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Hofmeijer, T.J. and Dulman, S.O. and Jansen, P.G. and Havinga, P.J.M. (2005) AmbientRT - real time system software support for data centric sensor networks. Technical Report TR-CTIT-05-02, Centre for Telematics and Information Technology University of Twente, Enschede. ISSN 1381-3625
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Official URL: http://www.ub.utwente.nl/webdocs/ctit/1/00000116.pdf
We present the architecture and design of a real time operating system for mobile wireless sensor networks. AmbientRT is being developed for environments with very limited resources in order to relieve the burden of the developer and to efficiently use the resources of the node. This paper presents the main concepts used and trade-offs involved in the system. Initial results show that with the current hardware available for sensor networks, the real time concept is feasible. For real-time scheduling we have designed EDFI. EDFI is a lightweight real-time scheduling protocol that combines EDF with deadline inheritance over shared resources. EDFI is precise with task admission control, very efficient with scheduling and dispatching, and straightforward in feasibility analysis.
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