Evaluation of the distributed fuzzy contention control for IEEE 802.11 wireless LANs

Authors:
Young-Joong Kim;Jeong-On Lee;Myo-Taeg Lim
Affiliations:
Department of Electrical Engineering, Korea University, Seoul, Korea;Department of Electrical Engineering, Korea University, Seoul, Korea;Department of Electrical Engineering, Korea University, Seoul, Korea
Venue:
KES'06 Proceedings of the 10th international conference on Knowledge-Based Intelligent Information and Engineering Systems - Volume Part III
Year:
2006

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Abstract

In our previous works, we focused on run-time optimization of the IEEE 802.11 protocol to improve its performance using a well-known fuzzy logic approach. Specifically, we derived the simple, and more accurate, approximation of the network contention level and the average size of contention window to maximize the theoretical throughput limit. In addition, we proposed the distributed fuzzy contention control (DFCC) mechanism using a fuzzy logic approach. In this paper, we propose the extension of the DFCC mechanism with a priority mechanism. To verify efficiency and robustness of our mechanism, the performance of the IEEE 802.11 standard protocol with the extension of DFCC mechanism are investigated through more realistic scenarios.