高速移动环境下的车联网应用对时延和可靠性提出求了很高要求（如低至1ms的空口时延和99.999%的业务可靠性），而现有技术（如802.11P和LTE V2X）受限于其固有设计要求（如网络架构、接入方式和帧结构等），均难以完全支撑增强型车联网(eV2X)应用，如车辆编队行驶、车辆远程自动驾驶等。因此，如何针对eV2X业务特征，设计低时延高可靠的接入、传输和组网技术，解决相关基础理论问题，形成具有自主知识产权的车联网通信体系标准，具有重要的应用价值和科学意义。本项目将面向5G应用，针对高移动环境车联网增强型eV2X应用需求，以降低时延和提高可靠性为目的，基于5G无线通信理论与技术，重点研究如下关键问题：（1）高速移动环境下低时延高可靠通信理论与性能；（2）车联网低时延高可靠多址接入与协议研究；（3）高动态低时延高可靠车联网组网技术与协同机制；（4）低时延高可靠车联网验证平台与关键技术测试。

The internet of vehicles applications under high mobility environments have very strict requirements on the latency (as low as 1ms) and reliability (as high as 99.999%). Thus, due to the inherent limitations in network architecture, access techniques, frame structure, etc, it is extremely difficult for the existing technologies (i.e. 802.11P or LTE V2X) to provide the enhanced V2X applications, such as platooning and long distance auto-driving. Therefore, it is of practical and theoretical significance to design the low-latency and ultra-reliable media access, transmission and networking technologies according to the characteristics of eV2X services, which will help solving the related fundamental problems in vehicular networks, thus resulting vehicular communication standards with our own intellectual property rights. Based on the theories and technologies of 5G wireless communications, we aim at reducing the latency and improving the reliability of vehicular networks in high mobility environments. This project focuses on the following key issues: (1) low-latency and ultra-reliable communication theories and performance evaluation for high mobility environments; (2) low-latency and ultra-reliable multiple access and protocols for vehicular networks; (3) highly-dynamic, low-latency and ultra-reliable vehicular networking technologies and coordination mechanisms; (4) low-latency and ultra-reliable vehicular network verification platform and key technology testing.