Acta Metallurgica Sinica(English letters) ›› 2015, Vol. 22 ›› Issue (5): 92-100.doi: 10.1016/S1005-8885(15)60686-0

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QoS-guaranteed energy saving routing strategy using SDN central control for backbone networks


  1. 1. College of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China 2. Key Laboratory of Universal Wireless Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2015-06-16 Revised:2015-09-21 Online:2015-10-30 Published:2015-10-30
  • Contact: Hong-Yu PENG
  • Supported by:
    The authors would like to thank the reviewers for their detailed reviews and constructive comments, which have helped improve the quality of this paper. This work was supported by the National High-Tech R&D Program (2015AA01A705) and Beijing Municipal Commission of Education (The city’s vehicle sensing grid construction based on public transportation network).

Abstract: This paper targets on energy saving and considers network responding time for backbone networks. The objective is to find idle links as many as possible which can be put into sleep mode under the situation of quality of service (QoS)-guaranteed. This paper proposes a software defined network (SDN) based routing strategy which is especially aimed at QoS-guaranteed energy saving for backbone networks. Under SDN structure, the topology change of network can be detected directly by network controller. And network can be managed more easily and effectively. Based on the open shortest path first (OSPF) protocol, network topology can be changed as little as possible in our strategy. So, the network reconfiguring time caused by the energy saving strategy will be decreased dramatically. This makes the strategy more feasible. Then the backbone network energy optimizing problem is transformed to the maximum clique problem (MCP). And, this paper designed a routing strategy called backbone networks energy saving strategy (BNESS) for energy saving in backbone networks. Simulation result shows that our proposed strategy can save energy and QoS can be guaranteed.

Key words: Energy efficient networks, Backbone, Software defined network (SDN), Open shorted path first (OSPF)