Cars Communicating Badly Is an Already-Solved Problem
A postdoctoral researcher at the Polytechnic University of Milan in Italy, studying V2X, digital twins, and AI enabled wireless networks, discusses how 5G-inspired V2X tech lets vehicles share sensors on the open road.
Intelligence analysis by Llama
The history of networking is full of tools that repurposed solutions to very different kinds of problems first. V2X research has long relied on models that assume “perfect” or “ideal” network conditions, which is a simplifying assumption that makes the math tractable. Open radio access networks (O-RAN) can be used for vehicle communications, allowing V2X engineers to reuse the network…
Imagine a world where cars can talk to each other and share information about the road. This is called vehicle-to-everything (V2X) technology. It's like a big network of cars that can communicate with each other and with traffic lights and other infrastructure. This can help make driving safer and more efficient. One way to make this happen is to use a technology called open radio access networks (O-RAN). O-RAN is like a big switchboard that lets cars talk to each other and to the infrastructure. It's already used in some 4G and 5G cellular networks, but it can also be used for V2X. This can help solve some of the problems that have been holding back V2X technology, like the need for new networking protocols and the challenge of dealing with real-world unpredictability.
Analysis
The History of Networking in Vehicle Communications
The history of networking is full of tools that repurposed solutions to very different kinds of problems first. Wi-Fi’s origins trace back, in part, to a team of Australian radio astronomers trying to detect signals from evaporating black holes. But the data-processing tools they’d developed also proved capable at extracting clean messages from any chaotic, echoing signal environment. Echoes are echoes, after all, whether from distant star systems or from the far corner of the house.
The Problem with V2X Research
V2X research has long relied on models that assume “perfect” or “ideal” network conditions, which is a simplifying assumption that makes the math tractable. But this assumption doesn’t reflect how real wireless signals behave in a moving, obstructed, high-density environment. That gap is exactly the kind of real-world unpredictability that open radio access networks (a.k.a. O-RAN)—an open, programmable architecture behind some 4G and 5G cellular networks—were built to manage.
O-RAN for Vehicle Communications
Solutions to the vehicle-to-everything (V2X) problem have to date relied on new networking protocols built from scratch—only to discover chicken-and-egg problems, thorny standards wars, and real signal congestion challenges at scale. By contrast, O-RAN allows V2X engineers to reuse the networking protocols already developed for cellular communications. O-RAN was developed assuming cellphone towers are generally fixed in place. But, as can be seen below, O-RAN accommodates mobile “towers”—cars and trucks, in this case—with little additional effort.
A New Way to Connect Vehicles
Self-driving vehicle technology has largely been an each-car-for-itself endeavor. Tesla’s approach, for instance, relies heavily on powerful on-board banks of computers and suites of sensors spread around the car. However, as an alternative to the “data center on wheels” model, this new O-RAN approach to V2X relies on each car’s nearby neighbors, wherever they are on the road. Each O-RAN–connected vehicle can then use a diversity of cars’ sensors to create a more accurate picture of the environment.
Key points
- V2X research has long relied on models that assume “perfect” or “ideal” network conditions, which is a simplifying assumption that makes the math tractable.
- Open radio access networks (O-RAN) can be used for vehicle communications, allowing V2X engineers to reuse the networking protocols already developed for cellular communications.
- O-RAN was developed assuming cellphone towers are generally fixed in place, but it accommodates mobile “towers”—cars and trucks, in this case—with little additional effort.
- Self-driving vehicle technology has largely been an each-car-for-itself endeavor, but the new O-RAN approach to V2X relies on each car’s nearby neighbors, wherever they are on the road.
- Each O-RAN–connected vehicle can then use a diversity of cars’ sensors to create a more accurate picture of the environment.
The use of O-RAN for V2X technology could lead to a more efficient and safer driving experience. With the ability to share information with other cars and infrastructure, drivers can make more informed decisions and reduce the risk of accidents. Additionally, the use of O-RAN could also lead to the development of new applications and services that take advantage of the V2X network.
The adoption of O-RAN for V2X technology may be hindered by the need for significant changes to the existing infrastructure and the potential for technical challenges. Additionally, the use of O-RAN may also raise concerns about data security and privacy, particularly if the network is not properly secured.
