Patents by Inventor Yongkui Han

Yongkui Han 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).

  • Automatic assignment of internet protocol addresses in a ring network
    Patent number: 9525662
    Abstract: In one embodiment, a negotiation is performed between each adjacent pair of a plurality of packet switching devices in a ring network to determine an Internet Protocol (IP) subnet to be used for communicating between said packet switching devices of said adjacent pair. Packets are communicated by said packet switching devices of said adjacent pair using a different IP address of said determined IP subnet. In one embodiment, each of the plurality of packet switching devices is initially assigned an IP subnet to use on one of its two interfaces participating in the ring network; and wherein said negotiation determines which of said two interfaces will use said initially assigned IP subnet.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: December 20, 2016
    Assignee: Cisco Technology, Inc.
    Inventors: Dezhong Cai, Yongkui Han
  • Multicast data delivery over mixed multicast and non-multicast networks
    Patent number: 9008118
    Abstract: In one embodiment, a relay device of a network, which is reachable by a source device via only a non-multicast network, receives a non-multicast that encapsulates a multicast message. The relay device is connected to a sub-network of one or more devices. The relay device decapsulates the unicast message to determine the multicast message, re-encapsulates the multicast message as a relay-sourced multicast message, and multicasts the relay-sourced multicast message to the one or more devices within the sub-network.
    Type: Grant
    Filed: May 17, 2012
    Date of Patent: April 14, 2015
    Assignee: Cisco Technology, Inc.
    Inventors: Yongkui Han, Heidi Ou
  • Automatic Assignment of Internet Protocol Addresses in a Ring Network
    Publication number: 20140314081
    Abstract: In one embodiment, a negotiation is performed between each adjacent pair of a plurality of packet switching devices in a ring network to determine an Internet Protocol (IP) subnet to be used for communicating between said packet switching devices of said adjacent pair. Packets are communicated by said packet switching devices of said adjacent pair using a different IP address of said determined IP subnet. In one embodiment, each of the plurality of packet switching devices is initially assigned an IP subnet to use on one of its two interfaces participating in the ring network; and wherein said negotiation determines which of said two interfaces will use said initially assigned IP subnet.
    Type: Application
    Filed: April 22, 2013
    Publication date: October 23, 2014
    Applicant: Cisco Technology, Inc., a corporation of California
    Inventors: Dezhong Cai, Yongkui Han
  • MULTICAST DATA DELIVERY OVER MIXED MULTICAST AND NON-MULTICAST NETWORKS
    Publication number: 20130308637
    Abstract: In one embodiment, a relay device of a network, which is reachable by a source device via only a non-multicast network, receives a non-multicast that encapsulates a multicast message. The relay device is connected to a sub-network of one or more devices. The relay device decapsulates the unicast message to determine the multicast message, re-encapsulates the multicast message as a relay-sourced multicast message, and multicasts the relay-sourced multicast message to the one or more devices within the sub-network.
    Type: Application
    Filed: May 17, 2012
    Publication date: November 21, 2013
    Applicant: Cisco Technology, Inc.
    Inventors: Yongkui Han, Heidi Ou