Abstract
This paper describes the AGORA-C method for map-based on-the-fly location referencing. Unlike the traffic message channel, location referencing based on precoding locations and location tables, the code is created when needed from a map database in the sending system, transmitted in a message, decoded with the map database in the receiving system, and then discarded. The presented method is a follow-up of earlier work in the AGORA project to improve code size and hit rate. The method now consists of a core profile for traffic information and hazard warning applications and an optional extended profile for destination locations that may not be present in the receiving map database. Extensive tests demonstrated a hit rate of about 98% and an average code size not larger than 34 bytes, which is well below the generally agreed number of 50 bytes for maximum acceptable average code size. The method is adopted for the Transport Protocol Expert Group automotive protocol, which is under development.
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Schedule a callMore From: Transportation Research Record: Journal of the Transportation Research Board
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