IMPACT OF THE OPERATING SYSTEM ON THE QOS OFFERED BY AN IEEE 802.15.4-COMPLIANT SENSOR NETWORK

This paper presents a toolsuite for rapid prototyping and implementation of real-time applications on Wireless Sensor Networks. The work is motivated by the need to use WSNs in industrial control contexts, where the sampling rate, the workload and much higher than typical current applications of WSNs, and the real-time constraints are much tighter. We present a simulator for early evaluation of the real-time behavior of a WSN application; and a real-time operating system that implement appropriate real-time scheduling policies to allow timing analysis and guarantee timing constraints. After presenting the structure and the characteristics of both tools, we show that the results of the simulation are in line with experimental results of the implementation of a simple but realistic network scenario.