The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 25, 2011
Filed:
May. 29, 2003
Weishi LI, Guangdong Province, CN;
Youdao Xue, Guangdong Province, CN;
Dianjun Xiao, Guangdong Province, CN;
Yanming Liu, Guangdong Province, CN;
Wenbin Luo, Guangdong Province, CN;
Shiyin Zhang, Guangdong Province, CN;
Weishi Li, Guangdong Province, CN;
Youdao Xue, Guangdong Province, CN;
Dianjun Xiao, Guangdong Province, CN;
Yanming Liu, Guangdong Province, CN;
Wenbin Luo, Guangdong Province, CN;
Shiyin Zhang, Guangdong Province, CN;
Huawei Technologies Co., Ltd., Shenzhen, CN;
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.