Circuits and Systems: An International Journal (CSIJ) 1 (1): 11-18 (January 2014)

In Recent era, researchers attention is get magnetize towards a widely used technology known as a wireless sensor networks (WSNs) used in the many of applications related to variety of fields including military, healthcare monitoring, biological, home, vehicular monitoring, infrastructure monitoring, building energy monitoring and industrial sensing. Many of applications in WSNs are real time applications that are requested to run in real time way. To support such real time applications we need Real Time Operating System (RTOS) which provides logically correct results and also deadline has to be met. This paper presents an overview of existing scheduling algorithms which helps to schedule tasks in real time systems. Next, we discuss work in sensornet operating system (OS) design. Then, the specialties what sensornet OS should posses are discussed in detail. At last, we proposed Micro Controller OS-II (µC/OS-II) with Earliest Deadline First (EDF) algorithm.
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