Securing Cooperative Spectrum Sensing against Rational SSDF Attack in Cognitive Radio Networks
Securing Cooperative Spectrum Sensing against Rational SSDF Attack in Cognitive Radio Networks
复制标题
确保认知无线电网络中的协作频谱感知免受理性 SSDF 攻击
DOI：
10.3837/tiis.2014.01.001
复制
发表时间：
2014-01-29
影响因子：
1.5
通讯作者：
Zhang, Liang
中科院分区：
文献类型：
--
作者：
Feng, Jingyu;Zhang, Yuqing;Zhang, Liang
协作频谱感知被认为是提高稀缺无线频谱资源利用率的有力手段。然而，大多数CS方案都假设所有次用户(SU)都是诚实的，从而为恶意SU发起频谱感知数据篡改攻击(SSDF攻击)提供了机会。为了打击这种行为不端的行为，最近已经做出了努力，建立信托计划。在这篇文章中，我们认为，用传统的信任方案来支持CS是不够的。文中发现了合理的SSDF攻击。与简单的SSDF攻击不同，Rational SSDF攻击者在少数感兴趣的主用户(PU)而不是所有PU上发送错误的感测数据。在这种情况下，理性的SSDF攻击者可以保持较高的可信性，导致传统信任方案难以检测出恶意SU。同时，针对合理的SSDF攻击，提出了一种基于信任机制的防御方案。仿真结果表明，该方案能够成功地降低有理SSDF的功率，从而保证了码分多址的性能。
Cooperative spectrum sensing (CSS) is considered as a powerful approach to improve the utilization of scarce radio spectrum resources. However, most of CSS schemes assume all secondary users (SU) are honest, and thus offering opportunities for malicious SUs to launch the spectrum sensing data falsification attack (SSDF attack). To combat such misbehaved behaviors, recent efforts have been made to trust schemes. In this paper, we argue that powering CSS with traditional trust schemes is not enough. The rational SSDF attack is found in this paper. Unlike the simple SSDF attack, rational SSDF attackers send out false sensing data on a small number of interested primary users (PUs) rather than all PUs. In this case, rational SSDF attackers can keep up high trustworthiness, resulting in difficultly detecting malicious SUs in the traditional trust schemes. Meanwhile, a defense scheme using a novel trust approach is proposed to counter rational SSDF attack. Simulation results show that this scheme can successfully reduce the power of rational SSDF, and thus ensure the performance of CSS.