认知无线电网络中的频谱感知安全机会路由协议  

Spectrum-aware Secure Opportunistic Routing Protocol in Cognitive Radio Networks

作　　者：王露 白光伟 沈航 王天荆[4] WANG Lu;BAI Guang-wei;SHEN Hang;WANG Tian-jing(College of Computer Science and Technology,Nanjing Tech University,Nanjing 211816,China;State Key Laboratory for Novel Software Technology,Nanjing University,Nanjing 210093,China;National Engineering Research Center for Communication and Network Technology,Nanjing University of Posts and Telecommunications,Nanjing 210003,China)

机构地区：[1]南京工业大学计算机科学与技术学院,南京211816 [2]南京大学计算机软件新技术国家重点实验室,南京210093 [3]南京邮电大学通信与网络技术国家工程研究中心,南京210003 [4]南京工业大学计算机科学与技术学,院南京211816

出　　处：《计算机科学》2018年第10期166-171,共6页Computer Science

基　　金：本文受国家自然科学基金项目(61502230,61073197,61501224);江苏省自然科学基金项目(BK20150960);江苏省普通高校自然科学研究项目(15KJB520015);南京市科技计划项目(201608009);南京大学计算机软件新技术国家重点实验室资助项目(KFKT2017B21);南京邮电大学通信与网络技术国家工程研究中心资助项目;江苏省六大高峰人才基金资助项目(第八批)资助。

摘　　要：针对认知无线电网络中频谱的动态特性及潜在的节点选择性转发问题,提出频谱感知安全机会路由S2OR协议。在频谱感知阶段,通过对主用户活动建模来分析认知节点之间链路的可用概率。在路由选择阶段,采用信任管理方式来考查节点转发行为的可靠性,以便选择可信任的中继节点并保证数据传输的完整性。协议通过获取局部网络状态信息,计算由链路可用概率、链路质量和节点信任度构成的综合型指标——期望吞吐率,允许认知节点在此基础上机会式地选择候选转发节点与数据信道。仿真结果表明,S2OR能够很好地适应频谱动态特性,获取较高的吞吐量,同时减小节点恶意攻击带来的影响。This paper proposed a spectrum-aware secure opportunistic routing(S2OR)protocol against the dynamic characteristics of spectrum and the potential selective forwarding attack in cognitive radio networks.During the spectrum sensing phase,the availability probability of link among cognitive nodes is analyzed by modeling primary user activity.During the routing selection phase,a trust management model is exploited to examine node’s reliability for packet forwarding,so as to select relay nodes with high trustability and ensure the integrity of data transmission.With the local information,a comprehensive routing metric called the expected throughput,consisting of link availability probability,link quality and node’s trustability,is computed.On this basis,cognitive nodes can opportunistically select candidate forwarding nodes and the corresponding data channels.Simulation results demonstrate that S2OR can well adapt to the dynamics of spectrum,result in higher throughput and reduce the impacts of malicious attacks at the same time.

关 键 词：认知无线电 机会路由 频谱感知 信任管理 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]