Patents by Inventor Lawrence L. Lieberman

Lawrence L. Lieberman 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: 6871139
    Abstract: A system produces of an empirical map of wireless communication coverage through a process of combining information from individual clients to produce a map which is then shared by all of the clients. The wireless coverage map aids in maintaining a reliable communications link. The empirical map is generated by combining information from a group of mobile wireless users. The group may consist of a fleet of trucks, taxicabs, government service vehicles, or the customers of a wireless service provider. The mobile vehicles must be equipped with a GPS device or be located by other means such as triangulation. While vehicles are moving, the quality of wireless communication, e.g., signal strength or communication continuity, is recorded for each vehicle as a function of positions. The data from all of the vehicles is combined to produce the empirical map. The empirical map may be maintained at a central site and subsets of the map replicated for individual vehicles.
    Type: Grant
    Filed: August 10, 2001
    Date of Patent: March 22, 2005
    Assignee: International Business Machines Corporation
    Inventors: Te-Kai Liu, Michael C. Greenwood, Lawrence L. Lieberman, Kiyoshi Maruyama, Paul A. Moskowitz
  • Publication number: 20020029108
    Abstract: A system produces of an empirical map of wireless communication coverage through a process of combining information from individual clients to produce a map which is then shared by all of the clients. The wireless coverage map aids in maintaining a reliable communications link. The empirical map is generated by combining information from a group of mobile wireless users. The group may consist of a fleet of trucks, taxicabs, government service vehicles, or the customers of a wireless service provider. The mobile vehicles must be equipped with a GPS device or be located by other means such as triangulation. While vehicles are moving, the quality of wireless communication, e.g., signal strength or communication continuity, is recorded for each vehicle as a function of positions. The data from all of the vehicles is combined to produce the empirical map. The empirical map may be maintained at a central site and subsets of the map replicated for individual vehicles.
    Type: Application
    Filed: August 10, 2001
    Publication date: March 7, 2002
    Inventors: Te-Kai Liu, Michael C. Greenwood, Lawrence L. Lieberman, Kiyoshi Maruyama, Paul A. Moskowitz