Patents by Inventor Xiangqing Chang

Xiangqing Chang 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).

  • Publication number: 20100260181
    Abstract: The present invention discloses a method for implementing centralized control plane and distributed data plane and that comprises the following steps: the main control unit of the main board generates control information and delivers it to the adaptation layer of the main board; the adaptation layer of the main board transmits the control information to the adaptation layer of the service board(s); the adaptation layer of the service board(s) delivers the control information to the data plane and hardware engine of the service board(s). The present discloses a program and system for implementing centralized control plane and distributed data plane. The present invention provides a software architecture using an adaptation layer to implement centralized control plane and distributed data plane to ensure high performance and good scalability of the new architecture, reduce system complexity, and keep system simplicity and efficiency.
    Type: Application
    Filed: June 2, 2008
    Publication date: October 14, 2010
    Applicant: HANGZHOU H3C TECHNOLOGIES CO., LTD.
    Inventors: Xiangqing Chang, Xuefeng Zhang, Xudong Zou
  • Publication number: 20100195647
    Abstract: The present invention discloses a packet processing apparatus and method. The packet processing apparatus is applied to an L4˜L7 network device, including a plurality of interface processing units and a plurality of service processing units, the interface processing units are connected with the service processing units through a first connection unit; and each of the interface processing units is adapted to select, after receiving a packet from outside, a service processing unit from all the service processing units and transmit the packet to the selected service processing unit; and each of the service processing units is adapted to perform service processing to the packet after receiving the packet. The present invention improves packet processing capability and reliability of the L4˜L7 network device.
    Type: Application
    Filed: June 26, 2008
    Publication date: August 5, 2010
    Applicant: HANGZHOU H3C TECHNOLOGIES CO., LTD.
    Inventors: Ju Wang, Zhanming Wei, Xudong Zou, Xiao Li, Xiangqing Chang
  • Publication number: 20100132028
    Abstract: Embodiments of the present invention provide method for implementing security-related processing on packet and a network security device. Through establishing a relationship between stream attribute information of an initial packet of a stream and security-related processing information implemented on the initial packet, when a succeeding packet of the stream is received, the previously stored relationship is acquired according to stream attribute information of the succeeding packet, the security-related processing is implemented on the succeeding packet according to the security-related processing information in the relationship.
    Type: Application
    Filed: July 17, 2008
    Publication date: May 27, 2010
    Inventors: Ju Wang, Mingyu Li, Xudong Zou, Xiangqing Chang, Zhongwei Fang, Xiao Li
  • Publication number: 20090070560
    Abstract: A method accelerates access of a multi-core system to its critical resources, which includes preparing to delete a critical node in a critical resource, separating the critical node from the critical resource, and deleting the critical node if the conditions for deleting the critical node are satisfied. An apparatus includes a confirmation module for the node to be deleted and a deletion module to accelerate access of a multi-core system to its critical resources.
    Type: Application
    Filed: September 26, 2007
    Publication date: March 12, 2009
    Inventors: Dan Meng, Xiangqing Chang, Yibin Gong, Kunpeng Zhao