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PFA (Persistence Factor Adaptive) Backoff Algorithm for performance improvement of IEEE 802.11e MAC

  • Journal of The Korea Society of Computer and Information
  • Abbr : JKSCI
  • 2009, 14(5), pp.77-83
  • Publisher : The Korean Society Of Computer And Information
  • Research Area : Engineering > Computer Science

유동관 1

1동서울대학교

Accredited

ABSTRACT

In this paper, an improved backoff algorithm is proposed by supplementing a multiple of persistence factor for IEEE 802.11 Wireless LAN MAC. This algorithm is proposed to complement the shortcomings of the conventional BEB (Binary Exponential Backoff) algorithm which is used for retransmission to control a new contention window in DCF/EDCF MAC. In channel utilization, collision rate and Goodput viewpoint, we analysis the improved backoff algorithm and compared the result with that of the conventional algorithm. In this result, we showed that the performance for PFA backoff algorithm is 10% higher than that for the conventional BEB algorithm when the number of station is 40.

Citation status

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