A trust mechanism-based channel assignment and routing scheme in cognitive wireless mesh networks with intrusion detection |
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Authors: | Guofeng Wu Jing Zhang Zhaopan He |
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Affiliation: | Institute of Information Engineering,Information Engineering University,Zhengzhou 450002,China |
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Abstract: | Cognitive Wireless Mesh Networks (CWMN) is a novel wireless network which combines the advantage of Cognitive Radio (CR) and
wireless mesh networks. CWMN can realize seamless integration of heterogeneous wireless networks and achieve better radio
resource utilization. However, it is particularly vulnerable due to its features of open medium, dynamic spectrum, dynamic
topology, and multi-top routing, etc.. Being a dynamic positive security strategy, intrusion detection can provide powerful safeguard to CWMN. In this paper, we
introduce trust mechanism into CWMN with intrusion detection and present a trust establishment model based on intrusion detection.
Node trust degree and the trust degree of data transmission channels between nodes are defined and an algorithm of calculating
trust degree is given based on distributed detection of attack to networks. A channel assignment and routing scheme is proposed,
in which selects the trusted nodes and allocates data channel with high trust degree for the transmission between neighbor
nodes to establish a trusted route. Simulation results indicate that the scheme can vary channel allocation and routing dynamically
according to network security state so as to avoid suspect nodes and unsafe channels, and improve the packet safe delivery
fraction effectively. |
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Keywords: | Cognitive Wireless Mesh Networks (CWMN) Intrusion detection Trust mechanism Channel assignment Routing |
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