#5952. Network-state-dependent routing and route-dependent spectrum assignment for PRMLSA problem in all-optical elastic networks

July 2026publication date
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Journal’s subject area:
Electrical and Electronic Engineering;
Computer Networks and Communications;
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Abstract:
The advent of Elastic Optical Networks (EON) has led to significant improvements in optical network spectrum utilization when compared to Wavelength Division Multiplexing Optical Networks. However, the EON brought challenges to be explored, notably the Power, Routing, Modulation Level and Spectrum Assignment (PRMLSA) problem. This article aims to explore techniques for the PRMLSA problem, being developed two strategies named Shortest and Least Allocated (SLA) Path and Route-Based Spectrum Assignment (RBSA), which, respectively, include the link power spectral density inspection dynamic for routing and a physical layer factor (distance traveled) for Spectrum Assignment. Furthermore, a simplified version of the Adaptive Power Assignment (APA) [1] algorithm is presented, in which a power value between the minimum necessary and the maximum allowed is assigned to the signal.
Keywords:
Dynamic routing; Elastic optical network; Non-linearities; Power assignment; Route-based spectrum allocation

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