摘要
针对移动自组织网络路由的可靠运行和安全保障问题,提出一种基于Dempster-Shafer证据理论的节点信任评估模型。利用历史交互信息计算直接信任度,通过邻居节点的推荐度量值获取间接信任度。对直接和间接信任度进行权重修正后根据Dempster组合规则合成,得到节点全局信任度。利用该模型对优化链络状态路由协议的多点中继技术进行优化,设计改进的路由协议TOLSR。仿真结果表明,TOLSR协议能发现和抑制网络的自私节点和恶意节点,有效提高移动自组织网络的可靠性,证明了该信任度评估模型的有效性和合理性。
Specific to reliability and security problems in Mobile Ad Hoc Network（ MANET）,a trust evaluation model based on Dempster-Shafer（ D-S） evidence theory is proposed. Direct trust degree is calculated w ith historical interaction information and indirect trust is obtained from neighbor nodes＇ commendations. The direct trust degree and indirect trust are combined according to Dempster combination rule after being amended w ith w eight,to obtain node＇s comprehensive trust finally. On this basis,it optimizes the M ulti-point Relaying（ M PR） technology in Optimized Link State Routing Protocol（ OLSR）,and proposes an improved routing protocol（ TOLSR）. Simulation result show s that the model can discoveries selfish nodes and malicious nodes,thus effectively improves the reliability of M ANET,w hich also proves the validity and rationality of the trust evaluation model.
出处
《计算机工程》
CAS
CSCD
北大核心
2015年第4期135-139,共5页
Computer Engineering
基金
中国科学院先导科技专项基金资助项目"服务于海云计算的无线传输技术研究"(XDA06011100)
上海市科委科技小巨人培育企业基金资助项目(13HX1180800)
上海市经信委战略性新兴产业基金资助项目(BY2JJXA1001)
