基于地理位置的流量感知辅助路由协议  

Geographical routing protocol assisted by traffic awareness

作　　者：刘建航[1] 翁好男 李世宝[1] 王杰冰 LIU Jian-hang;WENG Hao-nan;LI Shi-bao;WANG Jie-bing(College of Oceanography and Space Informatics,China University of Petroleum(East China),Qingdao 266580,China)

机构地区：[1]中国石油大学(华东)海洋与空间信息学院,山东青岛266580

出　　处：《计算机工程与设计》2023年第6期1789-1795,共7页Computer Engineering and Design

基　　金：国家自然科学基金项目(61972417);山东省自然科学基金项目(ZR2020MF005)。

摘　　要：为解决车载自组织网络(VANETs)中拓扑空洞、链路冗余、链路稳定性差、路由表维护成本高等问题,提出一种基于地理位置的流量感知辅助路由协议(TAR)。通过对车辆信息流量及链路稳定性的评估进行分析和建模,获取链路收益和有效信息流量。利用多属性效用理论(MAUT),使用加权链路收益和有效信息流量计算车辆效用值并作为路由选择的依据。根据节点相对位置信息,动态切换数据转发模式,提高链路稳定性。实验结果表明,与GPSR和MM-GPSR协议相比,TAR能够有效减少路由冗余,分组交付率提高15%,延迟降低40%。To solve the problems of topology holes,link redundancy,poor link stability and high maintenance cost of routing tables in vehicular ad hoc networks(VANETs),a geographical routing protocol assisted by traffic awareness(TAR)was proposed.Link revenue and effective information flow were obtained by analyzing and modeling the assessment of vehicle information flow and link stability.Using the multi-attribute utility theory(MAUT),the weighted link revenue and the effective information flow were used to calculate the vehicle utility value and served as the basis for routing.According to the relative position information of the node,the data forwarding mode was dynamically switched to improve the link stability.Experimental results show that,compared with GPSR and MM-GPSR protocols,TAR can effectively reduce routing redundancy,improve packet delivery rate by 15%and reduce delay by 40%.

关 键 词：智能交通 车载自组织网络 地理位置路由 路由协议 流量感知 多属性效用理论 链路收益 

分 类 号：TN915.9[电子电信—通信与信息系统]