Software deployment

Psychology

Vehicular communication systems

Reliability (semiconductor)

Engineering

Power (physics)

Transport engineering

Telecommunications

Physics

Vehicular ad hoc network

Psychotherapist

Aerospace engineering

Intelligent transportation system

Wireless

Quantum mechanics

Operating system

Computer science

Low latency (capital markets)

Wireless ad hoc network

Beacon

Physical layer

Enabling

Automotive industry

Dedicated short-range communications

Key (lock)

Computer network

Standardization

Computer security

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