Patents by Inventor Dingbo Cao

Dingbo Cao 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).

  • Method and system for implementing multicast using slave block in digital subscriber line access technique
    Patent number: 7664053
    Abstract: Embodiments of the present invention provide a method and a system for implementing multicast using a slave block in DSL access technique. Several slave blocks are cascaded with a master block accessed to the DSL. The master block and slave block are respectively connected with DSL users via RTUs, and access an uplink via a network interface of the master block. The slave block is configured to support the IGMP proxy or the IGMP snooping so as to implement multicast function independently. This invention overcomes the shortcomings including the heavy burden on the master block, low efficiency and serious waste in bandwidth resulting from the fact that the operation of the slave block multicast member is implemented in the master block, thus increasing the efficiency of multicast and saving bandwidth of the master block.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: February 16, 2010
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Wumao Chen, Yong Luo, Dingbo Cao, Bo Ke, Meng Wu
  • METHOD AND SYSTEM FOR IMPLEMENTING MULTICAST USING SLAVE BLOCK IN DIGITAL SUBSCRIBER LINE ACCESS TECHNIQUE
    Publication number: 20080123647
    Abstract: Embodiments of the present invention provide a method and a system for implementing multicast using a slave block in DSL access technique. Several slave blocks are cascaded with a master block accessed to the DSL. The master block and slave block are respectively connected with DSL users via RTUs, and access an uplink via a network interface of the master block. The slave block is configured to support the IGMP proxy or the IGMP snooping so as to implement multicast function independently. This invention overcomes the shortcomings including the heavy burden on the master block, low efficiency and serious waste in bandwidth resulting from the fact that the operation of the slave block multicast member is implemented in the master block, thus increasing the efficiency of multicast and saving bandwidth of the master block.
    Type: Application
    Filed: June 29, 2007
    Publication date: May 29, 2008
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Wumao CHEN, Yong LUO, Dingbo CAO, Bo KE, Meng WU