The 5G Automotive Association has conducted tests to compare the performance of 802.11p/DSRC (known in Europe as ITS-G5) and Cellular V2X PC5 radio technologies in delivering V2V (Vehicle-To-Vehicle) safety messages.

The test results show that Cellular Vehicle-to-everything (C-V2X) direct communications technology outperforms 802.11p/DSRC. With a natural evolution path towards the low latency and high bandwidth benefits of 5G NR, C-V2X also demonstrated superior performance in several dimensions, including the following:

  • Enhanced reliability over extended communications range
  • Better non-line-of-sight performance
  • Greater resiliency to interference (e.g. arising from other devices)

These performance advantages are particularly important in the most difficult environments such as non-line-of-sight scenarios (e.g., around a corner, highway queue forming etc.), where resident onboard sensors and radars have certain limitations.

The design and execution of each experiment were set up to ensure that environmental conditions, radio frequency parameters, system integration details and physical structures were consistent when comparing 802.11p/DSRC and C-V2X direct communications.