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Leveraging Spectrum Sharing and Defragmentation to <span class="MathJax_Preview">p</span><script type="math/tex">p</script> -Cycle Design in Elastic Optical Networks | IEEE Journals & Magazine | IEEE Xplore

Leveraging Spectrum Sharing and Defragmentation to p -Cycle Design in Elastic Optical Networks


Abstract:

In this letter, a new protection technique, namely Spectrum Shared pre-configured cycles (SS-p-cycles), is proposed for survivable elastic optical networks. SS-p-cycles p...Show More

Abstract:

In this letter, a new protection technique, namely Spectrum Shared pre-configured cycles (SS-p-cycles), is proposed for survivable elastic optical networks. SS-p-cycles permit to cut spectrum usage and spectrum fragmentation ratio (SFR) by leveraging special spectrum sharing among multiple p-cycles that have common link(s). To compute SS-p-cycles, we first formulate an integer linear programming model to obtain the optimal solution in small instance, and then develop a time-efficient heuristic algorithm to solve large-scale instances. Simulation results have demonstrated that the proposed SS-p-cycles outperform conventional p-cycles without spectrum sharing in terms of spectrum usage and SFR.
Published in: IEEE Communications Letters ( Volume: 21, Issue: 3, March 2017)
Page(s): 508 - 511
Date of Publication: 01 December 2016

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