The solutions include two system-on-chips (SoCs) to help in the development process for vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) communication systems. One of the solutions includes the R-Car W1R 760 megahertz (MHz) band wireless SoC for the Japanese market, and the new R-Car W2H SoC that features a high-performance security engine that is needed for V2X systems designed for the Japanese, U.S., and European markets.
Another solution consists of the W2H SoC combined with the R-Car W2R 5.9 GHz band wireless communication SoC developed for U.S. and European markets.
According to Renesas by combining these new SoCs, system developers will now more easily be able to develop systems that support the corresponding V2X standard for the Japanese, U.S., and European markets. Combined with starter kits from Renesas system developers will be able to immediately start application software development, reducing the development period for V2X systems.
Last year Renesas launched the R-Car W1R, which conforms to Japan's wireless communications standards, and is adopted in the ITS Connect (Note 1) V2V and V2I communications system. It is the only proven device in the world and is currently commercially deployed in the V2X wireless SoC market. The R-Car W1R was adopted in Denso Corporation's in-vehicle ITS units are is also used in Toyota's Crown, Prius, and Lexus RX models for displaying traffic signal violation, cross traffic, and pedestrian warnings at traffic signals using car and infrastructure communications to warn drivers about approaching emergency vehicles and to assist cruise control and other functions.
Differing communication frequencies, communication standards, and security standards across different regions means that optimising devices and the associated software development are significant challenges for V2X system development.
In response Renesas’ V2X kit solutions look to combine either the R-Car W1R or R-Car W2R with the R-Car W2H. These kit solutions make it possible to construct optimal systems for each region at low cost and conform to Japanese, U.S., and European standards to support user system development.
Systems that conform to the ARIB STD-T109 Japanese wireless communications standard as well as the ITS Connect security and communications standards can be implemented by combining the R-Car W1R, which is designed for the Japanese market, with the R-Car W2H. Similarly, systems that conform to the North American standards (IEEE 801.11p, IEEE 1609.x, and others) or the European ETSI standards, can be implemented by combining the R-Car W2R, which is designed for the European and U.S. markets, with the R-Car W2H.