Issue link: https://resources.mouser.com/i/1484091
9 Qorvo 2022 V2X safety messages can be made to include a Basic Safety Message (BSM) in US standards or Cooperative Awareness Messages (CAM) and a Decentralized Environmental Notification Messages (DENM) in a European Union (EU) standard. BSM contains position, velocity, and acceleration information and is transmitted up to 10 times per second. This message system also enables the vehicle receiving unit to predict collisions and warn the driver. V2X Message Protection and Security V2X and V2I communication need strong security to protect messages against fraudulent or misleading use that might lead to safety and privacy issues. Another security method is signed messages using Public Key Certificates to prevent unauthorized parties from interfering with the exchange of data and to pseudonymize the communication securely. Public key infrastructure (PKI) consists of policies and procedures to create, manage, use, save, and revoke digital security certificates. PKI allows for the transfer of electronic information securely and goes beyond just passwords as authentication with a requirement of more rigorous identity confirmation. C-V2X Performance in Crowded Highway Situations The 5G Automotive Association (5GAA) ran V2X performance and functional tests in a test report entitled V2X Functional and Performance Test Report, in which C-V2X technology was tested for a highly-congested scenario in a laboratory setting. Even in this crowded scenario, C-V2X latency remained bounded by the 100ms latency budget configured for that scenario, which is a very positive result. Conclusion The FCC effectively changed the vehicle communications Cooperative Intelligent Transport Systems (C-ITS) market in the US via the restructuring of the 5.9GHz band. The automotive industry must go forward on a narrowed spectrum with C-V2X technology instead of the widely used Dedicated Short-Range Communication (DSRC) spectrum. The changes announced pave the way for progress, eliminating the uncertainty caused by competing technologies. V2X and 5G are fast-becoming integral technologies for automakers as it endeavors to commercialize fully autonomous vehicle technology in the years ahead. Ford is now making a major connected vehicle push that will generate a substantial new revenue stream with C-V2X technology. C-V2X is now featured on six models—the Ford Mondeo, Ford F-150 Raptor, Ford Evos, Ford Mustang Mach-E, Ford Edge Plus, and Ford Explorer. Even more exciting is the effort by Ford in China as the first automaker to have C-V2X-equipped vehicles in production. These advanced-technology vehicles in China can send important information about the traffic ahead to traffic lights. This will enable manipulation of the timing of those lights to reduce congestion. V2X vehicle drivers can also receive information, including green light optimized speed advisory (GLOSA), traffic light information, red light violation warnings, and other pertinent road infrastructure details. A V2X vehicle's gauge cluster will alert drivers to maintain a certain speed range to avoid waiting at traffic lights. This will save fuel consumption and improve traffic efficiency. More exciting vehicle advances are coming, all of which will significantly change how we drive our vehicles for the better.