A Survey on SDN based energy-efficiency approaches in IoT: ‎Systematic‎ survey on energy conservation methods in IoT

The Internet of Things, enabled by the rapid spread of telecommunication technologies, has become an integral part of our lives. However, it still faces some challenges that hinder its wide deployment. the number of connected things is counting in billions which theoretically generates massive data that leads to important energy consumption and expands the CO2 emission in Cloud infrastructures and backbone networks, also reduce the life-time of things at the Edge level. Software-Defined Networking is a new paradigm based on the centralization of large-scale network infrastructure control, which offers the flexibility of software and hardware device management. In this survey paper, we highlight the main energy-efficiency existing approaches and their limits in SDN architectures for IoT infrastructures.