Car-to-X Communication Platform Technology Helps Cars Drive Safely
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The automobile intelligent warning system is an important part that relates to the safe driving of the car. The traditional warning system uses long-distance communication to cover the entire area to obtain the vehicle status information, but it is difficult to obtain real-time information about hundreds of meters of the car in the vicinity. This kind of function has already been insufficient for dealing with the increasingly intensive and complex urban road traffic conditions in the transportation network. 
The car-to-x (Car-to-Multi-Application; C2X) communication platform technology can solve the above problems well. The Car-to-X platform technology is a system that combines the NXP software radio technology and the Cohda wireless advanced IEEE 802.11p radio technology. This platform realizes the full interconnection of automobiles, which is an important milestone for large-scale implementation of safer road traffic.
C2X communications uses the wireless standard IEEE802.11p designed for automotive applications. This allows the cars to communicate with each other (car-to-car) while the car can also communicate with the surrounding intelligent transportation infrastructure (car-to-infrastructure). The car-to-x platform jointly developed by NXP and Cohda can truly "see" every corner, thus detecting traffic jams or risks before the naked eye notices. 
Car-to-X platform technology can reliably receive signals from fast-moving objects in harsh environments. Car-to-X's communication technology can not only realize the vehicle-to-vehicle communication, but also realize the vehicle and object. Communication between, "For example, when the traveling car enters a signal range of a construction site somewhere, it will receive a signal from the launcher on the site. After the car receives the car, it will automatically prompt the driver to adjust the route according to the direction of travel." Drue Freeman explained. The advantage of this is that you don't need to receive a lot of traffic information that is not related to your route, and after receiving the signal, the car will automatically give you an adjusted route hint.
At the same time, the Car-to-X platform technology can also give tips on the hyper-visual range. For example, if there is a big truck in front of the car, it will completely block your view, and if the car in front of the truck suddenly brakes Measures will cause great hidden dangers. At this time, Car-to-X communication technology can also give warnings, which can prevent the occurrence of tragedy. When passing through an intersection, this technology can also be used to judge cars that are in line of sight blocking dangerous behavior, such as cars passing quickly in a vertical direction and giving an alarm.
It is reported that the platform has been tested in the field on the road in Europe. "More than one hundred vehicle-scale field tests will be conducted next year to test information processing in complex road conditions. In Europe, this platform is expected to become the standard for automobiles. In the future, it will also It may be extended to the world." In 2014, this technology will be put into practical use. 
Why not consider 3G or cellular communication technology? "Tested, 3G technology has a lower response speed than 802.11p, so it is not suitable for such instant messaging applications." The head of the technology said, "NXP is cooperating with Cohda Wireless in Australia to apply this technology to the car. "In fact, this technology has made a number of improvements specifically for automotive applications, such as more advanced hotspot switching, better support for mobile environments, enhanced security, and enhanced authentication." The benefits of this technology are expected to reduce deployment costs, increase bandwidth, and collect traffic information in real time.
Extensive reading:
IEEE 802.11p (also known as WAVE, Wireless Access in the Vehicular Environment) is a communication protocol extended by the IEEE 802.11 standard and is mainly used for automotive electronic wireless communications. IEEE 802.11p is an extension of traditional wireless short-distance network technologies that can be very useful for cars, including: more advanced handoff schemes, mobile operations, enhanced security, identification, peer-to-peer networking (peer-to-peer) certification. The most important thing is to communicate on the vehicle's specified frequency. Will serve as the basis for DSRC (Dedicated Short Range Communication) or for in-vehicle communication. Car communication can be carried out between cars, or between cars and roadside infrastructure networks.