Energy Efficient Dynamic Virtual Optical Network Embedding in Sliceable-Transponder-Equipped EONs
Min Zhu, Pan Gao, Jiao Zhang, Xiaobo Zeng, Shengyu Zhang · 2017
We propose a novel energy efficient virtual optical network embedding (VONE) scheme over sliceable-transponder-equipped elastic optical networks (EONs). In the scheme, two energy-saving methods for data center (DC) and transponder (TP) are designed for node mapping and link mapping, respectively. During dynamic VONE, two schemes are developed: i) DC-EA scheme which only considers DC energy-saving in the node mapping; and ii) DC&TP-EA scheme which considers the energy saving for both the DCs and TPs, in the node mapping and link mapping, respectively. In order to evaluate the energy-saving performance of our proposed scheme, a benchmark algorithm is also realized which tries to maintain traffic-load balancing (TB) without any energy-saving consideration. The simulation results demonstrated that our proposed DC&TP-EA scheme achieves a maximum power saving, compared with the DC-EA and TB schemes. Also, the effect of the DC-EA gets very remarkable in terms of energy saving especially when the traffic load is smaller. With the increase of traffic load, the DC&TP-EA has higher energy-saving efficiency, due to the fact that the TP energy-saving plays a more and more important role.