NDLI: Light-hierarchy: the optimal structure for multicast routing in WDM mesh networks

Content Provider	IEEE Xplore Digital Library
Author	Fen Zhou Molnar, M. Cousin, B.
Copyright Year	2010
Description	Author affiliation: IRISA / University of Rennes 1 Campus de Beaulieu Rennes, France, 35042 (Cousin, B.) \|\| IRISA / INSA Rennes Campus de Beaulieu Rennes, France, 35042 (Fen Zhou; Molnar, M.)
Abstract	Based on the false assumption that multicast incapable (MI) nodes could not be traversed twice on the same wavelength, the light-tree structure was always thought to be optimal for multicast routing in sparse splitting Wavelength Division Multiplexing (WDM) networks. In fact, for establishing a multicast session, an MI node could be crosswise visited more than once to switch a light signal towards several destinations with only one wavelength through different input and output pairs. This is called Cross Pair Switching (CPS). Thus, a new multicast routing structure light-hierarchy is proposed for alloptical multicast routing, which permits the cycles introduced by the CPS capability of MI nodes. We proved that the optimal structure for minimizing the cost of multicast routing is a set of light-hierarchies rather than the light-trees in sparse splitting WDM networks. Integer linear programming (ILP) formulations are developed to search the optimal light-hierarchies. Numerical results verified that the light-hierarchy structure could save more cost than the light-tree structure.
Starting Page	611
Ending Page	616
File Size	890270
Page Count	6
File Format	PDF
ISBN	9781424477548
ISSN	15301346
e-ISBN	9781424477555
DOI	10.1109/ISCC.2010.5643912
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-06-22
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Routing WDM networks Optical switches Mathematical model Equations Cross Pair Switching, Integer Linear Programming (ILP) WDM Networks, All-Optical Multicast Routing (AOMR) Sparse Splitting, Light-Hierarchy, Light-tree
Content Type	Text
Resource Type	Article
Subject	Signal Processing Mathematics Computer Networks and Communications Computer Science Applications Software

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Light-Hierarchy: The Optimal Structure for Multicast Routing in WDM Mesh Networks (2010)

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