Article in Proceedings INPROC-2009-32

BibliographyGeiger, Lars; Dürr, Frank; Rothermel, Kurt: On Contextcast: A Context-aware Communication Mechanism.
In: IEEE International Conference on Communications, 2009. ICC '09..
University of Stuttgart : Collaborative Research Center SFB 627 (Nexus: World Models for Mobile Context-Based Systems).
pp. 1-6, english.
IEEE Communications Society, June 14, 2009.
Article in Proceedings (Conference Paper).
CR-SchemaC.2.1 (Network Architecture and Design)
C.2.2 (Network Protocols)
C.2.4 (Distributed Systems)
C.2.6 (Internetworking)

The dissemination of messages according to clients' contexts (i.e., location and other attributes) opens up new possibilities in context-aware systems. While geocast or content-based publish/subscribe forward messages according to client location or attributes, respectively, neither uses a combination of the two. In this paper, we present this new communication paradigm and the challenges it poses. We also extend concepts from publish/subscribe networks to efficiently deal with highly dynamic user location to lower update rates by approximating the user's location. This reduces update rates by between 25% and 90%, depending on the granularity of the approximation.

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Department(s)University of Stuttgart, Institute of Parallel and Distributed Systems, Distributed Systems
Project(s)SFB-627, A2 (University of Stuttgart, Institute of Parallel and Distributed Systems, Distributed Systems)
Entry dateMarch 19, 2009
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