V2X Network Architecture and Standards System

Firstly, this chapter presents the network architecture of V2X from the perspectives of V2X communications and applications, CVIS and ITS. Then the technical challenges faced by V2X communications are analyzed, and V2X protocol reference model is elaborated. The key technologies and the standardization progress of the two technical V2X standard systems are reviewed: IEEE 802.11p and C-V2X. They are compared from the following three aspects: the key technologies, simulation performance and field tests on the public road. Especially, the results from both simulation and field test on the public road can prove C-V2X outperforming IEEE 802.11p. Finally, the latest progress of IEEE 802.11p and C-V2X spectrum allocation is introduced, and the reasons for selecting C-V2X as the technology and standards route are summarized.