Proactive defragmentation in elastic optical networks under dynamic load conditions
Rights accessOpen Access
European Commission's projectMETRO-HAUL - METRO High bandwidth, 5G Application-aware optical network, with edge storage, compUte and low Latency (EC-H2020-761727)
The main weakness of elastic optical networks (EON), under dynamic traffic conditions, stems from spectrum fragmentation. A lot of research efforts have been dedicated during recent years to spectrum defragmentation. In this work, a thorough study about proactive defragmentation is carried out. Effects of the different defragmentation parameters on the EON performance are analyzed, and appropriate values of the defragmentation period, which guarantee suitable network performance while keeping the network control complexity at reasonable values, are obtained by means of extensive simulations. Benefit obtained by applying different defragmentation strategies, in terms of increase in the supported load at a given bandwidth blocking probability, is also reported. Different traffic conditions and network topologies are simulated to assess the validity of the obtained results.
The final publication is available at Springer via http://dx.doi.org/10.1007/s11107-018-0767-7
CitationComellas, J., Vicario, L., Junyent, G. Proactive defragmentation in elastic optical networks under dynamic load conditions. "Photonic network communications", 13 Abril 2018, vol. 36, núm. 1, p. 26-34.
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