Who is the true mainstream technology for car networking applications between LTE-V2X and DSRC?

2024-03-01

After several years of development, the embryonic form of the domestic car networking industry chain has gradually emerged, and players on the chain have started to research and develop new products and strengthen technological reserves. What is the current trend of the Internet of Vehicles industry and how will the future industrial technology roadmap evolve?

From a scope perspective, in the field of autonomous driving vehicle networking, there are currently two different technological routes: LTE-V2X (4G LTE communication) and DSRC (WiFi based short range communication for vehicles). In fact, from a standard perspective, both LTE-V2X and DSRC for the Internet of Vehicles are standards. DSRC is mainly developed and applied by European and American companies, while LTE-V2X is mainly developed and applied by Chinese companies. LTE-V2X technology emerged later than DSRC, with the advantage of being a latecomer to new technologies and improved performance compared to DSRC.

In recent decades, the number of urban vehicles has skyrocketed, and the accompanying traffic safety issues have become a common concern among major automotive industries. In order to avoid losses caused by traffic accidents, V2X vehicle networking technology is gradually entering the public's field of vision.

V2X currently includes two major standard stages: LTE-V2X and 5GNR-V2X. In June 2017, LTE-V2X based on LTE was first standardized in the R14 version of 3GPP, which is also V2X communication technology based on mobile cellular networks. Compared to V2X based on IEEE802.11p, cellular communication technology can provide superior performance and future wireless access.

Let's take a look at DSRC technology again. DSRC transmission can achieve communication between vehicles and infrastructure, broadcasting up to 10 accurate vehicle information per second, including position, speed, and acceleration. Based on the mature technology of WIFI, DSRC technology has been widely used in areas such as access control, fleet management, non-stop toll collection, etc. The well-known ETC system is based on this technology.

Everything has two sides, and the impact of various technological applications is no exception. At present, there is a lot of discussion on LTE-V2X and DSRC in the market, and there is no consensus on which type of technology is the mainstream technology. In fact, whether it is LTE-V2X or DSRC, which type of technology can adapt to actual needs and drive industry development forward, is more likely to gain long-term vitality and vitality.

Analysts have pointed out that within the next 5-10 years, the promotion of the Internet of Vehicles industry will form a market size of 10 trillion yuan for intelligent vehicles, 2 trillion yuan for intelligent road systems, and 2 trillion yuan for V2X (Connected Vehicles) on the basis of the existing 350 million motor vehicles, 288 districts and cities, 150000 kilometers of highways, and one million kilometers of urban roads. Such a vast development space has given many investors strong confidence in the future development of the Internet of Vehicles industry.

For the rapidly developing Internet of Vehicles, the technology of vehicle road collaboration and the infrastructure of the Internet of Vehicles are both very important, and building a data platform for TE-V2X is indispensable. The data platform can aggregate multi-source data, conduct in-depth analysis and mining of various application data such as V2I/V2V/V2P, extract key information, make decisions, and timely push decision instructions to the vehicle mounted and roadside units, providing necessary support for the efficient operation of the C-V2X system.

After entering the "big screen era" of automotive central control, traditional car companies and emerging technology companies have launched a large number of in car application apps, effectively improving the driving experience of cars. These intelligent human-vehicle interaction systems are part of the "vehicle to person (V2P) communication" of the vehicle networking. However, from the definition of vehicles equipped with V2X function by the China Association of Automobile Manufacturers, the "X" in V2X is far more than just "vehicle person communication". Vehicle road (V2R), vehicle vehicle (V2V), and vehicle network (V2N) communication technologies are depicting broader application prospects for "5G+vehicle networking".

In the future, in order to accelerate the commercial deployment and application of technologies such as TE-V2X and 5GNR-V2X, it is still necessary to strengthen collaboration among industries such as automobiles, transportation, and information technology, as well as strengthen contacts between governments, research institutions, and automobile manufacturers to jointly solve numerous technical problems such as large-scale testing and verification, safety certification, as well as industrialization promotion issues such as vehicle and transportation infrastructure deployment, data platform construction, and industry standard establishment. And in a subtle way, cars have gradually transformed from a means of transportation from point A to point B, into a new generation of intelligent terminals that can explore various aspects of life.

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