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<p>Elastic optical networks (EON) represent a promising solution for future optical transport networks by effectively handling high bandwidth applications and QoS (Quality of Service) provision. However, link failure generates deficient resource management, affecting QoS requirements of variable traffic demands with specific requirements, mainly loss and blocking delay. This paper introduces hybrid protection with a flexible QoS provision (HP-FQ) scheme to address primary path protection assignment under all traffic behavior, static and dynamic. The HP-FQ scheme improves spectrum allocation, precisely frequency slot (FS), to optimize bandwidth utilization. This scheme performs a flexible differentiation using real-time QoS parameters to guarantee traffic needs. The developed FS cost formulation in the mathematical model enhances FS allocation for efficiently managing shared or dedicated paths, in that order, depending on traffic variability. The proposed HP-FQ algorithm integrates the FS cost formulation to resolve optimum path protection assignment (O-PPA) problems. Extensive experiments show that the proposed scheme optimizes FS allocation and reduces O-PPA time, loss, and blocking probability compared to the standard methods.</p>

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Joint Hybrid Protection with Flexible QoS Provision for Optimized Resource Assignment and Utilization over EON

  • 期刊论文

  • 发表日期：

    2025年1月10日

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  • Yassine Khlifi

摘要

Elastic optical networks (EON) represent a promising solution for future optical transport networks by effectively handling high bandwidth applications and QoS (Quality of Service) provision. However, link failure generates deficient resource management, affecting QoS requirements of variable traffic demands with specific requirements, mainly loss and blocking delay. This paper introduces hybrid protection with a flexible QoS provision (HP-FQ) scheme to address primary path protection assignment under all traffic behavior, static and dynamic. The HP-FQ scheme improves spectrum allocation, precisely frequency slot (FS), to optimize bandwidth utilization. This scheme performs a flexible differentiation using real-time QoS parameters to guarantee traffic needs. The developed FS cost formulation in the mathematical model enhances FS allocation for efficiently managing shared or dedicated paths, in that order, depending on traffic variability. The proposed HP-FQ algorithm integrates the FS cost formulation to resolve optimum path protection assignment (O-PPA) problems. Extensive experiments show that the proposed scheme optimizes FS allocation and reduces O-PPA time, loss, and blocking probability compared to the standard methods.