基于车间作用关系的安全预警信息传输控制策略研究

Along with promoting and development of LTE-V2V, transmission requirement of Safety Warning Message (SWM) has been brought out. There are two key problems that will directly affect the quality of SWM transmission performance, namely the large amount of local safety information and lack of transmission mechanism. The fundamental reason for both problems should be lack of fully understanding of interactive vehicle relationship, which is the basis of information source control and transmission control. Therefore, it should be taken seriously and studied from these two aspects..For information source control, a clustering algorithm based on vehicle health characteristics will be studied to determine the SWM interaction area according to stability priority principle, which can efficiently avoid the stability problem caused by the frequent transfer of cluster head. Secondly, the essence of interactive vehicle relationship will be studied based on vehicle health and relative position. Interactive vehicle relationship function will be generated according Ising model and communication correlation matrix will be built based on it to determine the transmission priority of SWM . For transmission control, the communication demand relationship will be introduced into the design of SWM transmission control strategy. Based on communication correlation matrix, a complete strategy including channel allocation, transmission nodes selection and SWM transmission procedure will be developed to improve SWM transmission performance..The results of this project will enrich the transmission mechanism, and provide a theoretical support and guidance for practical process of Internet of Vehicles.

LTE-V2V的推进带来了车辆安全预警信息SWM的传输需求。影响SWM分发表现的两大主因是局部待传信息量过大和传输机制欠缺，其根源在于对车间作用关系内涵解读不足。车间作用关系是实现信源控制和传输控制的依据，可从这两方面入手，研究其对SWM传输表现的改善。.信源控制方面，项目拟基于车辆健康状态，采用簇头稳定优先原则构建分簇模型，避免因簇头频繁转化而带来的簇稳定性问题，并确定SWM信息交互区域；其次从车辆健康状况与车间相对位置关系揭示车间作用关系本质，借助Ising模型构造车间作用关系函数，并以之为基础构建通信关联矩阵，确定信息交互优先级。传输控制方面，项目将通信需求关系引入SWM传输控制策略制定，以通信关联矩阵为依据，形成一套包括信道分配、节点选择和传输控制流程的完整SWM传输控制策略，以期全面提升SWM传输表现。.项目成果将丰富车间信息交互机制，为车联网的实用化提供科学依据和理论基础。

V2V安全信息交互逐渐成为通信领域的研究热点之一。本项目以车辆安全信息传输性能表现改善为目标，通过有针对性的分析车间通信需求关系，揭示制约车间安全信息传输性能的关键问题。基于车辆健康状态，采用簇头稳定优先原则构建分簇模型，避免因簇头频繁转化而带来的簇稳定性问题，并确定SWM信息交互区域；其次从车辆健康状况与车间相对位置关系揭示车间作用关系本质，借助Ising模型构造车间作用关系函数，并以之为基础构建通信关联矩阵，确定信息交互优先级。项目将通信需求关系引入SWM传输控制策略制定，以通信关联矩阵为依据，设计了SWM传输控制策略。通过anylogic仿真及NS-3实现实验测试，本方案传输成功率高，对提升道路安全具有积极作用，为LTE-V2V的车间安全信息交互方法提供理论基础及实验依据，推进该技术的实用化进程。本项目研究期间，共计发表期刊论文6篇，其中SCI论文3篇，会议论文6篇，申请国家发明专利6项，获专利授权3项，培养研究生共计21名。