According to World Health Organization figures, road traffic injuries are the leading cause of death among young people aged 15–29 years. More than 1.2 million people die each year worldwide as a result of traffic crashes. Vehicle-to-Everything (V2X) technologies can help bring safer roads, more efficient travel, reduced air pollution, and better driving experiences.
C-V2X technology will serve as the foundation for the safe, connected vehicle of the future, giving vehicles the ability to “talk” to each other, pedestrians, roadway infrastructure, and the cloud.
C-V2X defines two complementary communication modes that together enable a broad range of use cases. For active safety, C-V2X Direct Communications uses the harmonized, dedicated ITS spectrum for vehicles to communicate directly with each other (Vehicle-to-Vehicle or V2V), to pedestrians (Vehicle-to-Pedestrian or V2P), to roadway infrastructure (Vehicle-to-Infrastructure or V2I). For infotainment and latency-tolerant informational safety use cases (e.g., road incident one kilometer ahead), C-V2X also allows vehicles to communicate to the cloud via the mobile network (Vehicle-to-Network or V2N) on the cellular spectrum.
Due to its superior performance, cost effectiveness and 5G compatibility, momentum continues to build around C-V2X with unprecedented ecosystem support and adoption. This brief article explains why C-V2X is gaining global support for road safety applications:
Top 10 things you may not know about C-V2X:
- C-V2X will be ready for commercial deployment in cars for 2019: 3GPP finalized C-V2X Rel-14 specifications in March 2017 and 5GAA has been helping define and test the protocols and specifications of C-V2X technology by bringing together diverse players from different industries. Engineering and field operational tests for C-V2X are being undertaken around the world by a host of automaker
- C-V2X is a safer technology due to its superior radio performance: Other V2X technologies were developed a decade ago. Advances in wireless technology driven by LTE allows C-V2X to offer increased communication range (~2X), better non-line-of-sight (NLOS) performance, enhanced reliability compared to IEEE 802.11p-based radio technology, which is used by DSRC and ITS-G5. The difference between a vehicle collision and a near miss comes down to milliseconds. With approximately twice the range of DSRC, C-V2X can provide the critical seconds of reaction time needed to avoid an accident.
C-V2X is the only V2X technology with a clear evolution path to 5G and is backward/forward compatible: C-V2X Rel-14 has a strong evolution to 5G NR-based C-V2X, which will augment Rel-14 with complementary as well as new capabilities for autonomous driving, while maintaining backward compatibility
C-V2X is more cost efficient than other V2X technologies: Most new vehicles are expected to feature embedded cellular connectivity in 2021, and some automakers are set on enabling virtually all of their vehicles with cellular modems in the near future. C-V2X can be enabled using cellular modem technology expected to be available in the car, benefiting automakers with economies of scale—reducing system complexity and making C-V2X implementation extremely cost-effective.
C-V2X is a safe technology with predictable performance: 3GPP defines rigorous minimum performance specifications that ensure a predictable, uniform and guaranteed in-field experience to enable applications as critical as road safety.
C-V2X is designed to work on ITS spectrum for saving lives: Safety messages (e.g., road hazard warnings) are sent using low latency transmission direct communications in the globally harmonized 5.9 GHz ITS band without being impacted by V2N communications that are sent on the commercial cellular spectrum bands for telematics and infotainment applications.
C-V2X is designed for low-latency direct communications without relying on network assistance: C-V2X Direct Communications enables exchanging real-time safety messages for V2V, V2I, and V2P without requiring any kind of cellular subscription.
C-V2X is designed for high-speed vehicular use cases: C-V2X is designed for high-speed vehicular use cases (e.g., enhanced signal design) to support vehicular use cases up to 500km/h relative speeds in varying road conditions.
C-V2X features robust synchronization even in the absence of GNSS: C-V2X has robust mechanisms that enable cost-efficient synchronization from different sources, even in the absence of Global Navigation Satellite System (GNSS).
C-V2X is designed with a focus on security: Secure communications is very important for any V2X applications. C-V2X benefits from established security and transport layers and application protocols defined by the automotive standards communities, including International Organization for Standardization (ISO), European Telecommunications Standards Institute (ETSI), and Institute of Electrical and Electronics Engineers (IEEE 1609 Working Group).