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Protecting multicast sessions in WDM optical mesh networks (2003)
| Venue: | Journal of Lightwave Technology |
| Citations: | 17 - 2 self |
BibTeX
@ARTICLE{Singhal03protectingmulticast,
author = {Narendra K. Singhal and Biswanath Mukherjee},
title = {Protecting multicast sessions in WDM optical mesh networks},
journal = {Journal of Lightwave Technology},
year = {2003},
volume = {21},
pages = {884--892}
}
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Abstract
Abstract—Recent advances in wavelength-division-multiplexing (WDM) technology are expected to facilitate bandwidth-intensive multicast applications. However, a single fiber (bundle) cut on such a network can disrupt the transmission of information to several destination nodes on a “light tree”-based multicast session. Thus, it is imperative to protect multicast sessions e.g., by reserving resources along backup trees. We show that, if a backup tree is directed-link-disjoint to its primary counterpart, then data loss can be prevented in the event of any single link failure. We provide mathematical formulations for efficient routing and wavelength assignment (RWA) of several multicast sessions (including their backup trees for dedicated protection) at a globally optimum cost. We present these formulations for networks equipped with two kinds of multicast-capable switch architectures: one using the opaque (O–E–O) approach and the other using transparent (all-optical) approach. We expand our formulations to accommodate sparse splitting constraints in a network, in which an optical splitter has limited splitting fanout and each node has a limited number of such splitters. We develop a profit-maximizing model that would enable a network operator to be judicious in selecting sessions and simultaneously routing the chosen ones optimally. We illustrate the solutions obtained from solving these optimization problem formulations for a representative-size network. Index Terms—Backup tree, directed-link disjointness, fiber cut, integer linear programming (ILP), light path, light tree, mesh network, multicasting, protection, wavelength-division multiplexing (WDM).
Keyphrases
multicast session wdm optical mesh network backup tree light tree single link failure fiber cut dedicated protection mathematical formulation optimum cost several destination node sparse splitting constraint several multicast session wavelength-division multiplexing mesh network wavelength assignment optical splitter profit-maximizing model network operator multicast-capable switch architecture efficient routing single fiber bandwidth-intensive multicast application index term backup tree directed-link disjointness light path abstract recent advance optimization problem formulation integer linear programming chosen one primary counterpart representative-size network limited number
