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http://dx.doi.org/10.5392/JKCA.2011.11.11.034

Performance Analysis of the IEEE 802.11 DCF on Applying Maximum Contention Window at Collision  

Lim, Seog-Ku (백석대학교 정보통신학부)
Publication Information
The Journal of the Korea Contents Association / v.11, no.11, 2011 , pp. 34-41 More about this Journal
Abstract
The MAC of IEEE 802.11 WLAN to control data transmission uses two control methods called DCF and PCF. The DCF uses BEB backoff algorithm based on CSMA/CA. The BEB backoff algorithm shows excellent performance relatively in situation that competition between stations is less, but its performance is decreases as the competition increases. This paper proposes and analyses mathematically an enhanced backoff algorithm. To reduce the collision probability, the proposed algorithm increases the contention window to maximum after collision and decreases the contention window smoothly after successful transmission. To prove efficiency of proposed algorithm, simulations are conducted and analyzed.
Keywords
IEEE 802.11; WLAN; Bckoff Agorithm; Saturation Throughput; Retry Limit;
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