Performance evaluation of wireless sensor network with hybrid channel access mechanism

Authors:
Prasan Kumar Sahoo;Jang-Ping Sheu;Yu-Chia Chang
Affiliations:
Department of Computer Science and Information Engineering, National Central University, Chungli 32054, Taiwan, ROC and Department of Information Management, Vanung University, Chungli 32061, Taiw ...;Department of Computer Science, National Tsing Hua University, Hinchu 30013, Taiwan, ROC;Department of Computer Science and Information Engineering, National Central University, Chungli 32054, Taiwan, ROC
Venue:
Journal of Network and Computer Applications
Year:
2009

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Abstract

In this paper, a hybrid channel access mechanism is proposed for the wireless sensor network that considers the channel access procedure of IEEE 802.15.4 and combines the binary exponential backoff mechanism of IEEE 802.11 due to packet collision of nodes after successful channel assessment. Taking the backlogged nodes due to collision, an extended linear feedback model is developed and a discrete-time Markov chain model is designed to analyze the successful and failure probabilities of the system model of the wireless sensor network. Besides, an energy consumption model for the one hop wireless sensor network is developed based on our models and hybrid channel access mechanism. Extensive performance analysis are done to study the effect of binary exponential contention window on energy consumption of the nodes and it is verified that our simulation results totally match with the theoretical results for different size of contention windows and node numbers.