The New Infrared Road Site Transmitter Brings ISO CALM on the Street
Andreas Schalk, Hannes Stratil · 15th World Congress on Intelligent Transport Systems and ITS America's 2008 Annual MeetingITS AmericaERTICOITS JapanTransCore · 2008
The family of International Standards for Communication Architecture for Land Mobile environment (CALM) are the new ISO-Standards for car-to-car and car-to-infrastructure communication. While Cellular or Metropolitan Area Networks contributes the WAN connectivity covers Microwave-LANs the mid-range. Infrared adds finally the capability to communicate in predefined directions and to detect the communication-distance to the partner by time-of-light measurement. An essential key requirement of future ITS communication is the ability to set up ad-hoc connections and to transmit KBytes of data in a few milliseconds. The most crucial and time consuming part in a multinode environment is the link-setup procedure, especially in a free space situation with unpredictable and fast changing link conditions. Infrared communication has outstanding capabilities to shape communication zones according to user-requirements, features high data rate for up- and download, and offers, due to the beaming characteristics, high reliability and protection of privacy. Due to the participation of EFKON in the European project CVIS and COOPERS, infrared equipment will be installed in vehicles and mounted on gentries at several test sites in Europe. Technique and functionality of the Infrared equipment will be announced in this document.