  In recent decades, both the industry and the academy society are sparing no
efforts to develop and standardize the Cellular-Vehicle-to-Everything (C-V2X)
communication which is one of the prominent emerging services of the next
generation of wireless network (5G). C-V2X communication is used for
information exchange among the traffic participants with network-assisted which
can reduce traffic accidents and improve traffic efficiency. And it is also the
primary enabler for cooperative driving. But C-V2X communication has to meet
different Quality of Service (QoS) requirements (e.g., ultra-high reliability
(99.999%) and ultra-low latency).
