Patents by Inventor Robert Willem Dijkerman

Robert Willem Dijkerman 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).

  • Circuit-mode data service support over the A-interface
    Patent number: 6259684
    Abstract: An architecture that adapts low speed mobile data over higher speed digital channels, comprising: Intersystem Link Protocol (ISLP) framing structure having ISLP service data units; circuit-mode data carried by the ISLP service data units; a set of call processing and handoff messages, said set including Assignment Request, Assignment Complete, Handoff Required, Handoff Request, and Handoff Request Acknowledge; an indicator incorporated into said set; and digital channels responsive to said indicator to transport the circuit-mode data via the ISLP service data units over an A-interface between a base station (BS) and a mobile switching center (MSC).
    Type: Grant
    Filed: May 18, 1998
    Date of Patent: July 10, 2001
    Assignee: Nortel Networks Limited
    Inventors: Mo-Han Fong, Geng Wu, Duncan Charles Bees, Robert Willem Dijkerman