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Genetic algorithm to design logical topologies in reconfigurable WDM networks

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Abstract

A new method to design logical topologies based on genetic algorithms is presented. Not only does the algorithm determine which nodes should be connected by means of lightpaths with the aim of minimizing congestion, but it also solves the routing and wavelength assignment problem. In this way, the algorithm guarantees that the logical topology obtained can be embedded in the optical network subject to the available set of resources. The algorithm is effective in terms of both congestion and fairness. For instance, when compared with other work, the congestion is significantly reduced (from 20% to 75% depending on the matrix of traffic considered), and the fairness, when evaluated in terms of the Jain index, is generally higher than 0.94. Moreover, the algorithm brings advantages when employed in dynamic scenarios where the logical topology is frequently reconfigured, as it is fast and, in contrast to other algorithms previously proposed, the calculation process can be stopped at any time (if required) in order to give the best virtual topology found up to the moment.

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Authors and Affiliations

  1. Department of Signal Theory, Communications and Telematic Engineering, University of Valladolid, Campus “Miguel Delibes”, 47011, Valladolid, Spain

    Ramón J. Durán, Ignacio de Miguel, Noemí Merayo, Patricia Fernández, Juan Carlos Aguado, Rubén M. Lorenzo & Evaristo J. Abril

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  1. Ramón J. Durán
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  2. Ignacio de Miguel
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  3. Noemí Merayo
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  4. Patricia Fernández
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  5. Juan Carlos Aguado
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  6. Rubén M. Lorenzo
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  7. Evaristo J. Abril
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Correspondence to Ramón J. Durán.

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Durán, R.J., de Miguel, I., Merayo, N. et al. Genetic algorithm to design logical topologies in reconfigurable WDM networks. Photon Netw Commun 17, 21–33 (2009). https://doi.org/10.1007/s11107-008-0140-3

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  • DOI: https://doi.org/10.1007/s11107-008-0140-3

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