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首页> 外文期刊>IOSR journal of electronics and communication engineering >Enhanced Spectrum Handoff Security Mechanism In Cognitive Radio Network
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Enhanced Spectrum Handoff Security Mechanism In Cognitive Radio Network

机译：Enhanced Spectrum Handoff Security Mechanism In Cognitive Radio Network

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摘要

Cognitive radio (CR) is a lrend selling imovation fully inient on using the specirum groups which are unused in an astute and dynamic manner. The portions of range or spectrum groups which are not utilized, are classified "range openings (spectrum holes)" or "blank areas (white space)". Process of range or spectrum allocation is for minimizing any possibility of interference between secondary and primary users. But CR technology faces various challenges because of the varying nature of the range available, and also the different quality of service requirements of various services. So in this work we introduce a cognitive user emulation attack (CUEA) in a cognitive radio network (CRN), which can be exploited by intruders during spectrum handoff. Then, we propose an enhanced spectrum handoff security mechanism based on fuzzy logic that can successfully counter such an attack by introducing a coordinating cognitive user that computes the level of trust of each cognitive user based on its behavioural characteristics and users can be effectively identified as malicious or not by looking up the trust values. MATLAB simulation is used to measure the performance of proposed mechanism. The simulation results show that the utility of the proposed mechanism in terms of its probability error in correctly identifying users, throughput rate, and transmission delay.

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