Research And Design Of Wireless Sensor Network Based On SDN Technology

With the development and maturity of sensor manufacturing technology and wireless network communication technology,the use of miniaturized,highly integrated and versatile sensor nodes becomes a reality.These sensor nodes with information sensing,data processing and wireless communication capability form a wireless sensor network through self-organizing connection,cooperate to perceive,collect and process and transmit various natural environment data.The Software-Defined Network(SDN)provides a flexible way for network updates and reconfiguration for wired networks.For today’s traditional wireless sensor networks,the introduction of the SDN architecture is still relatively backward compared to wired networks state,because the lack of a separate control channel in the WSN,which will lead to higher network control load,wireless network is relatively unstable,link failure situation often occurs.For this defect,academic and engineering technology is still lack of solution.The wireless sensor network as a future network has a huge significance,still faced with data and control plane coupling degree is too high;different manufacturers of products between the compatibility is not good enough,resulting in the entire network node hardware recycle flexibility is very low.In order to solve the above problems,this paper presents a design scheme of wireless sensor network based on SDN technology.By using the characteristics of SDN,the wireless sensor network is divided into two layers-the control layer and the data layer,and the wireless sensor network in the control and data separation purposes.In this new program by adding an energy-based sleep scheduling algorithm to extend the network life cycle.In addition,the software-defined wireless sensor network(SDWSN)proposed in this paper verifies its security using real wireless channels that suffer from random link faults,and analyzes the impact of link failures on the control traffic in the new architecture.The simulation results show that the proposed network model can manage the sensor nodes through the global controller to solve the problem that the control and data coupling degree is too high in the WSN.At the same time,the network life cycle is extended by the energy efficiency sleep scheduling algorithm,and the fault condition gives the appropriate solution to increase the robustness of the new architecture while reducing the control flow load in the network.