Dimensionamento de topologias lógicas em redes ópticas elásticas de telecomunicações com proteção dedicada

Abstract

In recent years, data traffic on telecommunications networks has increased significantly, due to several emerging Internet applications, such as streaming videos in high and ultra definition, images and data sharing on social networks, mobile equipment market exploration and smartphones, data centers and cloud computing. This increase in traffic demand, requires that telecommunications networks improve their structures and their management schemes to maintain a certain level of quality of the service. Additionaly, it is required a better use of resources and support to traffic load. In this context, this work proposes the development of new methods for traffic engineering support, for offline generation of logical topologies for transport networks that operates with dedicated protection in elastic optical networks. The dimensioning of logical topology in elastic networks, involve the establishment of lightpaths and spectrum allocation in the optical domain. The routing and spectrum allocation problem is known as RSA. We present two methods to generate optimized logical topologies from heuristics for routing and allocation of espectrum and considering genetic algorithms. Experiments show a reduction of up to 35% in the blocking probability.