NDLI: Survivable traffic grooming in elastic optical networks

Content Provider	IEEE Xplore Digital Library
Author	Menglin Liu Tornatore, M. Mukherjee, B.
Copyright Year	2012
Description	Author affiliation: Department of Electronics and Information, Politecnico di Milano, Milano, Italy (Tornatore, M.) \|\| Department of Computer Science, University of California, Davis, CA 95616 (Menglin Liu; Mukherjee, B.)
Abstract	This study investigates the survivable traffic grooming problem for elastic optical networks with flexible grid employing new transmission technologies, e.g., orthogonal frequency-division multiplexing (OFDM). In such networks, the strict ITU-T wavelength grid is not followed. Instead, optical transponders are developed to be capable of properly tuning their rates. Equipping the network with gridless and elastic optical paths allows us to efficiently use the optical spectrum. In this paper, we propose a novel elastic shared path protection (ESPP), which does not only provide the traditional backup sharing of shared path protection (SPP) (i.e., the backup capacity of one optical path (i.e., lightpath) can be shared among multiple backup paths, provided that their corresponding working paths are link-disjoint), but also explores a new opportunity of sharing enabled by the tunability of the transponders: in fact, the backup spectrum can be shared between two adjacent lightpaths on a link, if their corresponding working paths are link-disjoint. The elasticity of the transponder enables the expansion and contraction of the lightpaths, so that at one time, the backup spectrum is used by only one of the adjacent lightpaths. Note that in traditional wavelength-division-multiplexing (WDM) networks, the lightpaths are fixed-grid, rigid-bandwidth, nor can they overlap each other. Our results show that ESPP is more spectrum efficient than traditional SPP.
Starting Page	6230
Ending Page	6234
File Size	579778
Page Count	5
File Format	PDF
ISBN	9781457720529
ISSN	15503607
e-ISBN	9781457720536
e-ISBN	9781457720512
DOI	10.1109/ICC.2012.6364983
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-06-10
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical fiber networks Transponders WDM networks Optical signal processing Elasticity Bandwidth
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
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