patent: December 25, 2007
    Assignee: Sprint Spectrum L.P.
    Inventor: Emad Ramahi
  • Publication number: 20070147290
    Abstract: a communication system comprises a plurality of downstream transmission systems configured to transmit downstream wireless communications to an area having a plurality of sectors over a plurality of downstream channels to a plurality of users in the plurality of sectors and a plurality of upstream receiver systems configured to receive upstream wireless communications over a plurality of upstream channels from the plurality of users in the plurality sectors. In an embodiment, the plurality of upstream channels comprise multiple contention channels associated with each of the plurality of sectors and a plurality of bearer channels associated with each of the plurality of sectors and the plurality of upstream receiver systems are further configured to receive a plurality of requests from the plurality of users over the multiple contention channels for access to the plurality of bearer channels.
    Type: Application
    Filed: June 8, 2006
    Publication date: June 28, 2007
    Inventors: Steve Dispensa, Emad Ramahi, John Montross, Charles Woods, Michael Denny, Benjamin Bellinder, George Moura, Dave McGinniss, Harry Perlow