**:Desit Test and Measurement Dest Share丨What is V2X doing?Connected Vehicles for the Smart Mobility of the Future (Part I).
Welcome to pay attention to Hongke and provide you with the latest information!
V2X (Vehicle-to-Everything) is an advanced communication technology that connects vehicles, pedestrians, and road infrastructure through wireless communication to enable all-round information exchange. V2X stands for Vehicle-to-Vehicle (V2V), Vehicle-to-Infrastructure (V2I), Vehicle-to-Pedestrian (V2P), and Vehicle-to-Network (V2N), among others.
With V2X, vehicles can send real-time safety and traffic information to each other, such as the vehicle's position, speed, acceleration, steering intent, and more. This information can help the vehicle and driver better perceive their surroundings and make decisions accordingly. At the same time, V2X is also able to receive information from the road infrastructure, such as traffic light status, road conditions, construction areas, etc., providing a more comprehensive traffic picture for vehicles and drivers.
V2X uses advanced communication technologies such as wireless local area network (WLAN) based IEEE 80211 standard DSRC technology that enables vehicles, pedestrians, and road infrastructure to communicate with each other. It supports a long communication range and can cover distances of more than half a mile, enabling reliable communication between vehicles, even in complex road conditions, such as buildings, curves, or obstacles. At present, there is also C-V2X, which is based on the evolution of cellular network communication technologies such as 3G, 4G, and 5G, and C refers to cellular, which includes LTE-V2X based on LTE networks and NR-V2X systems based on 5G networks, which is a powerful supplement to DSRC technology.
Currently, V2X technology is supported by relevant international standards to ensure that vehicles and equipment from different manufacturers understand and communicate with each other. These standards specify communication protocols, data formats, and security mechanisms to ensure the accurate delivery and confidentiality of information. Through the harmonization of international standards, V2X solutions can be interoperable and interoperable on a global scale.
All in all, V2X solutions enable a full range of information exchange by connecting vehicles, pedestrians, and infrastructure, opening up new possibilities for traffic safety and traffic management. It is one of the key technologies in the future intelligent transportation system and is expected to play an important role in improving traffic safety and improving traffic mobility.
The V2X software stack provides connectivity to the automotive industry, with vehicles generating V2X messages through the V2X software stack. The V2X software stack can be pre-sales integrated and run on devices such as domain controllersAftermarket installation is also possible, running on a dedicated V2X OBU (on-board unit).
V2X technology enables high-frequency communication, with vehicles typically sending ten messages per second. These messages contain a variety of important parameters, such as the vehicle's exact geolocation, real-time speed, acceleration and direction, as well as the status of brakes and hazard lights. This information can be very useful for both other vehicles and pedestrians, helping them better understand the traffic environment around them.
Vehicles that receive V2X messages run applications based on this information in order to display alerts of potential hazards. It is important to note that while all V2X capable vehicles can read V2X messages, only messages related to the current vehicle will be used. For example, vehicles driving on highways often do not use messages from the oncoming lane because these messages are not critical to the safety of the vehicle at hand unless they present a potentially hazardous situation. For example, if a message is received that a vehicle is about to deviate from the road and is likely to cross the driver's current road, the vehicle will be alerted accordingly. Such an alert can alert the driver to take appropriate action to avoid a potential collision.
Example of Dexter V2X application and warning interface.
Depending on the level of complexity, a V2X application can be divided into different phases.
Phase 1 — Day 1 application.
This phase includes basic perception solutions.
The solution provided by the Phase 1 application is already technically feasible and can be implemented directly. These apps are designed to provide alerts and information about traffic conditions to enhance drivers' safety awareness. For example, you can provide alerts for traffic jams, giving drivers the option to avoid congested road sectionsAlerts can also be provided about accidents, obstacles on the road, construction areas, and severe weather. This information can help drivers make more informed decisions and take appropriate action in advance.
Phase 2 — Day 2 application.
This stage is for some of the more advanced applications that are still under development or have not yet been finalized.
The second phase of the application involves more complex functions and scenarios, such as platooning. Fleet marshalling refers to a fleet of high-speed trucks that coordinate autonomous driving and co-driving for more efficient transportation. In fleet formation, vehicles communicate and coordinate with each other via V2X technology to maintain proper distance and speed, reducing air resistance and improving fuel efficiency. This technology can improve the efficiency of transportation on highways and reduce the reliance on human drivers. In addition to fleet marshalling, there are a number of other Day 2 apps in development that are designed to enable more advanced driver assistance features and traffic optimization through V2X technology, such as intersection coordination, automated parking, intelligent route planning, and optimized traffic light control, among others, are all possible Day 2 apps.
Overall, V2X applications are divided into different phases based on their complexity and capabilities, with the Day 1 app providing basic perception and alerting functions, while the Day 2 app involves more advanced features and scenarios such as fleet marshalling and advanced driver assistance features. Through continuous technological development and innovation, we can expect more advanced V2X applications to emerge to bring greater safety, efficiency, and convenience to road traffic.
Desit's all-round V2X ITS communication solution not only provides software solutions from V2X software protocol stack and applications, but also provides end-to-end V2X communication solutions for the whole process of hardware OBU and RSU, which are widely used in various intelligent transportation system (ITS) fields such as assisted driving and autonomous driving, smart road edge computing, and smart city construction management.