A broad IVHS communication architecture is described which features near-term implementation and affordability for basic user-services (real time traffic reports, tolling, safety warnings) and includes higher level services such as navigation and route guidance. Four enabling communication techniques are exploited: 1) wide area broadcasting services including the near-term RDS (RBDS) FM subcarrier and future DAB (Digital Audio Broadcast) systems integrated into entertainment receivers; 2) short-range vehicle to roadside communication (VRC/electronic tolling); 3) new IVHS frequency allocations in the 220 MHz band; and 4) a full coverage MAYDAY system. These four techniques appear capable of flexibly delivering the entire range of IVHS user-services and offer options for traffic authorities to match their local conditions. The digital RDS subcarrier is used to identify traffic announcements on both the main audio channel and possible subcarriers containing traffic reports to effect an affordable Traveler Advisory system. An open-road VRC approach using microwave frequencies provides a range of user-services (tolling, traveler services, in-vehicle signing). Safety warnings and a local information channel are delivered via a digital 200 MHz communication system. MAYDAY, a specialized emergency messaging service, is handled by existing or developing services such as cellular telephone.
An evolutionary IVHS communication architecture
Eine evolutionare IVHS (Intelligent Vehicle Highway System)-Kommunikationsarchitektur
1993
6 Seiten, 4 Bilder, 13 Quellen
Conference paper
English
An Evolutionary IVHS Communication Architecture
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