Patents by Inventor Zihuang Wang

Zihuang 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).

  • Synchronization method for NAT static port forwarding objects in redundant configurations
    Patent number: 8543678
    Abstract: The invention is directed to providing a centralized synchronization method for redundant network elements and is particularly advantageous to routers providing network address translation (NAT) services requiring static port forwarding provisioning. Synchronization is provided by a network management system which can handle one or more backup routers or other network elements using a control protocol different from the control protocol used by the active router.
    Type: Grant
    Filed: January 3, 2012
    Date of Patent: September 24, 2013
    Assignee: Alcatel Lucent
    Inventors: Loredana M. Nitu, Anand Thiagarajan, Gurudas Somadder, Zihuang Wang, Attaullah Zabihi-Seissan
  • SYNCHRONIZATION METHOD FOR NAT STATIC PORT FORWARDING OBJECTS IN REDUNDANT CONFIGURATIONS
    Publication number: 20130173772
    Abstract: The invention is directed to providing a centralized synchronization method for redundant network elements and is particularly advantageous to routers providing network address translation (NAT) services requiring static port forwarding provisioning. Synchronization is provided by a network management system which can handle one or more backup routers or other network elements using a control protocol different from the control protocol used by the active router.
    Type: Application
    Filed: January 3, 2012
    Publication date: July 4, 2013
    Inventors: Loredana M. Nitu, Anand Thiagarajan, Gurudas Somadder, Zihuang Wang, Attaullah Zabihi-Seissan
  • Method and apparatus for providing full logical connectivity in MPLS networks
    Patent number: 8155028
    Abstract: The invention includes a method and apparatus for configuring logical connectivity for a network comprising a plurality of nodes. A method includes determining a physical topology of the network, determining a set of LSP paths based on the physical topology of the network, and determining a set of LSPs using the set of LSP paths, where the set of LSPs includes a plurality of LSPs adapted for providing full logical connectivity between the nodes of the network. The physical topology is determined using information indicative of physical connectivity between nodes of the network. The set of LSP paths includes, for each pair of nodes in the network, at least two logical paths between the nodes of the node pair. The set of LSPs includes a plurality of LSPs adapted for providing full logical connectivity between the nodes of the network.
    Type: Grant
    Filed: March 17, 2008
    Date of Patent: April 10, 2012
    Assignee: Alcatel Lucent
    Inventors: Rateb Abu-Hamdeh, Joël Calippe, Zihuang Wang
  • METHOD AND APPARATUS FOR PROVIDING FULL LOGICAL CONNECTIVITY IN MPLS NETWORKS
    Publication number: 20090232029
    Abstract: The invention includes a method and apparatus for configuring logical connectivity for a network comprising a plurality of nodes. A method includes determining a physical topology of the network, determining a set of LSP paths based on the physical topology of the network, and determining a set of LSPs using the set of LSP paths, where the set of LSPs includes a plurality of LSPs adapted for providing full logical connectivity between the nodes of the network. The physical topology is determined using information indicative of physical connectivity between nodes of the network. The set of LSP paths includes, for each pair of nodes in the network, at least two logical paths between the nodes of the node pair. The set of LSPs includes a plurality of LSPs adapted for providing full logical connectivity between the nodes of the network.
    Type: Application
    Filed: March 17, 2008
    Publication date: September 17, 2009
    Inventors: Rateb Abu-Hamdeh, Joel Calippe, Zihuang Wang