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Integrated Real-Time Scheduling Strategy Based on Small-Scale Wireless Sensor Networks

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Abstract:

Nowadays, increasing attention has been directed towards the issue of timelines for real-time systems with wireless sensor network. However, the study of integrated real-time schedule strategy is rare. In this paper, we propose a novel real-time schedule strategy HRTSS (hard real-time schedule strategy) which meets time constraints of periodic tasks and sporadic tasks which exclusively access shared resources. For this purpose, we present the bus schedule table models of periodic tasks and sporadic tasks and resources access for shared resources. Based on these models, we present the accurate deadline-meeting schedule sequences which do not reach deadlock states. In addition, we further show that schedulability analysis can be done and the real-time scheduler is feasible in the small scale wireless sensor networks.

Keywords: BUS SCHEDULE TABLE; REAL-TIME SYSTEM; SCHEDULE STRATEGY; WIRELESS SENSOR NETWORK

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/sl.2011.1533

Publication date: October 1, 2011

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  • The growing interest and activity in the field of sensor technologies requires a forum for rapid dissemination of important results: Sensor Letters is that forum. Sensor Letters offers scientists, engineers and medical experts timely, peer-reviewed research on sensor science and technology of the highest quality. Sensor Letters publish original rapid communications, full papers and timely state-of-the-art reviews encompassing the fundamental and applied research on sensor science and technology in all fields of science, engineering, and medicine. Highest priority will be given to short communications reporting important new scientific and technological findings.
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