Middleware Support for Context-Awareness in 4G Environments

Authors:
Thomas Springer;Kay Kadner;Frank Steuer;Ming Yin
Affiliations:
TU Dresden, Germany;TU Dresden, Germany;Technical University of Berlin, Germany;T-Systems International GmbH, Germany
Venue:
WOWMOM '06 Proceedings of the 2006 International Symposium on on World of Wireless, Mobile and Multimedia Networks
Year:
2006

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Abstract

Context-awareness is a key technology for adaptive software systems. While past and recent research effort investigated the gathering of low-level information, implementation- and domain-driven approaches for context frameworks and conceptual models of context, vertical approaches combining the aspects of modeling, and implementation are still missing. In this paper, we propose a scalable and distributed context service for integrating heterogeneous context sources in large-scale mobile environments based on a layered context model enabling the modeling and support of multiple domain-specific context models. We implemented an adaptive multimedia messaging system on top of a 4G mobile communication testbed which supports the context-dependent selection of codecs and communication modes to validate our approach.