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arXiv 2001.11664cs.ITcs.CReess.SPmath.IT
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衰落干扰下保密性能分析的QoS-aware随机空域PLS模型

QoS-aware Stochastic Spatial PLS Model for Analysing Secrecy Performance under Eavesdropping and Jamming

Bhawna Ahuja, Deepak Mishra, Ranjan Bose

摘要:

无线通信本质上容易受到窃听和干扰攻击,因此在物联网等资源受限的网络中,确保无线通信的安全变得更具挑战性。为此,物理层安全(PLS)由于其低复杂度而获得了显着的关注。在本文中,我们解决了保密分析中的随机节点间距离的问题,并开发了一个全面的服务质量(QoS)感知PLS框架的分析窃听和干扰能力的攻击者。所提出的解决方案涵盖了空间随机部署的合法节点和攻击者。我们使用基于节点间距离的概率分布函数对这两种攻击的保密中断性能进行了验证。该模型考虑到了潜在的QoS要求,其中包括合法用户之间的最大距离驱动的发射功率和接收机的灵敏度所产生的实际限制。提出了窃听区的概念,分析了干扰功率对窃听区的影响。渐近保密中断概率的封闭形式的表达式推导出所需的安全级别对攻击者的攻击能力的最佳系统参数的设计提供见解。分析框架,数值结果验证,建立所提出的解决方案提供了潜在的准确的PLS性能和关键设计的角度来看,从合法用户和攻击者的观点的表征。

英文摘要:

Securing wireless communication, being inherently vulnerable to eavesdropping and jamming attacks, becomes more challenging in resource-constrained networks like Internet-of-Things. Towards this, physical layer security (PLS) has gained significant attention due to its low complexity. In this paper, we address the issue of random inter-node distances in secrecy analysis and develop a comprehensive quality-of-service (QoS) aware PLS framework for the analysis of both eavesdropping and jamming capabilities of attacker. The proposed solution covers spatially stochastic deployment of legitimate nodes and attacker. We characterise the secrecy outage performance against both attacks using inter-node distance based probabilistic distribution functions. The model takes into account the practical limits arising out of underlying QoS requirements, which include the maximum distance between legitimate users driven by transmit power and receiver sensitivity. A novel concept of eavesdropping zone is introduced, and relative impact of jamming power is investigated. Closed-form expressions for asymptotic secrecy outage probability are derived offering insights into design of optimal system parameters for desired security level against the attacker's capability of both attacks. Analytical framework, validated by numerical results, establishes that the proposed solution offers potentially accurate characterisation of the PLS performance and key design perspective from point-of-view of both legitimate user and attacker.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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