基于双层模糊逻辑信任的OLSR安全路由协议  

Secure OLSR Routing Protocol Based on Two-layer Fuzzy Logic Trust Model

作　　者：刘杰 刘光杰 LIU Jie;LIU Guang-Jie(School of Electronics and Information Engineering,Nanjing University of Information Science and Technology,Nanjing 210044,China)

机构地区：[1]南京信息工程大学电子与信息工程学院,南京210044

出　　处：《计算机系统应用》2022年第9期241-249,共9页Computer Systems & Applications

摘　　要：由于移动自组网的开放性、分散性的特点,导致传统的OLSR信任模型存在无法明确量化节点的信任指标和忽视节点的网络环境的问题.针对上述问题,本文提出一种基于环境自适应决策的双层模糊逻辑信任模型,并与OLSR协议搭建了EFT-OLSR协议.该模型划分为参数提取模块、双层模糊推理模块、决策模块.首先选取节点剩余能量(P),阻止隐式的自私攻击;其次通过运用改进的双层模糊逻辑结构,限制计算节点信任指标的复杂度;最后根据网络环境动态调整路由协议中的信任阈值.实验表明, EFT-OLSR协议在数据包传递率(PDR)、平均端到端延迟、丢包率方面优于现有的FT-OLSR信任模型.Due to the open and decentralized characteristics of mobile ad hoc networks, the traditional optimized link state routing(OLSR) trust model cannot clearly quantify the trust indexes of nodes and ignores the network environments of nodes. To solve the above problems, this study proposes a two-layer fuzzy logic trust model based on environmentadaptive decision-making and constructs an EFT-OLSR protocol with the OLSR protocol. The model is divided into a parameter extraction module, a two-layer fuzzy reasoning module, and a decision-making module. To start with, the node residual energy(P) is selected to prevent implicit selfish attacks;then, the complexity of the trust indexes of the computing nodes is limited by using the improved two-layer fuzzy logic structure;finally, the trust threshold in the routing protocol is dynamically adjusted according to the network environment. Experiments show that the EFT-OLSR protocol is superior to the existing FT-OLSR trust model in packet delivery rate(PDR), average end-to-end delay, and packet loss rate.

关 键 词：模糊逻辑 自适应阈值 多属性准则 OLSR协议 

分 类 号：TN915.08[电子电信—通信与信息系统]