Patents by Inventor Youdao Xue

Youdao Xue 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).

  • WDM layer-based optical chanel protecting device and method thereof
    Patent number: 7877008
    Abstract: The present invention discloses a WDM layer-based OChP device and the method thereof, i.e., M protection channels are added in the transmitting module and the receiving module to connect to receiving ends and transmitting ends of M protection channels in the WDM system; a switching device is added so as to switch signals in specified working channels to specified protection channels or switch signals transmitted in specified protection channels back to specified working channels according to switching requests from the WDM system; wherein M and N are natural numbers, and M<N. Because the number M of protection channels is less than the number N of the working channels, compared with 1+1 or 1:1 protection solution, this solution helps to save optical wavelength resource and initial cost. In addition, compared with 1+1 or 1:1 protection solution, when M>1, this solution can significantly reduce the risk of ruined backup performance due to above failures, without requiring increased cost.
    Type: Grant
    Filed: May 29, 2003
    Date of Patent: January 25, 2011
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Weishi Li, Youdao Xue, Dianjun Xiao, Yanming Liu, Wenbin Luo, Shiyin Zhang
  • Wdm layer-based optical chanel protecting device and method thereof
    Publication number: 20060056842
    Abstract: The present invention discloses a WDM layer-based OChP device and the method thereof, i.e., M protection channels are added in the transmitting module and the receiving module to connect to receiving ends and transmitting ends of M protection channels in the WDM system; a switching device is added so as to switch signals in specified working channels to specified protection channels or switch signals transmitted in specified protection channels back to specified working channels according to switching requests from the WDM system; wherein M and N are natural numbers, and M<N. Because the number M of protection channels is less than the number N of the working channels, compared with 1+1 or 1:1 protection solution, this solution helps to save optical wavelength resource and initial cost. In addition, compared with 1+1 or 1:1 protection solution, when M>1, this solution can significantly reduce the risk of ruined backup performance due to above failures, without requiring increased cost.
    Type: Application
    Filed: May 29, 2003
    Publication date: March 16, 2006
    Applicant: Huawei Technologies Co., Ltd. Intellectual Property Department
    Inventors: Weishi Li, Youdao Xue, Dianjun Xiao, Yanming Liu, Wenbin Luo, Shiyin Zhang