光标签使能的车路协同现状与展望

Status and Prospects of Vehicle-Road Collaboration Enabled by Optical Tags

基于无线电的车联网部署仍然缓慢,需要低成本可渐进的解决方案,因此介绍了光标签技术及其使能的一种新型的车路协同组网方式。通过对传统路标进行改造,利用了其逆反射涂层,在保持原有功能的同时建立了可见光逆反射通信,向车辆传递动态信息。展示了一套创新的通信设计,包括延迟偏振、基于极化的差分接收和分散的数据链路协议,并给出了实验结果。最后从技术自身、单车级应用、车路协同级应用等方面介绍并展望了光标签技术未来的应用与发展。

Radio frequency-based vehicle-to-everything communication is still faced with high deployment barriers,which calls for a low-cost gradually-deployable solution.This paper introduces optical tag technology,which enables a novel vehicleroad collaborative network mode.Through renovating the traditional road signs,the corresponding retroreflective coatings are used to establish a visible backscattering communication to transmit dynamic information to vehicles while keeping their original functionality.A suite of innovative communication designs are shown including delay-polarization,polarization-based differential reception and decentralized data link protocol,and the experimental results are given.Finally,the future application and development of optical tag technologies are introduced and envisioned in terms of the technology itself,single-vehicle-level applications,and vehicle-road collaboration-level applications.