|Bibliography||Geiger, 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-Schema||C.2.1 (Network Architecture and Design)|
C.2.2 (Network Protocols)
C.2.4 (Distributed Systems)
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 date||March 19, 2009|