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:
Jul. 17, 2012
Filed:
Jan. 13, 2010
Surendra Gupta, Richardson, TX (US);
Vijay Khopade, Richardson, TX (US);
Raghu Rajan, Murphy, TX (US);
Manlio Marquez, Plano, TX (US);
Surendra Gupta, Richardson, TX (US);
Vijay Khopade, Richardson, TX (US);
Raghu Rajan, Murphy, TX (US);
Manlio Marquez, Plano, TX (US);
Fujitsu Limited, Kawasaki, JP;
Abstract
A method is provided for protection switching in an optical network. The method may include: (i) establishing a baseline power level for a channel and a threshold value for the channel approximately equal to a predetermined threshold value; (ii) receiving a signal associated with the channel via each of a first path of the optical network and a second path of the optical network; (iii) monitoring a power intensity of the signal received via the first path; (iv) determining an average power intensity of the signal received via the first path based on the monitored power intensity; (v) modifying at least one of the baseline power level and the threshold value in response to a determination that the average power intensity exceeds the baseline power level; and (vi) protection switching from the signal received via the first path to the signal received via the second path in response to a determination that the baseline power level exceeds the power intensity of the signal received via the first path by the threshold.