Freenet: a distributed anonymous information storage and retrieval system
International workshop on Designing privacy enhancing technologies: design issues in anonymity and unobservability
OceanStore: an architecture for global-scale persistent storage
ASPLOS IX Proceedings of the ninth international conference on Architectural support for programming languages and operating systems
A scalable content-addressable network
Proceedings of the 2001 conference on Applications, technologies, architectures, and protocols for computer communications
Maté: a tiny virtual machine for sensor networks
Proceedings of the 10th international conference on Architectural support for programming languages and operating systems
Profile-matching techniques for on-demand software management in sensor networks
EURASIP Journal on Wireless Communications and Networking
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Wireless sensor networks have become a very attractive research topic in recent years. Many academic and professional research groups made efforts to construct operative hardware devices and sophisticated software to meet the special conditions in their projects. But still there has been little done to create a general structure for smart sensors to cooperate and to offer their services to human or software clients. In this paper we present first results of our investigations in this topic. As a test scenario and source of inspiration we set up a sensor network prototype in an office situation, where the physical environment should be measured and adjusted according to specific conditions. In particular the light and humidity state of potted plants within an office should be autonomously adjusted to the plants' special needs as most research associates in our lab forget to care for their plants on a regular basis. On the basis of this prolific scenario we introduce a first stage middleware system architecture providing service distribution and accomplishment within wireless sensor networks. Core components of the architecture have been implemented in hardware and software to show the feasibility and abilities of our approach.