Multi-level service differentiation scheme for the IEEE 802.15.4 sensor networks

Authors:
Euijik Kim;Meejoung Kim;Sungkwan Youm;Seokhoon Choi;Chul-Hee Kang
Affiliations:
Department of Electronics Engineering, Korea University, Seoul, Korea;Research Institute for Information and Communication Technology, Korea University, Seoul, Korea;Department of Electronics Engineering, Korea University, Seoul, Korea;Department of Electronics Engineering, Korea University, Seoul, Korea;Department of Electronics Engineering, Korea University, Seoul, Korea
Venue:
EUC'05 Proceedings of the 2005 international conference on Embedded and Ubiquitous Computing
Year:
2005

Citing 2
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Abstract

In the sensor networks, the data packets transmitted by the different devices in the home networking and the industrial application maintain the different levels of importance. In this paper, we propose two mechanisms for the IEEE 802.15.4 sensor networks to provide the multi-level differentiated services which are required by each and every device. The mathematical model based on the discrete-time Markov chain is presented and is analyzed to measure the performances of the proposed mechanisms. The numerical results show the effect of the variation of the contention window size and the backoff exponent for the service differentiation on the 802.15.4 sensor networks. From the results, we derive that the contention window size is more affective than the backoff exponent on the service differentiation while the backoff exponent is more affective than the contention window size on the average delay of every device. Simulation results are also given to verify the accuracy of the numerical model.