Enabling

Quantum mechanics

Engineering

Transport engineering

Aerospace engineering

Vehicular communication systems

Beacon

Automotive industry

Standardization

Computer security

Operating system

Wireless ad hoc network

Telecommunications

Power (physics)

Computer science

Computer network

Physics

Psychology

Low latency (capital markets)

Psychotherapist

Reliability (semiconductor)

Physical layer

Dedicated short-range communications

Vehicular ad hoc network

Wireless

Intelligent transportation system

Software deployment

Key (lock)

IEEE Communications Standards Magazine

Intelligent transportation systems (ITS) are fast moving from connected vehicles on the road to autonomous driving. Vehicular communication is a key enabler for the deployment of advanced ITS applications such as platooning and remote vehicle control. DSRC and C-V2X are two key wireless technologies that will play a vital role in the implementation and deployment of an autonomous transport system. We review the current standardization efforts for both of these technologies with a focus on MAC and PHY layers. The automotive industry and research community have been working on new standards -- IEEE 802.11bd (for DSRC) and 5G NR V2X (for C-V2X) -- to meet the high reliability and low latency requirements of autonomous driving. We also highlight the major changes that have been made to previous standards such as IEEE 802.11p and C-V2X. Finally, we present open challenges that need to be addressed to further improve these standards for vehicular communications.

Vehicular Communications for ITS: Standardization and Challenges