Improving the Performance of SDM-EON Through Demand Prioritization: A Comprehensive Analysis
| Autor: | Danilo Borquez-Paredes, Nicolas Jara, Alejandra Beghelli, Astrid Lozada, Ricardo Olivares, Ariel Leiva, Gabriel Saavedra, Patricia Morales |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Static routing
space-division multiplexing General Computer Science Computer science Distributed computing Elastic optical networks General Engineering Sorting TK1-9971 Resource (project management) Shortest path problem General Materials Science Network performance Resource management network capacity physical-layer impairments Electrical engineering. Electronics. Nuclear engineering Routing (electronic design automation) Heuristics resource assignment |
| Zdroj: | IEEE Access, Vol 9, Pp 63475-63490 (2021) |
| ISSN: | 2169-3536 |
| Popis: | This paper studies the impact of demand-prioritization on Space-Division Multiplexing Elastic Optical Networks (SDM-EON). For this purpose, we solve the static Routing, Modulation Level, Spatial Mode, and Spectrum Assignment (RMLSSA) problem using 34 different explainable demand-prioritization strategies. Although previous works have applied heuristics or meta-heuristics to perform demand-prioritization, they have not focused on identifying the best prioritization strategies, their inner operation, and the implications behind their good performance by thorough profiling and impact analysis. We focus on a comprehensive analysis identifying the best explainable strategies to sort network demands in SDM-EON, considering the physical-layer impairments found in optical communications. Also, we show that simply using the common shortest path routing might lead to higher resource requirements. Extensive simulation results show that up to 8.33% capacity savings can be achieved on average by balanced routing, up to a 16.69% capacity savings can be achieved using the best performing demand-prioritization strategy compared to the worst-performing ones, the most used demand-prioritization strategy in the literature (serving demands with higher bandwidth requirements first) is not the best-performing one but the one sorting based on the path lengths, and using double-criteria strategies to break ties is key for a good performance. These results are relevant showing that a good combination of routing and demand-prioritization heuristics impact significantly on network performance. Additionally, they increase the understanding about the inner workings of good heuristics, a valuable knowledge when network settings forbid using more computationally complex approaches. |
| Databáze: | OpenAIRE |
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