Renesas Electronics designs automotive wireless communication for Vehicle-to-Infrastructure communication

Renesas Electronics, a premier supplier of advanced semiconductor solutions, today announced the R-Car W2R system-on-a-chip (SoC), the first member of the new Renesas R-Car Family of devices developed specifically for V2X applications. The new automotive wireless communication SoC is designed for Vehicle-to-Vehicle (V2V) and Vehicle-to-Infrastructure (V2I) communication in the 5.9-gigahertz (GHz) band.

The R-Car W2R delivers top-class performance when using Renesas’s exclusive radio frequency (RF) system design technology. It is the first device of this type capable of reducing out-of-band transmit emissions to less than 65 decibel-milliwatts (dBm) , achieving the requirements of the European standards organisation European Telecommunications Standards Institute (ETSI). Transmitting high-quality signals with very little interference makes it possible to incorporate V2X into various types of Advanced Driving Assistance System (ADAS) applications, such as forward collision warning and lane keep assistance. The R-Car W2R also conforms to the Institute of Electrical and Electronics Engineers (IEEE) 802.11p communication standard for Intelligent Transport Systems (ITS) used in Europe and North America.

Previous safe driving assistance systems relied on technologies such as camera images, infrared signals, and milli-wave radar. However, there are tradeoffs with these, such as the inability to track traffic conditions over wide areas and difficulty obtaining information on vehicles approaching intersections where visibility is poor. V2X aims to reduce vehicular accidents and traffic congestion by enabling direct, bi-directional communication between vehicles (V2V) and between vehicles and signal devices or road signs (V2I), without the need to route data through the cloud. V2X communication standards are being adopted in various countries and a number of companies including Renesas are accelerating development work in this area with the expectation that V2X will become an important technology for drivers in the years ahead.

Europe and North America have already adopted the IEEE 802.11p 5.9 GHz band wireless communication standard, which enables vehicles to obtain information on approaching vehicles outside line of sight and over a wide area. The R-Car W2R complies with this standard and enables the reliable collection of information on vehicles and infrastructures over a wide area to enable high-quality signal transmission. When combined with existing products based on the R-Car platform, it enables bi-directional V2V and V2I communication of information that cannot be picked up using camera images or radio waves. This allows Advanced Driver Assistance Systems (ADAS) development for enhanced safety and comfort, making it possible to alert the driver with accurate, real-time information.

Key features of the R-Car W2R system on chip (SoC):

 1) Exclusive RF system design technology that reduces out-of-band transmit emission to less than 65 dBm level for the first time ever

The R-Car W2R is based on exclusive RF system design technology that reduces noise generation by the chip itself and combines with a filter to block external noise, resulting in the suppression of out-of-band noise to less than the 65 dBm level for the first time ever in a device of this type. This satisfies the demanding requirements set by the ETSI and delivers leading level of low out-of-band noise. This also makes it possible to track traffic conditions over wide areas and to obtain accurate information on vehicles approaching intersections where visibility is poor. Thus, 5.9 GHz band wireless communication can now be incorporated into driver assistance systems requiring the highest level of safety.

2) IEEE 802.11p compliance and single-chip integration of communication functions from RF to the physical layer and the data link layer

The R-Car W2R integrates the V2X communication functionality for linking RF to both the physical and the data link layers in a 10 mm x 10 mm single package. This contributes to the compactness of vehicle information systems. Previously, separate chips were needed to link the RF and the physical layer and the RF and the data link layer. The R-Car W2R leverages Renesas technology to miniaturise analog circuit designs and mixed analog-digital design technology to accurately analyse the effects of noise generated by digital circuits on analog circuits.

3) V2X ecosystem helps system manufacturers reduce development time and costs

To help reduce ADAS design complexity for system manufacturers working with the new R-Car W2R, Renesas has developed a starter kit, which combines all the components required in a V2X unit including the R-Car E2 SoC, which implements security IP ideal for V2X applications, and along with drivers and software verified with Intelligent Transportation System (ITS) protocol partners. The reference design, in which the R-Car W2R is integrated in a compact module with RF components in an optimised design is available with the related design information to help reduce the initial design time and costs. All the components required in a V2X unit including the R-Car E2, which implements security IP ideal for V2X applications are provided as part of a starter kit that also comes with drivers and software verified with ITS protocol partners. The system manufacturers can utilise the starter kit and Renesas ecosystem partners to migrate their own software, reducing the time required for verification testing and other processes.

Renesas plans to offer solutions with support for V2X applications by combining the R-Car W2R with existing R-Car products for cockpit and ADAS applications.

RECENT ARTICLES

Blackline Safety sets new standard in connected worker safety with launch of G6

Posted on: September 26, 2022

San Diego, United States – Blackline Safety Corp., a global provider in connected safety technology, continues to trailblaze in the industrial worker safety market with the launch of a new connected wearable to transform single-gas detection. The all-new G6 personal gas detector – unveiled at the National Safety Council (NSC) Safety Congress & Expo in San Diego

Read more

Senet expands public LoRaWAN network across New York

Posted on: September 26, 2022

Portsmouth, United States – Senet, Inc., a provider of cloud-based software and services platforms that enable global connectivity and on-demand network build-outs for the Internet of Things (IoT) announced it is has expanded the build out of its public LoRaWAN network across all five boroughs of New York City. Through the combined operation of Senet’s

Read more
FEATURED IoT STORIES

9 IoT applications that will change everything

Posted on: September 1, 2021

Whether you are a future-minded CEO, tech-driven CEO or IT leader, you’ve come across the term IoT before. It’s often used alongside superlatives regarding how it will revolutionize the way you work, play, and live. But is it just another buzzword, or is it the as-promised technological holy grail? The truth is that Internet of

Read more

Which IoT Platform 2021? IoT Now Enterprise Buyers’ Guide

Posted on: August 30, 2021

There are several different parts in a complete IoT solution, all of which must work together to get the result needed, write IoT Now Enterprise Buyers’ Guide – Which IoT Platform 2021? authors Robin Duke-Woolley, the CEO and Bill Ingle, a senior analyst, at Beecham Research. Figure 1 shows these parts and, although not all

Read more

CAT-M1 vs NB-IoT – examining the real differences

Posted on: June 21, 2021

As industry players look to provide the next generation of IoT connectivity, two different standards have emerged under release 13 of 3GPP – CAT-M1 and NB-IoT.

Read more

IoT and home automation: What does the future hold?

Posted on: June 10, 2020

Once a dream, home automation using iot is slowly but steadily becoming a part of daily lives around the world. In fact, it is believed that the global market for smart home automation will reach $40 billion by 2020.

Read more

5 challenges still facing the Internet of Things

Posted on: June 3, 2020

The Internet of Things (IoT) has quickly become a huge part of how people live, communicate and do business. All around the world, web-enabled devices are turning our world into a more switched-on place to live.

Read more

What is IoT?

Posted on: July 7, 2019

What is IoT Data as a new oil IoT connectivity What is IoT video So what’s IoT? The phrase ‘Internet of Things’ (IoT) is officially everywhere. It constantly shows up in my Google news feed, the weekend tech supplements are waxing lyrical about it and the volume of marketing emails I receive advertising ‘smart, connected

Read more
IoT Newsletter

Join the IoT Now online community for FREE, to receive: Exclusive offers for entry to all the IoT events that matter, round the world

Free access to a huge selection of the latest IoT analyst reports and industry whitepapers

The latest IoT news, as it breaks, to your inbox