Abstract
In the real Internet of Everything scenario, many large-scale information systems can be converted into interdependent sensor networks, such as smart grids, smart medical systems, and industrial Internet systems. These complex systems usually have multiple interdependent sensor networks. Small faults or failure behaviors between networks may cause serious cascading failure effects of the entire system. Therefore, in this paper, we will focus on the security of interdependent sensor networks. Firstly, by calculating the size of the largest functional component in the entire network, the impact of random attacks on the security of interdependent sensor networks is analyzed. Secondly, it compares and analyzes the impact of cascading failures between interdependent sensor networks under different switching edge strategies. Finally, the simulation results verify the effect of the security of the system under different strategies, and give a better exchange strategy to enhance the security of the system. In addition, the research work in this article can help design how to further optimize the topology of interdependent sensor networks by reducing the impact of cascading failures.
Highlights
During the advent of the Internet of Things (IoT), the Internet has become widely applied in our society and life
To model the interdependent sensor networks, we transform the interdependent network into a cyber network and a physical network
By modeling the processes of cascading failures in models, we obtain the conclusions of which strategies have the best influences in enhancing interdependent network reliability
Summary
During the advent of the Internet of Things (IoT), the Internet has become widely applied in our society and life. The sensor networks consist of a data collection unit, a control unit, a communication unit, and a power unit into defined environments that have specific purposes [3,4,5]. The communication unit can exchange data with other systems [6]. The data collection unit is essential for the interdependent network since the data can be linked and importance can be evaluated [9]. To model the interdependent sensor networks, we transform the interdependent network into a cyber network and a physical network. This coupled network is named the Cyber-Physical System (CPS).
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