电信科学 ›› 2016, Vol. 32 ›› Issue (3): 60-67.doi: 10.11959/j.issn.1000-0801.2016051

• 研究与开发 • 上一篇    下一篇

协作频谱感知中的动态信任评估机制

王美璎1,冯景瑜1,2,卢光跃1,韩定坤1   

  1. 1 西安邮电大学通信与信息工程学院,陕西 西安 710121
    2 中国科学院信息工程研究所信息安全国家重点实验室,北京 100093
  • 出版日期:2016-03-20 发布日期:2016-03-28
  • 基金资助:
    国家自然科学基金资助项目;陕西省自然科学基础研究计划基金资助项目;陕西省自然科学基础研究计划基金资助项目;中国科学院信息安全国家重点实验室开放课题

A dynamic trust evaluation scheme for cooperative spectrum sensing

Meiying WANG1,Jingyu FENG1,2,Guangyue LU1,Dingkun HAN1   

  1. 1 Institute of Communication Engineering,Xi’an University of Posts and Telecommunications,Xi’an 710121,China
    2 State Key Laboratory of Information Security,Institute of Information Engineering,Chinese Academy of Sciences,Beijing 100093,China
  • Online:2016-03-20 Published:2016-03-28
  • Supported by:
    The National Natural Science Foundation of China;The National Science Foundation of Shaanxi Province;The National Science Foundation of Shaanxi Province;The Open Foundation of State Key Laboratory of Information Security

摘要:

针对动态性SSDF攻击对协作频谱感知技术的危害性,实时观察分析认知用户的感知行为,提出一种动态信任评估机制。根据认知用户的历史感知变化情况,引入时间衰减因子、加性奖励因子和加性惩罚因子,计算出随时间和协作次数不断变化的动态信任值,选取可信认知用户参与协作感知,提高了数据融合中心的协作判决准确性。仿真结果表明,动态信任机制可以有效抑制恶意用户的信任值增长,降低对“OR”、“AND”和“Majority”3种常用协作频谱感知数据融合准则的攻击成功率。

关键词: 认知无线电, 协作频谱感知, 动态信任, SSDF攻击

Abstract:

Considering the harmful effect of dynamic SSDF attack against cooperative spectrum sensing technologies,a dynamic trust evaluation scheme based on the real-time observation and analysis of cognitive users’ sensing behaviors was proposed.Time attenuation,additive reward and additive penalty factors based on the historical sensing variation of cognitive users were introduced to calculate the dynamic trust value which changes with time and the number of collaborations.Meanwhile,trusted cognitive users were selected to participate in cooperative sensing,and thus improving the accuracy of the final sensing decision.Simulation results show that the scheme can effectively suppress the growth of trust of malicious users,and reduce the attack success rate for“OR”,“AND”and“Majority”which are three kinds of cooperative spectrum sensing data fusion schemes.

Key words: cognitive radio, cooperative spectrum sensing, dynamic trust, SSDF attack

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