【摘要】 车联网作为产业变革创新的重要催化剂,正推动着汽车产业形态、交通出行模式、能源消费结构和社会运行方式的深刻变化。智能交通和自动驾驶对车联网的通信速率、时延和可靠性等系统性能提出更加严苛的要求。蜂窝车联网(C-V2X,Cellular Vehicle-to Everything)提供低时延、高可靠的V2X通信能力,已成为国际主流的车联网通信标准。随着移动通信从4G向5G演进,C-V2X标准正在从LTE(Long Term Evolution)-V2X到NR(New Radio)-V2X演进,并在全球竞争中已形成超越态势。基于作者所承担的国家自然科学基金重点项目相关研究工作及成果,本文介绍了C-V2X的研究进展,分析其相对于IEEE 802.11p的技术优势,并从基础理论、关键技术和应用前景等方面展望了C-V2X的发展方向。更多还原

【Abstract】 As an important catalyst for industrial reform and innovation,V2X(Vehicle-to-Everything)communication was promoting profound changes in automobile industry,transportation mode,energy consumption structure and social operation mode.The intelligent transportation and autonomous driving put forward more stringent performance requirements in data rate,latency,reliability and other system performance of the V2X communication.C-V2X(Cellular Vehicle-to Everything)provides low latency and high reliability V2X communications,and has become a major international V2X communication standards.With the evolution from 4G to 5G system,C-V2X is evolving from LTE(Long Term Evolution)-V2X to NR(New Radio)-V2X,and has presented obvious surpassing trend in global competition.Based on our research work and results supported by National Science Foundation Projects,this article introduced the research progress of C-V2X.The technical advantages of C-V2X compared with IEEE 802.11p were analyzed. Meanwhile,the fundamental theory and technical challenges with the trend of C-V2X applications were envisioned.更多还原