Showing papers on "Vehicular communication systems published in 1991"

Protocols for mobile short range communication based on transponders

Abstract: A difficult task in road traffic is to increase safety. A possible solution for this is direct vehicle-to-vehicle communication, with transmission of a car's position, speed, and the driver's intention. Microwave transponder techniques have been proposed for such a system. The authors propose medium-access control protocols well suited for use with transponder techniques. Simulation results are very encouraging and indicate that global synchronization is not absolutely necessary to achieve high-performance channel access. >

A future with smarter cars and smarter highways

Abstract: Defines the 4 areas of IVHS and describes major research programs in the United States, Europe, and Japan

COMBINE: modular system for communication and relative positioning for short-range mobile radio networks

Abstract: COMBINE, a modular system combining communication, identification, and relative positioning for vehicle-to-vehicle and vehicle-to-infrastructure communication in an IRTE network, is presented. The ability of the COMBINE system to configure the equipment properly to serve just those RTI (road traffic informatics) applications which are of importance to a specific user group makes it highly cost efficient. The functionality of the recently developed communication protocols for the physical layer, the data link layer, and the network layer of the short-range mobile radio network is discussed. The higher-layer protocols are mainly based on widely used standard protocols (ISO/OSI) and cover any services known for computer communication networks. Internetting and gateway protocols support the interconnection between the IRTE network and other public/private networks. Therefore, the proposed COMBINE system satisfies the demands of any communication related RTI application supporting driver information and therefore traffic safety and efficiency. >