Some computer science issues in ubiquitous computing
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EW 9 Proceedings of the 9th workshop on ACM SIGOPS European workshop: beyond the PC: new challenges for the operating system
QuO's runtime support for quality of service in distributed objects
Middleware '98 Proceedings of the IFIP International Conference on Distributed Systems Platforms and Open Distributed Processing
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IEEE Journal on Selected Areas in Communications
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Providing QoS in ontology centered context aware pervasive systems
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Adaptive quality-aware programming with declarative QoS constraints
EuroIMSA '08 Proceedings of the IASTED International Conference on Internet and Multimedia Systems and Applications
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In this paper, we present a novel QoS-aware middleware framework, that seamlessly enables ubiquitous delivery of QoS-aware multimedia applications. The QoS management functions are triggered by not only resource fluctuations but also the user's behavior, movement or even light and time. Those activation events are described using asynchronous messages encoded in XML format. Moreover, the QoS-aware middleware services are no longer targeted to applications or devices but users. The QoS management functions are individualized according to the user's preferences and life routines. We have implemented a prototype of our middleware framework as part of the Gaia OS [4], an active space enabling infrastructure. Our experiments with the ubiquitous multimedia streaming application show the soundness of our framework.