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In this paper we present a tabu search-based algorithm, which is dedicated to solving the routing and spectrum allocation problem in elastic optical networks. To evaluate performance of the proposed method, we carry a number of experiments on realistic network topologies. We compare our method with both optimal results yielded by the CPLEX solver and results obtained by heuristic algorithms that were...
In this article, we address the problem of static routing and spectrum allocation (RSA) in an elastic optical network (EON) with dedicated path protection (DPP) consideration. We formulate RSA-DPP as an Integer Linear Programming (ILP) problem. Since RSA is a difficult problem, we propose an Adaptive Frequency Assignment with Dedicated Path Protection (AFA-DPP) heuristic algorithm to provide near-optimal...
From the network layer perspective, the problem of burst losses is one of the most challenging problems which restrain the development of optical burst switching (OBS) networks. Indeed, OBS is a buffer-less technology and the consequent lack of guarantees for data delivery may affect significantly the quality of service (QoS) perceived by end users. To overcome these obstacles, dedicated network mechanisms...
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