一种新的无线网状网可信路由

摘要

Because of the inherent characteristics of wireless mesh networks (WMN), the existing trust models are not applicable. This paper proposes a novel subjective logic based reputation model to detect and isolate malicious nodes in WMN. The model can also differentiate between malicious packet drop and the packet drop due to poor link quality. The model is applied to radio-metric ad hoc on-demand distance vector routing (RMAODV) to obtain a trusted routing T-AODV. Simulation results show that the proposed scheme can effectively evaluate trustworthiness of nodes, resist attacks to some extent and improve overall reliability, robustness and security of the network.%由于现有信任模型不能直接应用于无线网状网,为此提出了一种基于主观逻辑的信誉模型.该模型不但能监测和隔离WMN中的恶意节点,而且能区分恶意丢包和由于链路质量造成的丢包.将该模型应用到无线电度量的按需距离矢量路由协议(RM-AODV)中,得到了一个可信的路由协议T-AODV.仿真结果表明,所给出的机制能有效抵御黑洞、灰洞等网络攻击,提高网络可靠性、鲁棒性及安全性.网络中存在的恶意节点越多,这种优势越明显.