Secure type-based multiple access: Transmission strategy and analysis for perfect secrecy
Secure type-based multiple access: Transmission strategy and analysis for perfect secrecy
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DOI：
10.1109/cig.2010.5592683
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发表时间：
2010-09
期刊：
影响因子：
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通讯作者：
Hyoungsuk Jeon;Daesung Hwang;Hyuckjae Lee;J. Ha;Jinho Choi
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文献类型：
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作者：
Hyoungsuk Jeon;Daesung Hwang;Hyuckjae Lee;J. Ha;Jinho Choi
由于传感器和融合中心(FC)之间无线通信的性质，无线传感器网络(WSN)很容易受到威胁和攻击，因此经常需要确保传输不被任何可能的窃听。本文研究了传感器过度部署时的窃听问题，并将传感器与盟军FC之间的信道建模为时变瑞利衰落信道。提出了一种基于类型多址协议的传输方案，在该方案中，只有强、弱信道增益的传感器以预定的方式报告它们的判决。该方案利用无线信道以多用户分集的形式表现出的随机行为，通过精心设计强、弱信道增益传感器对盟军FC的不同作用，可以迷惑敌方FC进行决策。最终，它保证了信息理论措施承诺的完美保密性。我们还分别分析了盟军和敌方FCS的检测错误概率和模糊性。
Since wireless sensor networks (WSNs) are vulnerable to threats and attacks due to the nature of wireless communications between sensors and fusion center (FC), it is often necessary to secure transmissions from any possible eavesdropping. In this paper, we study the eavesdropping issue when sensors are over-deployed and the channels between sensors and the ally FC are modeled as time-varying Rayleigh fading channels. We propose a transmission scheme in which only the sensors of strong and weak channel gains report their decisions in a predetermined way based on type-based multiple access protocol. By taking advantage of random behaviors of wireless channels in the form of the multiuser diversity and carefully design different roles of sensors of strong and weak channel gains to the ally FC, the proposed scheme can confuse the enemy FC in making a decision. Eventually, it guarantees the perfect secrecy promised by an information theoretic measure. We also analyze detection error probability and equivocation at the ally and enemy FCs, respectively.