Patents by Inventor Philip M. Bates

Philip M. Bates 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).

  • Methods and systems for clock synchronization across wireless networks
    Patent number: 7126937
    Abstract: A wireless local access network includes a hierarchy of access points and mobile devices capable of roaming among the access points. Communications in the network is based on a time division approach, such as a Time Division Multiple Access (TDMA) approach, or spread-spectrum wireless communications approach. An access point that is intermediary in the hierarchy is a slave to a higher level master access point in the hierarchy. The intermediary access point is also master to one or more lower level access points. The intermediary access point synchronizes its clock with its master, and then provides the same synchronization (e.g., clock offset) to any lower level slaves of the intermediary access point so that the lower level slaves can synchronize with the intermediary access point. Thus, the lower level slaves share synchronization with the intermediary access point and the higher level master access point.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: October 24, 2006
    Assignee: Bluesocket, Inc.
    Inventors: David B. Crosbie, Benjamin J. Walter, Philip M. Bates
  • Methods and systems for clock synchronization across wireless networks
    Publication number: 20020114303
    Abstract: A wireless local access network includes a hierarchy of access points and mobile devices capable of roaming among the access points. Communications in the network is based on a time division approach, such as a Time Division Multiple Access (TDMA) approach, or spread-spectrum wireless communications approach. An access point that is intermediary in the hierarchy is a slave to a higher level master access point in the hierarchy. The intermediary access point is also master to one or more lower level access points. The intermediary access point synchronizes its clock with its master, and then provides the same synchronization (e.g., clock offset) to any lower level slaves of the intermediary access point so that the lower level slaves can synchronize with the intermediary access point. Thus, the lower level slaves share synchronization with the intermediary access point and the higher level master access point.
    Type: Application
    Filed: December 21, 2001
    Publication date: August 22, 2002
    Inventors: David B. Crosbie, Benjamin J. Walter, Philip M. Bates