In intelligent transportation environments, cars communicate with each other and with roadside infrastructure to improve travel comfort and safety.
Intelligent transportation uses intelligent cooperative systems ( ICS) and cooperative vehicle-infrastructure systems (CVIS) for continuous vehicle-tovehicle and vehicle-to-infrastructure communication and services. This increases the quality and reliability of information available to drivers on their traffic environment and makes more detailed traffic information available to road authorities and operators. Both are important in decreasing congestion, improving road safety, and for better use of available networks and faster responses to transportation related incidents.
Open Platform for Cooperative Vehicle-Infrastructure Systems (CVIS)
A single unified technical solution allowing all road vehicles and road infrastructure to maintain continuous communications between drivers, vehicles, goods, and transport infrastructure. It is based on vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) communications. This allows all road vehicles, and the road infrastructure, to maintain continuous communication via a range of media and with highly accurate localization.
This open platform is built on an open architecture and system concept for a spectrum of applications, with common core components to support real-life applications and services. Applications include:
- Real-life applications using 5.9 GHz wireless LAN and cellular 3G communication media.
- In-vehicle and cooperative services for increased road safety, efficiency, and traveler convenience
- A power-and space-efficient rooftop antenna unit containing following individual antennas can be used:
o Dedicated short -range communications (DSRC), wireless channels specifically designed for automotive
o Global positioning system (GPS)
o Broadband GSM/UMTS antenna, named CALM 2G/3G
o Two broadband WLAN antennas, named CALM M5, provide on and off-road Wi-Fi connections
Intelligent routers Reduce Cabling Complexity
Earlier, vehicle communications system consumed too much power and required a cumbersome cable, about 5 centimeters (2 inches) wide. Intel Atom–based router/antennas have eliminated discrete wiring for each radio type by turning the platform into a router with five output channels (DSRC, GPS, GSM, and two CALM M5), all requiring real-time processing.
- Cabling complexity is reduced because the Intel Atom processor satisfies the network processing and low-latency requirements of a complex router.
- The universal platform based on the Intel Atom processor connects vehicles and roadside systems continuously and seamlessly using a wide range of communication media, including mobile cellular and wireless local area networks, short -range microwave or infrared.
- The vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) communications are based on five in-vehicle radios. For example, vehicles communicate with each other via a DSRC channel, sharing information on vehicle speed and proximity. Vehicles communicate with the transportation infrastructure, such as gas stations and toll booths, using the infrared link. Drivers can monitor their location using GPS, make phone calls over UMTS and connect to the Internet.
- The board supporting the platform is smaller than the prior generation because of the low power and small footprint of the Intel processor and chipset.
- The cabling is less complex since the computing power of the processor is used to implement a router that multiplexes the wiring for the five radios.
By increasing the information available about the vehicle and its environment, CVIS enables the following benefits:
- Improved traffic safety by helping drivers keep a safe distance from one another, thereby preventing accidents and consequently reducing road congestion.
- Increased efficiency of the transportation system by allowing vehicles to communicate directly with the infrastructure and one another, enabling drivers to make bet ter decisions about their routes with respect to congestion and accidents.
- Improved energy efficiency and better environment by helping drivers choose the most environment-friendly journey, and traffic managers reduce fuel consumption in the network.