Filter-Based Collision Resolution Mechanism of IEEE 802.11 DCF in Noisy Environments 


Vol. 32,  No. 9, pp. 905-915, Sep.  2007


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  Abstract

This paper proposes a filter-based algorithm to adaptively adjust the contention window in IEEE 802.11 DCF. The proposed mechanism is focused on the general and realistic environments that have various conditions regarding to noise, media types and network load. For this flexible adaptation, Filter-based DCF(FDCF) takes a more realistic policy such as median filter concept in the image processing technologies. We can handle these various environments by adjusting the contention window size according to the result of filtering based on history-buffer. We can ignore temporarily and randomly occurred transmission failures due to noise errors and collisions in noisy environments. In addition, by changing the reference number and history-buffer size, FDCF can be extended as a general solution including previous proposed mechanism. We have confirmed that the proposed mechanism can achieve the better performance than those of previous researches in aspects of the throughput and the delay in the realistic environments.

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  Cite this article

[IEEE Style]

S. Yoo, "Filter-Based Collision Resolution Mechanism of IEEE 802.11 DCF in Noisy Environments," The Journal of Korean Institute of Communications and Information Sciences, vol. 32, no. 9, pp. 905-915, 2007. DOI: .

[ACM Style]

SangShin Yoo. 2007. Filter-Based Collision Resolution Mechanism of IEEE 802.11 DCF in Noisy Environments. The Journal of Korean Institute of Communications and Information Sciences, 32, 9, (2007), 905-915. DOI: .

[KICS Style]

SangShin Yoo, "Filter-Based Collision Resolution Mechanism of IEEE 802.11 DCF in Noisy Environments," The Journal of Korean Institute of Communications and Information Sciences, vol. 32, no. 9, pp. 905-915, 9. 2007.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880