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:
Apr. 03, 2012
Filed:
Jun. 20, 2008
Gagan L. Choudhury, Marlboro, NJ (US);
Angela Lan Chiu, Holmdel, NJ (US);
Robert Duncan Doverspike, Tinton Falls, NJ (US);
Guangzhi LI, Madison, NJ (US);
John L. Strand, Holmdel, NJ (US);
Gagan L. Choudhury, Marlboro, NJ (US);
Angela Lan Chiu, Holmdel, NJ (US);
Robert Duncan Doverspike, Tinton Falls, NJ (US);
Guangzhi Li, Madison, NJ (US);
John L. Strand, Holmdel, NJ (US);
AT&T Intellectual Property II, LP, Atlanta, GA (US);
Abstract
Systems and methods are described for restoring wavelength services in mesh networks using pre-configured, standby lightpaths. The standby lightpaths are pre-cross-connected lightpaths that provide connectivity between switching nodes having a fiber link of degree-2 or higher. The restoration method overcomes the problem of optical impairments for long haul connections, avoids wavelength power balancing delays, provides wavelength conversion for capacity efficiency, and allows sharing of links across nonsimultaneous failures.