Hybrid routing based RMSA algorithm for service delay aware applications in elastic optical networks

Abstract

A K-Hybrid Paths-based Routing, Modulation, and Spectrum Assignment (RMSA) algorithm is proposed for Elastic Optical Networks (EONs). Simulation experiments on realistic network topologies evaluate the algorithm’s performance. Results confirm that the proposed K-Hyb-RMSA algorithm significantly reduces connection blocking under both low and high traffic loads compared to benchmarks such as Shortest Path-RMSA, K-Shortest Paths-RMSA, K-Disjoint Paths RMSA, and Load-Balancing-RMSA algorithms. Moreover, it inherits resilience similar to the K-Disjoint Paths-based RMSA algorithm while maintaining a lower request-blocking probability. Notably, the proposed algorithm does not introduce additional service provisioning delays observed with state-of-the-art load-balancing RMSA algorithms.