Patents by Inventor Cheng Kun Wang

Cheng Kun Wang 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).

  • Route re-query scheme in communication networks
    Patent number: 7768996
    Abstract: A method for re-querying for routing information is disclosed. The method transmits an initial admission query to a gatekeeper or a request for routing information and receives an admission confirmation or routing information response with a destination address. The method then tries to establish a connection with the destination address. Upon reception of a call failure message including a failure cause, the method, optionally, increments a counter and transmits a re-query to the gatekeeper or other routing entity, and the re-query includes the failure cause and, optionally, a value of the query counter.
    Type: Grant
    Filed: March 20, 2003
    Date of Patent: August 3, 2010
    Assignee: Cisco Technology, Inc.
    Inventors: Henry Louis Fourie, Paul Edwin Jones, Cheng Kun Wang, Madhu Gindi