Patents by Inventor Kenneth W. Shelhamer

Kenneth W. Shelhamer 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: 5381464
    Abstract: A method of establishing a telecommunications call connection in a cellular wireless system. If a mobile station is near the border between areas served by two mobile switching center (MSCs) then the mobile is paged from appropriate base stations of one of the MSCs while the other MSC is alerted to listen for page responses from the paged mobile station. Advantageously, the number of paging orders is substantially reduced thus increasing the call handling capacity of the base station systems. The second MSC is initialized to be prepared to process a page response from the mobile station being paged from the base stations of the first MSC. Advantageously, this permits straightforward recognition of a valid paging response and a record of the call with which that response is associated.
    Type: Grant
    Filed: June 24, 1993
    Date of Patent: January 10, 1995
    Assignee: AT&T Corp.
    Inventors: Julia A. O'Keefe, Douglas H. Riley, Kenneth W. Shelhamer
  • Patent number: 4599490
    Abstract: A method and apparatus for controlling a cellular mobile telecommunication system. A switch and a telecommunication control complex cooperate to set up connection between a telecommunication network, such as the common carrier public telephone network, and a plurality of mobile units. The switch sets up connections between trunks to the telephone network and communication links connected to the cell sites of the mobile telecommunication system. The telecommunication control complex, including a mobile telecommunication controller and the cell site controllers, controls the radio connections between these communication links and the mobile units.
    Type: Grant
    Filed: December 19, 1983
    Date of Patent: July 8, 1986
    Assignee: AT&T Bell Laboratories
    Inventors: Ronald G. Cornell, George D. Huensch, Kenneth W. Shelhamer, Pramod Warty