Differentiated Resource Allocation in Resilient SDM-EON

Resilience is a critical issue to the Space-Division Multiplexing Elastic Optical Networks technology due to the enormous amount of data these networks carry. This paper proposes a routing, modulation, spectrum, and core allocation algorithm supporting differentiated resilience services. The proposed mechanism uses classes of service to provide transport services to requests for lightpath establishment. It reduces wastage of spectrum in the provisioning of protected services and proposes a spectrum release mechanism. The results obtained demonstrate the high efficiency of the proposed algorithm in the provisioning of resilience to high priority requests compared to similar algorithms in the literature, reaching a lower blocking probability of up to 60%.