Patents by Inventor MATTHEW MAH

MATTHEW MAH 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 system for adaptive synchronization of timing information generated by independently clocked communication nodes
    Patent number: 8837530
    Abstract: A system and method are provided for adaptive synchronization of timing information provided in communications messages transmitted between independently clocked communication nodes of a wireless communications network. The system and method include measures for collecting timestamps of messages generated by a plurality of the nodes, each timestamp being generated by one of the nodes relative to a local time reference thereof. A pairwise clock error is computed for at least one pair of nodes based upon a plurality of network messages passed therebetween. A global time reference is adaptively established for the timestamps responsive to the pairwise clock error. A plurality of mapping factors are defined each for translating from one local time reference to the global time reference. The mapping factors are selectively applied to corresponding ones of the timestamps.
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: September 16, 2014
    Assignee: University of Maryland
    Inventors: Ashok K. Agrawala, Matthew Mah
  • METHOD AND SYSTEM FOR ADAPTIVE SYNCHRONIZATION OF TIMING INFORMATION GENERATED BY INDEPENDENTLY CLOCKED COMMUNICATION NODES
    Publication number: 20110268097
    Abstract: A system and method are provided for adaptive synchronization of timing information provided in communications messages transmitted between independently clocked communication nodes of a wireless communications network. The system and method include measures for collecting timestamps of messages generated by a plurality of the nodes, each timestamp being generated by one of the nodes relative to a local time reference thereof. A pairwise clock error is computed for at least one pair of nodes based upon a plurality of network messages passed therebetween. A global time reference is adaptively established for the timestamps responsive to the pairwise clock error. A plurality of mapping factors are defined each for translating from one local time reference to the global time reference. The mapping factors are selectively applied to corresponding ones of the timestamps.
    Type: Application
    Filed: March 14, 2011
    Publication date: November 3, 2011
    Applicant: UNIVERSITY OF MARYLAND
    Inventors: ASHOK K. AGRAWALA, MATTHEW MAH