Patents by Inventor Robert Stedman

Robert Stedman 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).

  • System and method for determining the audio fidelity of calls made on a cellular network using frame error rate and pilot signal strength
    Patent number: 8140069
    Abstract: The present invention provides a method and system for defining the mean opinion score (MOS) as a function of frame error rate (FER) and pilot signal strength. In an embodiment of the invention, an entity receives MOS scores that have been obtained using subjective tests for certain calls made within the network. Next, the entity receives FER and pilot signal strength samples that have been obtained for the calls for which MOS scores have been subjectively obtained. Finally, the entity calculates an equation for the MOS as a function of FER and pilot signal strength using a non-linear regression analysis.
    Type: Grant
    Filed: June 12, 2008
    Date of Patent: March 20, 2012
    Assignee: Sprint Spectrum L.P.
    Inventors: Abhishek Lall, Ashish Bhan, Sachin Vargantwar, Robert Stedman, Mark Yarkosky