基于C-V2X的车路群体协同混合组网

Hybrid Networking for Vehicle-infrastructure Intelligent Cooperation Based on C-V2X

车联网是支持未来自动驾驶和智能交通的重要基础设施,也是5G交通新基建的重点建设方向。针对大规模车路协同智能驾驶业务场景,建立并分析了通信流量模型,测算了不同发展阶段车路群体协同带宽需求,分析了当前C-V2X独立组网和叠加组网等不同组网模式在支持车路群体协同过程中面临的困境。针对车路群体协同服务带来的通信高带宽、用户规模大和资源调度复杂挑战,提出了网络协调下的混合组网模式,为基于5G C-V2X的车联网支撑大规模车路群体协同服务提供了可行方案。

Internet of vehicles is the basic infrastructure for enabling autonomous driving and intelligent transportation system, and it is also the key developing direction of New Infrastructure Construction in China.Focused on large-scale vehicle-infrastructure cooperation for intelligent driving scenarios, a communication traffic model is proposed and analyzed, which is further used to calculate the communication bandwidth requirements for different developing stages of cooperative vehicle-infrastructure systems(CVIS).Then, the challenges of supporting collective vehicle-infrastructure cooperation using different networking modes of Cellular based Vehicle-to-Everything(C-V2X),i.e.,independent(only Uu interface) and superposed(Uu and PC5 interface) networking, are analyzed.To address the challenges of high bandwidth, large-scale users, and resource scheduling complexity caused by collective vehicle-infrastructure intelligent cooperation services, a hybrid networking architecture that is scheduled by the context based on C-V2X is proposed, which provides a feasible solution for large-scale CVIS based on 5 G C-V2X.