International Journal of Computer Science Issues

More than a traditional journal...

The development of Internet traffic in recent years led telecommunication operators to increase networks bandwidth and motivate evolution of traditional WDM network towards SLICE networks (Spectrum-sLICed Elastic optical path network). The SLICE networks such as all-optical network inherit the problems of power consumption. Therefore, we present, in this paper, an efficient energy routing algorithm and spectrum allocation with connections rerouting under spectrum contiguity and spectrum continuity constraints. When a connection request must be established and there are no adequate and continuous spectrum resources between a source and a destination node, rerouting technique is used to move some existing connections to free resources. To meet such a connection request, and for power consumption management of a service requested, our proposition takes into account the path length, the number of links on optical paths and appropriate modulation format. Analysis of the results of our algorithm to the existing routing algorithm RMLSA in the literature shows that our approach has better performance in terms of the connections established in the network.