基于信用度机制的移动延迟容忍传感网中继传输优化算法  

The Relay Transmission Optimization Algorithm for Mobile Delay Tolerant Sensor Networks Based on Credit Mechanism

作　　者：王金翔 王恒[1] 谢娅娅[1] WANG Jinxiang;WANG Heng;XIE Yaya(School of Electronic and Information Engineering,Jingchu University of Technology,Jingmen Hubei 448000,China)

机构地区：[1]荆楚理工学院电子信息工程学院,湖北荆门448000

出　　处：《传感技术学报》2023年第8期1281-1289,共9页Chinese Journal of Sensors and Actuators

基　　金：湖北省教育厅科研项目(B2022245);荆门市科学技术局一般科技计划项目(2023YFYB089)。

摘　　要：为改善移动延迟容忍传感网(MD⁃TSN)的网络传输能力,提出了基于信用度机制的移动延迟容忍传感网传输优化算法。引入副本机制,设计了鉴权信息结构,将源节点与目的节点之间的链路连通程度及身份信息进行量化解析,以提升网络对中继链路的评估能力。采用双线性映射来构建注册鉴权密钥,以此设计了基于身份鉴权机制的中继节点可信度确认机制,通过结合哈希映射对中继节点进行身份鉴权,以降低中继节点的离线率,有效提高所选链路及中继节点的稳定性能。随后,基于信用分级评估模式,采取一级信用值、次级信用值筛选服务能力较强的中继节点作为备选节点,构建了基于信用度机制的节点激励方法,激励具有较强服务能力的节点,惩罚存在拒绝服务行为的中继节点,以进一步优化源节点与目的节点间链路,增强中继节点对源节点的服务覆盖能力。仿真实验表明,与当前常用的基于能量多跳路由机制的传感网传输算法和基于模糊-猫群优化机制的无线传感网多径传输算法相比,所提算法具有更高的网络传输带宽,以及更低的路径抖动频次和中继节点离线率。In order to improve the transmission capability of mobile delay tolerant sensor network(MD⁃TSN),a transmission optimization algorithm based on credit mechanism is proposed.The replica mechanism is introduced,and the authentication information structure is de⁃signed to quantitatively analyze the link connectivity and identity information between the source node and the destination node,so as to improve the evaluation ability of the network on the relay link.The bilinear mapping is used to construct the registration authentication key,and the identity based authentication mechanism is designed to verify the reliability of the relay node.Combined with the hash map⁃ping algorithm,the reliability of the relay node is verified to improve the stability of the selected link and relay node,identity authentica⁃tion is used to reduce the offline rate of relay node;based on the credit rating evaluation mode,the relay node with strong service ability is selected as the candidate node according to the first level credit value and secondary credit value,and the node incentive method based on the credit mechanism is constructed to motivate the node with strong service ability and punish the relay node with service rejection activi⁃ty to further optimize the link between the source node and the destination node and enhance the service coverage of the relay node to the source node.Simulation results show that the proposed algorithm has higher network transmission bandwidth,lower path jitter frequency and relay node off⁃line rate compared with the commonly used sensor network transmission algorithm based on energy multi hop routing mechanism and wireless sensor network multi⁃path transmission algorithm based on fuzzy cat swarm optimization mechanism.

关 键 词：移动延迟容忍传感网 鉴权信息结构 双线性映射 信用分级评估 服务覆盖 

分 类 号：TP393.04[自动化与计算机技术—计算机应用技术]