Towards energy efficiency in virtual topology design of elastic optical networks

摘要

Elastic optical networks offer a reliable platform for achieving energy efficiency by supporting extensive optical grooming of variable-rate data traffic along with the traditional electrical data aggregation methods. The procedure of routing and spectrum allocation in a topology of nodes has explicit effect to the amount of consumed power. A new energy-efficient method for designing the virtual topology in IP-over-elastic networks is introduced and evaluated. It is concluded that it consumes less power under different elastic transponder types, it designs the virtual topology using fewer transponders, and finally, there is a slight increase in the number of end-to-end lightpath hops. The proposed method is characterized by high performance and low lightpath establishment complexity. Therefore, it is suitable for a broad range of network configurations and transponder types.