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:
Nov. 08, 2016
Filed:
Mar. 22, 2012
Filippo Cugini, Fidenza, IT;
Giulio Bottari, Leghorn, IT;
Gianmarco Bruno, Genoa, IT;
Piero Castoldi, Vicopisano, IT;
Paola Iovanna, Rome, IT;
Nicola Sambo, Leghorn, IT;
Filippo Cugini, Fidenza, IT;
Giulio Bottari, Leghorn, IT;
Gianmarco Bruno, Genoa, IT;
Piero Castoldi, Vicopisano, IT;
Paola Iovanna, Rome, IT;
Nicola Sambo, Leghorn, IT;
TELEFONAKTIEBOLAGET LM ERICSSON (publ), Stockholm, SE;
Abstract
A method of changing the spectral position of a lightpath between a source node and a destination node of an optical network. The optical network uses a flexible grid for spectral allocation and the lightpath has been allocated first spectral resources at a first spectral position. The method comprises, at the source node, reserving additional spectral resources for the lightpath which are contiguous in frequency with the first spectral resources. The method comprises re-tuning a light source at the source node such that the lightpath moves in frequency from using the first spectral resources at the first spectral position to using second spectral resources at a second spectral position, wherein the second spectral resources comprise at least some of the additional spectral resources. The method comprises releasing at least some of the first spectral resources. The source node continues to send traffic over the lightpath during the re-tuning.