Patents by Inventor Renhai Zhang

Renhai Zhang 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: 9397925
    Abstract: A method and an apparatus for advertising border connection information of autonomous system are disclosed. Moreover, the method includes: establishing and maintaining, by a border node of the autonomous system, the border connection information of the autonomous system; flooding the border connection information within the autonomous system; and receiving, by nodes of the autonomous system, the border connection information. The method and the apparatus for advertising border connection information of autonomous system of embodiments of the present invention may adapt to dynamic change of network topology, and dynamically advertise the border connection information of the autonomous system within the system in time, so as to optimize networks and improve quality of service of the networks.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: July 19, 2016
    Assignee: HUAWEI TECHNOLOGIES CO.,LTD
    Inventors: Hongmiao Xia, Renhai Zhang, Guoyi Chen, Xingfeng Jiang
  • Patent number: 9276836
    Abstract: A method and an apparatus for advertising border connection information of autonomous system are disclosed. Moreover, the method includes: establishing and maintaining, by a border node of the autonomous system, the border connection information of the autonomous system; flooding the border connection information within the autonomous system; and receiving, by nodes of the autonomous system, the border connection information. The method and the apparatus for advertising border connection information of autonomous system of embodiments of the present invention may adapt to dynamic change of network topology, and dynamically advertise the border connection information of the autonomous system within the system in time, so as to optimize networks and improve quality of service of the networks.
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: March 1, 2016
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Hongmiao Xia, Renhai Zhang, Guoyi Chen, Xingfeng Jiang
  • Publication number: 20160050138
    Abstract: A method and an apparatus for advertising border connection information of autonomous system are disclosed. Moreover, the method includes: establishing and maintaining, by a border node of the autonomous system, the border connection information of the autonomous system; flooding the border connection information within the autonomous system; and receiving, by nodes of the autonomous system, the border connection information. The method and the apparatus for advertising border connection information of autonomous system of embodiments of the present invention may adapt to dynamic change of network topology, and dynamically advertise the border connection information of the autonomous system within the system in time, so as to optimize networks and improve quality of service of the networks.
    Type: Application
    Filed: October 28, 2015
    Publication date: February 18, 2016
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Hongmiao Xia, Renhai Zhang, Guoyi Chen, Xingfeng Jiang
  • Publication number: 20120320796
    Abstract: A method and an apparatus for advertising border connection information of autonomous system are disclosed. Moreover, the method includes: establishing and maintaining, by a border node of the autonomous system, the border connection information of the autonomous system; flooding the border connection information within the autonomous system; and receiving, by nodes of the autonomous system, the border connection information. The method and the apparatus for advertising border connection information of autonomous system of embodiments of the present invention may adapt to dynamic change of network topology, and dynamically advertise the border connection information of the autonomous system within the system in time, so as to optimize networks and improve quality of service of the networks.
    Type: Application
    Filed: August 27, 2012
    Publication date: December 20, 2012
    Applicant: Huawei Technologies Co., Ltd.
    Inventors: Hongmiao Xia, Renhai Zhang, Guoyi Chen, Xingfeng Jiang
  • Patent number: 8279881
    Abstract: A method for route updating includes: a. determining more than one route in accordance with a predetermined preset mechanism and sending the determined more than one route to a client and/or a non-client, by a reflector in a route advertisement, and saving more than one route reaching the same destination address by the client and/or the non-client; and b. sending to the client and/or the non-client a message carrying information on the next hop of the route to be withdrawn, by the reflector in a withdrawal of a route and withdrawing the corresponding route for route updating in accordance with the information on the next hop carried in the message, by the client/the non-client. A system for route updating and a router reflector is also provided.
    Type: Grant
    Filed: January 4, 2008
    Date of Patent: October 2, 2012
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Renhai Zhang, Hui Ni, Yuan Rao
  • Patent number: 8270317
    Abstract: A method and an apparatus for advertising border connection information of autonomous system are disclosed. Moreover, the method includes: establishing and maintaining, by a border node of the autonomous system, the border connection information of the autonomous system; flooding the border connection information within the autonomous system; and receiving, by nodes of the autonomous system, the border connection information. The method and the apparatus for advertising border connection information of autonomous system of embodiments of the present invention may adapt to dynamic change of network topology, and dynamically advertise the border connection information of the autonomous system within the system in time, so as to optimize networks and improve quality of service of the networks.
