Real-Time Communications Over Cluster-Tree Sensor Networks with Mobile Sink Behaviour

  • Authors:
  • Petr Jurcík;Ricardo Severino;Anis Koubâa;Mário Alves;Eduardo Tovar

  • Affiliations:
  • -;-;-;-;-

  • Venue:
  • RTCSA '08 Proceedings of the 2008 14th IEEE International Conference on Embedded and Real-Time Computing Systems and Applications
  • Year:
  • 2008

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Abstract

Modelling the fundamental performance limits of Wireless Sensor Networks (WSNs) is of paramount importance to understand the behaviour of WSN under worst case conditions and to make the appropriate design choices. In that direction, this paper contributes with a methodology for modelling cluster tree WSNs with a mobile sink. We propose closed form recurrent expressions for computing the worst case end to end delays, buffering and bandwidth requirements across any source-destination path in the cluster tree assuming error free channel. We show how to apply our theoretical results to the specific case of IEEE 802.15.4/ZigBee WSNs. Finally, we demonstrate the validity and analyze the accuracy of our methodology through a comprehensive experimental study, therefore validating the theoretical results through experimentation.