车路协同是道路交通系统发展的重要组成部分，而可扩展的信息传输则是海量车联网应用服务的基础前提。然而，受限于可用资源、协同效率以及设施建设等约束，车路协同的信息传输性能，特别是在高负载环境下的可扩展性尚未能得到保障。基于此，本项目聚焦信息传输中协同程度、服务覆盖以及资源利用效率不足等瓶颈问题，针对车路协同系统信息传输的车辆协同机制、服务覆盖策略以及资源优化管理方法展开研究。主要内容包括：1）研究基于车辆运动时空特性的分布式协同传输策略，提升车辆协同传输信息效率；2）建立动静态路侧单元融合的设施辅助传输机制，实现全域全时段服务覆盖；3）设计面向多源异构并发信息传输的资源优化管理策略，保障高负载环境下传输服务的可扩展性；4）搭建面向车路协同信息传输的半实物仿真实验平台，验证理论结果的准确性与有效性。本项目以建立面向车路协同的信息传输可扩展性优化机制为目标，为系统在更大范围内的应用提供技术支撑。

Vehicle-infrastructure cooperation is an important part of the development of road traffic systems, and scalable information dissemination is the basic premise of massive Internet of Vehicles application services. However, due to constraints such as available resources, cooperation efficiency, and facility construction, the information dissemination performance of vehicle-infrastructure cooperation, especially the scalability under high-load environments, has not yet been guaranteed. Based on this, this project focuses on the bottleneck problems of the insufficient cooperation, service coverage, and resource utilization efficiency in information dissemination, and conducts research on the vehicle cooperation mechanism, dynamic service coverage strategy, and optimized resource management of information dissemination in the vehicle-infrastructure cooperation system. The main contents include: 1) study distributed cooperative transmission strategy based on the spatio-temporal characteristics of vehicle motion to improve the efficiency of vehicle cooperative dissemination of information; 2) establish a facility-assisted dissemination mechanism for the integration of dynamic and static roadside units to achieve a global and full-time period of the service coverage; 3) design optimized resource management strategy for multi-source heterogeneous concurrent information dissemination to ensure the scalability of transmission service under high-load environment; 4) build a semi-physical simulation experiment platform for vehicle-infrastructure cooperative information dissemination to verify the accuracy and validity of the results. This project aims to establish an optimized information dissemination scalability mechanism for vehicle-infrastructure cooperation system, and provides technical support for the application of the system in a wider range.