Computation and Key Distribution Equilibrium for Virtual Optical Network Embedding Over Elastic Optical Networks Integrated With Quantum Key Distribution

With the development of optical networks integrated with quantum key distribution (QKD), the security of data transmission in virtual optical network has attracted increasing attention from researchers. In the existing security virtual optical network embedding (VONE) over elastic optical networks (EONs) integrated with QKD, the shortest path algorithm is used to reduce the consumption of security keys. In this paper, the concept and theory of computation and key distribution equilibrium (CKDE) is proposed. An integer linear programming model and a heuristic algorithm based on CKDE are presented for VONE over EONs integrated with QKD, where a node rank based on CKDE is introduced and the minimal element method is used to find a solution of VONE. Simulation experiments demonstrate that the proposed model and algorithm outperform existing approaches in terms of acceptance ratios, system revenues, and resource utilization. Specifically, the proposed algorithm achieves improvements of at least 35.1% in acceptance ratios and 49.6% in both system revenues and key resource utilizations compared to other heuristic algorithms.