Realistic Field Tests for C-V2X Using SDR Systems

Becker Nachrichtentechnik and Fraunhofer Heinrich-Hertz-Institut (HHI) have partnered to develop C-V2X prototype systems that allow very flexible trials in a real-live environment.

By using Software Defined Radio systems (SDR) HHI provides the highest flexibility to implement the latest features from standardization in every layer of the 3GPP stack, while the RF front-end module from Becker Nachrichtentechnik will ensure high radio performance required for trials within realistic environments. 

Together the radio solution will be compact, flexible, immune to strong interferences always present in today’s crowded roads environment and offer excellent receive performance by the low-noise amplifier and selectivity provided in the front-end.

The solution will be part of the German 5G-NetMobil project and will be used to run tests for various use-cases such as high density platooning (HDPL). The implementation focus is on the device-to-device communication protocol known as PC5 in 3GPP Rel. 14. This enables direct communication without mobile infrastructure between the participants and thus ensures the operation of applications in rural and difficult radio environments.

SDRs are a wonderful technology when it comes to research and development of modern radio systems, but by themselves are unusable in the presence of noise and interference in the real world. The RF front-end modules from Becker Nachrichtentechnik are based on their long experience in radio communications and RF design and will make the SDR system suitable for worst-case environments with strong interfering signals from mobile communication base stations and all the other electromagnetic interference present in dense urban areas.

Using the solution provided by Becker Nachrichtentechnik, the Heinrich-Hertz-Institut can carry out fast and easy field tests to focus on new features in the stack and provide a ready to use solution to their customers within and beyond the 5G-Netmobil project. The front-end solution makes integration of the system in experimental vehicles easy and through the RF-properties ensure reception of signals beyond the lower bound defined in the standard. It allows customers to focus on application development and not fiddling around with bad RF conditions.

Through advanced features in the PHY layer of the implementation, HHI enables full control to simulate bad radio environments for evaluation and testing. 

First samples of the solution will be available by the end of the year.