Abstract
Applications of inter-vehicle and vehicle-to-roadside communication that make use of vehicular ad hoc networks (VANETs) will often require reliable communication that provides guaranteed real-time message propagation. This paper describes an event-based middleware, called RT-STEAM, designed to meet these requirements. Unlike other event systems, RT-STEAM does not rely on a centralized event broker or look-up service while still supporting event channels providing hard real-time event delivery. RT-STEAM event filtering can be based on subject, content and/or proximity. Proximity filters define geographical areas within which events are delivered. To guarantee real-time communication, we exploit proximity-based event propagation to guarantee real-time constraints within the defined proximities only. The proximity within which real-time guarantees are available is adapted to maintain time bounds while allowing changes to membership and topology as is typical of VANETs. This Space-Elastic Model of real-time communication is the first to directly address adaptation in the space domain to guarantee real-time constraints.
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Meier, R., Hughes, B., Cunningham, R., Cahill, V. (2005). Towards Real-Time Middleware for Applications of Vehicular Ad Hoc Networks. In: Kutvonen, L., Alonistioti, N. (eds) Distributed Applications and Interoperable Systems. DAIS 2005. Lecture Notes in Computer Science, vol 3543. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11498094_1
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DOI: https://doi.org/10.1007/11498094_1
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