Many varieties of wireless communication technology have made this evolution of the car possible. They include GPS for satellite navigation, cellular (mobile telephone) technologies for communication and access to the internet, Wi-Fi for internet access and car-to-car (C2C) communication, DSRC (Dedicated Short-Range Communication) for automatic payment of tolls and parking fees, Bluetooth for hands-free communication, and several others.
The evolution of the car is far from ended, however, and so now RF engineers in the automotive sector are facing new development challenges which are going to change the scope, duration and complexity of the RF testing carried out on components, modules and complete vehicles.
This article highlights three big trends that automotive engineers in charge of RF testing will need to take account of in the years to come. From both a personal and a corporate point of view, it will be beneficial to address these emerging requirements early: They are:
- The increasing application of rigorous functional safety concepts to RF systems
- The requirement to test highly dynamic wireless networks in which connections and routing are changing second-by-second
- The operation of the car as a piece of mobile telephone user equipment, just like a handset and as a bridge application for e.g. eCall application..
Testing RF systems for functional safety
Today, the wireless interfaces in a car, and their applications, are important and need to function well if they are to give the car’s users a good experience. But none today is actually safety-critical: the driver has full control of the car’s motion.
This is starting to change, as car manufacturers introduce increasingly sophisticated driver-assistance systems. Eventually, it seems inevitable that fully autonomous self-driving vehicles will become a reality.
In the development of autonomous vehicles, car manufacturers will clearly implement exhaustive testing regimes. These will comprise public road testing, virtual testing, fail-safe testing, simulations, traffic scenario testing, safety and crash testing, cyber-threat testing and other