Patents by Inventor Changtai Li

Changtai Li 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 apparatus for protecting subscriber access network
    Patent number: 8614943
    Abstract: Embodiments of the present disclosure disclose a method and an apparatus for protecting a subscriber access network, and relate to the field of communications. The method includes: connecting a Broadband Network Gateway BNG device and N predetermined Digital Subscriber Line Access Multiplexers DSLAMs to an aggregation device AGG; allocating an active BNG interface for each of the N DSLAMs, allocating a standby BNG interface set for the N DSLAMs to obtain a backup relationship, and sending the backup relationship to the AGG (102); and backing up subscriber data on the DSLAMs to the standby BNG interface set, so that when an active BNG interface fails, the AGG switches subscribers on a DSLAM served by the failed active BNG interface to a standby BNG interface in the standby BNG interface set.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: December 24, 2013
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Changtai Li, Dong Yang, Guangyu Sun
  • METHOD AND APPARATUS FOR PROTECTING SUBSCRIBER ACCESS NETWORK
    Publication number: 20120155247
    Abstract: Embodiments of the present disclosure disclose a method and an apparatus for protecting a subscriber access network, and relate to the field of communications. The method includes: connecting a Broadband Network Gateway BNG device and N predetermined Digital Subscriber Line Access Multiplexers DSLAMs to an aggregation device AGG; allocating an active BNG interface for each of the N DSLAMs, allocating a standby BNG interface set for the N DSLAMs to obtain a backup relationship, and sending the backup relationship to the AGG (102); and backing up subscriber data on the DSLAMs to the standby BNG interface set, so that when an active BNG interface fails, the AGG switches subscribers on a DSLAM served by the failed active BNG interface to a standby BNG interface in the standby BNG interface set.
    Type: Application
    Filed: February 21, 2012
    Publication date: June 21, 2012
    Applicant: Huawei Technologies Co., Ltd
    Inventors: Changtai Li, Dong Yang, Guangyu Sun