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A Dynamic Minimum Contention Window for Collision Resolution in IEEE 802.11 Distributed Coordination Function)  

Woo, Sung-Je (성균관대학교 전기전자 및 컴퓨터 공학과 네트워크 시스템 연구실)
Lee, Tae-Jin (성균관대학교 전기전자 및 컴퓨터 공학과 네트워크 시스템 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.29, no.9A, 2004 , pp. 1075-1082 More about this Journal
Abstract
Wireless LAN is a rather mature communication technology connecting mobile terminals. IEEE 802.11 is a representative protocol among Wireless LAN technologies. The basic medium access control (MAC) mechanism of IEEE 802.11 is called distnbuted coordination function (DCF). DCF shows poor throughput and high drop rate as the number of stations and offered traffic load increase. In this paper we propose an effective mechanism using dynamic mimmum contention window(CWmin) in wireless LAN~ and show that performance improves via simulations. Proposed dynamic CWmin scheme exhibits superior performance as the number of stations and offered load grow. As, our proposed scheme is expected to be more effective in highly densed wireless LAN environment.
Keywords
DCF; Backoff; Minimum Contention Window;
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  • Reference
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