Location-aware energy efficient virtual network embedding in software-defined optical data center networks

Yue Zong, Yanni Ou, Ali Hammad, Koteswararao Kondepu, Reza Nejabati, Dimitra Simeonidou, Yejun Liu, Lei Guo

Research output: Contribution to journalArticle (Academic Journal)peer-review

48 Citations (Scopus)
447 Downloads (Pure)


To overcome the Internet ossification, network virtualization has been proposed as a promising method because of its advantages (e.g., on-demand and efficient resource allocation). Virtual network embedding (VNE) is one of the main challenges for network virtualization. Energy costs of servers in data centers (DCs) aremajor contributions to the power consumption in information and communication technology. Therefore, VNE should consider both acceptance ratio and power consumption. In this paper, a mixed integer linear programming model is proposed with the objective of minimizing the total power consumption in software- defined optical data center networks by reducing the active data centers and power-consuming network components. In addition, the coordinates of nodes and delay of links are considered for a more realistic scenario. Compared with the existing node ranking method, the proposed global topology resource (GTR) can effectively evaluate the possibility of each DC node to host virtual nodes. Based on the GTR method, we propose a location-aware energy efficient VNE algorithm, namely GTR-VNE. Simulation results show that GTR-VNE can obtain up to 9.3% and 5% improvement of power consumption and acceptance ratio compared with benchmarks. Furthermore, based on GTR and artificial intelligence ant colony optimization (ACO), another energy efficient algorithm, ACO-VNE, is proposed.ACO-VNE can obtain up to 28.7% improvement in power consumption compared with GTR-VNE. In addition, ACO-VNE has better performance in terms of revenue cost ratio and acceptance ratio.

Original languageEnglish
Pages (from-to)B58-B70
Number of pages13
JournalIEEE/OSA Journal of Optical Communications and Networking
Issue number7
Early online date31 May 2018
Publication statusPublished - 1 Jul 2018


  • Ant colony optimization
  • Data center networks
  • Energy efficiency
  • Software defined optical
  • Virtual network embedding.


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