Cellular Vehicle-to-Everything technology (C-V2X) is one of the important technical means to fulfill the Internet of Vehicles (IoV) services. Several standards organizations around the world have carried out research on C-V2X key technologies, network architectures and service application scenarios. The development of the IoV has put forward more requirements for 5G broadband mobile networks in terms of high bandwidth, low latency, high concurrency, low power consumption, and heterogeneous network compatibility. This paper attempts to study the IoV architecture and key terminal units such as on-board unit (OBU) design and road side unit (RSU) based on 5G and C-V2X technology. It first introduces the development of IoV technology and standards, and analyzes the existing IoV architecture design. The vehicle OBU design and RSU service design were finally proposed and described in detail.

蜂窝车联网技术（C-V2X）是实现车联网（IoV）服务的重要技术手段之一。全球多个标准组织开展了C-V2X关键技术、网络架构和业务应用场景的研究。车联网的发展对5G宽带移动网络在高带宽、低时延、高并发、低功耗、异构网络兼容性等方面提出了更多要求。本文尝试研究基于5G和C-V2X技术的车联网架构和关键终端单元，如车载单元（OBU）设计和路侧单元（RSU）。首先介绍了车联网技术和标准的发展，并对现有的车联网架构设计进行了分析。