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Research on Anti-jamming Methods and Technologies for Wireless Sensor Networks Based on Game Theory

Author: JiangYuan
Tutor: ZhuYanMin
School: Shanghai Jiaotong University
Course: Applied Computer Technology
Keywords: Wireless Sensor Network Anti-jamming Game Theory Nash Equilibrium Optimal Defense Policy
CLC: TN929.5
Type: Master's thesis
Year: 2012
Downloads: 116
Quote: 0
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Abstract


As wireless sensor network is more and more used in industrial areas and our daily life, it is being studied in depth. Wireless sensor network is a multi-hop network, which consists of large amount of cheap micro sensor nods with sensing capability, computing capability, data processing capability and wireless communication capability. These sensor nodes are deployed in a monitoring area and collect some useful data. Wireless sensor network integrates with microelectronic technology, sensor technology, wireless sensor technology, network technology and other advanced technologies, providing people with a new and convenient means of data collection and information processing. Sensor nodes are built in various sensors which can sensing the temperature, humidity, noise, pressure, gas composition, the size of a moving object, direction, speed and other physical qualities of interest to users. Wireless sensor network has been widely used in marine and field monitoring, building monitoring, earthquake and volcano monitoring and a variety of military fields. In recent years, sensor network has been used in traffic monitoring, environmental monitoring, forest fire prevention, water quality monitoring. With the depth of research on sensor network and industrialization, its security catches more and more attention.With a wide range of sensor network applications, it is playing a more and more important role in many fields. It can be used in real-time self-monitoring and tracking the remote target in military and civilian fields. The scenario is sometimes dangerous for people, such as the chemical industry, and sometimes a hostile scene, such as the battle field. In these scenarios, there exists some non-malicious interference from other communication equipment and some malicious interference caused artificially. The interference signal will make the wireless communication quality dropped drastically and reduce the data transmission performance. Therefore, how to effectively combat the interference and reduce the compact and destruction to sensor network and how to achieve high performance communication under the scenario of interference become the focus of attention from both academia and industry. As sensor networks use wireless open medium for communication, and wireless sensor nodes are usually exposed to indoor and outdoor environment, it is inevitably that interference from other communication equipment and form other malicious nodes will cause dropped communication performance. So, it is important to design effective anti-jamming methods and mechanisms for sensor network.Game theory is a mathematical tool for analysis and study of competition and cooperation mechanism between game participants, and is the theory for study optimal strategy under competition using rigorous mathematical model. In this article, we use game theory to analysis the interaction between the wireless senor network and the jammer node, and model it as a game. By analysis and solving the problem and finding the Nash equilibrium for this problem, we find the optimal anti-jamming strategy for the sensor network and the optimal jamming strategy for the jammer.

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