access icon free Design of energy efficient optical networks with software enabled integrated control plane

The growing energy consumption has posed new challenges for the future development of networks. Some earlier work has proposed solutions to improve energy consumption based on the existing control plane, for example, node/links sleeping. This study presents a new possibility to reduce network energy consumption by proposing a new integrated control plane structure utilising Software Defined Networking technologies. The integrated control plane increases the efficiencies of exchanging control information across different network domains, while introducing new possibilities to the routing methods and the control over quality of service (QoS). The structure is defined as an overlay generalised multi-protocol label switching (GMPLS) control model. With the defined structure, the integrated control plane is able to gather information from different domains (i.e. optical core network and the access networks), and enable energy efficiency networking over a wider area. In the case presented, the integrated control plane collects the network energy related information and the QoS requirements of different types of traffic. This information is used to define the specific group of traffic's (flow's) routing behaviours. With the flexibility of the routing structure, results show that the energy efficiency of the network can be improved without compromising the QoS for delay/blocking sensitive services.

Inspec keywords: routing protocols; telecommunication traffic; overlay networks; quality of service; energy conservation; optical fibre networks; telecommunication control; multiprotocol label switching; control engineering computing

Other keywords: optical core network; software enabled integrated control plane structure; energy efficiency; telecommunication traffic; energy consumption; routing method; node-link sleeping; software defined networking technology; delay-blocking sensitive service; access network; overlay GMPLS control model; quality of service; QoS

Subjects: Control engineering computing; Multiplexing and switching in optical communication; Protocols; Communication network design, planning and routing; Control applications in optical communication; Protocols; Optical fibre networks

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