An Overlay Architecture for Vehicular Networks
We propose and discuss an overlay architecture relying on a mobile ad hoc network, called Arigatoni on wheels (Ariwheels for short). More specifically, Ariwheels is a virtual network organization that is designed for a vehicular network underlay environme
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INRIA Sophia Antipolis M´editerran´ee, France [email protected] Dipartimento di Elettronica, Politecnico di Torino, Italy [email protected]
Abstract. We propose and discuss an overlay architecture relying on a mobile ad hoc network, called Arigatoni on wheels (Ariwheels for short). More specifically, Ariwheels is a virtual network organization that is designed for a vehicular network underlay environment. It provides efficient and transparent service advertising and retrieves services carried by on-board and roadside nodes. The paper outlines application scenarios for Ariwheels and evaluates them through simulation in a realistic vehicular environment.
1 Introduction The explosive growth of the information technology fosters the design of large programmable overlay networks connecting virtual organizations of computers. These are capable of providing a rich spectrum of services through the use of aggregated computational power, storage and services. The main idea of programmable overlay networks is to realize computation, storage and information retrieval via a seamless, geographically distributed, open-ended network of bounded services owned by “Agents” and “Brokers”, acting with partial knowledge and no central coordination. To make these services accessible to all Agents, an efficient and scalable communication protocol among them needs to be devised. Arigatoni [1] is a structured multi-layer overlay network which provides service discovery with variable guarantees in a virtual organization, where peers can dynamically appear, disappear, and self-organize. To the best of our knowledge, Arigatoni is the first fully–programmable overlay architecture. It dictates how and where services are declared and discovered in the overlay, allowing peers to make secure use of global services. Thanks to such features, Arigatoni appears to be the natural choice for information delivery and sharing in a urban vehicular environment. In the context of mobile ad hoc networks, solutions previously proposed in the literature have addressed service discovery [2] and subscription for mobile users. In particular, the works in [3,4] present service discovery protocols that are based on the deployment of a virtual backbone of directories within an infrastructure-less network. Each node composing the backbone acts as a service Broker by performing service
This work is supported by AEOLUS FP6-IST-FET Proactive, INRIA Sophia M´editerran´ee through the project Colors-Ariwheels, University of Nice Sophia Antipolis, and by the Regione Piemonte through the project VICSUM.
A. Das et al. (Eds.): NETWORKING 2008, LNCS 4982, pp. 60–71, 2008. c IFIP International Federation for Information Processing 2008
An Overlay Architecture for Vehicular Networks
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discovery in its proximity, while global service discovery is provided by the cooperative action of the directories. In [5], service publishing and subscribing, i.e., the way clients and servers are matched together, is addressed: a cross-layer approach is applied, which leve
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