    Type: Grant
    Filed: May 8, 2009
    Date of Patent: September 18, 2012
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Hongmiao Xia, Renhai Zhang, Guoyi Chen, Xingfeng Jiang
  • Patent number: 8125929
    Abstract: A method and an apparatus for advertising border connection information of autonomous system are disclosed. Moreover, the method includes: establishing and maintaining, by a border node of the autonomous system, the border connection information of the autonomous system; flooding the border connection information within the autonomous system; and receiving, by nodes of the autonomous system, the border connection information. The method and the apparatus for advertising border connection information of autonomous system of embodiments of the present invention may adapt to dynamic change of network topology, and dynamically advertise the border connection information of the autonomous system within the system in time, so as to optimize networks and improve quality of service of the networks.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: February 28, 2012
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Hongmiao Xia, Renhai Zhang, Guoyi Chen, Xingfeng Jiang
  • Patent number: 7978622
    Abstract: A method for implementing path computation in a domain includes: storing, in each of path computation elements of a domain, global path computation information for path computation in the domain; and performing path computation by the path computation element in accordance with the global path computation information if a path is to be established as requested. A device for implementing path computation in a domain includes: a storage unit for storing global path computation information used for path computation in a domain; and a computation unit for performing path computation in accordance with the global path computation information stored in the storage unit if a path is to be established as requested.
    Type: Grant
    Filed: May 19, 2006
    Date of Patent: July 12, 2011
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Renhai Zhang
  • Publication number: 20110007749
    Abstract: A method and an apparatus for advertising border connection information of autonomous system are disclosed. Moreover, the method includes: establishing and maintaining, by a border node of the autonomous system, the border connection information of the autonomous system; flooding the border connection information within the autonomous system; and receiving, by nodes of the autonomous system, the border connection information. The method and the apparatus for advertising border connection information of autonomous system of embodiments of the present invention may adapt to dynamic change of network topology, and dynamically advertise the border connection information of the autonomous system within the system in time, so as to optimize networks and improve quality of service of the networks.
    Type: Application
    Filed: September 30, 2010
    Publication date: January 13, 2011
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Hongmiao XIA, Renhai ZHANG, Guoyi CHEN, Xingfeng JIANG
  • Patent number: 7808972
    Abstract: A method for processing distributed path computation requests includes: storing all path computation requests in an autonomous system, in each of Path Computation Elements (PCEs); and performing a path computation by a PCE in accordance with a path computation request obtained from the all path computation requests.
    Type: Grant
    Filed: November 21, 2007
    Date of Patent: October 5, 2010
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Renhai Zhang
  • Publication number: 20090274159
    Abstract: A method and an apparatus for advertising border connection information of autonomous system are disclosed. Moreover, the method includes: establishing and maintaining, by a border node of the autonomous system, the border connection information of the autonomous system; flooding the border connection information within the autonomous system; and receiving, by nodes of the autonomous system, the border connection information. The method and the apparatus for advertising border connection information of autonomous system of embodiments of the present invention may adapt to dynamic change of network topology, and dynamically advertise the border connection information of the autonomous system within the system in time, so as to optimize networks and improve quality of service of the networks.
    Type: Application
    Filed: May 8, 2009
    Publication date: November 5, 2009
    Applicant: Huawei Technologies Co., Ltd.
    Inventors: Hongmiao Xia, Renhai Zhang, Guoyi Chen, Xingfeng Jiang
  • Publication number: 20080151896
    Abstract: A method for implementing path computation in a domain includes: storing, in each of path computation elements of a domain, global path computation information for path computation in the domain; and performing path computation by the path computation element in accordance with the global path computation information if a path is to be established as requested. A device for implementing path computation in a domain includes: a storage unit for storing global path computation information used for path computation in a domain; and a computation unit for performing path computation in accordance with the global path computation information stored in the storage unit if a path is to be established as requested.
    Type: Application
    Filed: May 19, 2006
    Publication date: June 26, 2008
    Inventor: Renhai Zhang
  • Publication number: 20080101392
    Abstract: A method for route updating includes: a. determining more than one route in accordance with a predetermined preset mechanism and sending the determined more than one route to a client and/or a non-client, by a reflector in a route advertisement, and saving more than one route reaching the same destination address by the client and/or the non-client; and b. sending to the client and/or the non-client a message carrying information on the next hop of the route to be withdrawn, by the reflector in a withdrawal of a route and withdrawing the corresponding route for route updating in accordance with the information on the next hop carried in the message, by the client/the non-client. A system for route updating and a router reflector is also provided.
    Type: Application
    Filed: January 4, 2008
    Publication date: May 1, 2008
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Renhai ZHANG, Hui NI, Yuan RAO
  • Publication number: 20080069010
    Abstract: A method for processing distributed path computation requests includes: storing all path computation requests in an autonomous system, in each of Path Computation Elements (PCEs); and performing a path computation by a PCE in accordance with a path computation request obtained from the all path computation requests.
    Type: Application
    Filed: November 21, 2007
    Publication date: March 20, 2008
    Inventor: Renhai Zhang