Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
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A Developed Collision Resolution Algorithm in MAC Protocol for IEEE 802.11b Wireless LANs (ICEIC'04)

  • Chung Kyung Taek (Dept of Electronic Engineering, Kunsan National University) ;
  • Pan Ce (Dept of Electronic Engineering, Chonbuk National University) ;
  • Park Hyun (Dept of Electronic Engineering, Chonbuk National University) ;
  • Kim Byun Gon (Dept of Electronic Engineering, Chonbuk National University) ;
  • Chon Byoung Sil (Dept of Electronic Engineering, Chonbuk National University)
  • Published : 2004.08.01
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Abstract

Design of efficient Medium Access Control (MAC) protocols with both high throughput performances is a major focus in distributed contention-based MAC protocol research. In this paper, we propose an efficient contention-based MAC protocol for wireless Local Area Networks, namely, the Developed Collision Resolution (DCR) algorithm. This algorithm is developed based on the following innovative ideas: to speed up the collision resolution, we actively redistribute the backoff timers for all active nodes; to reduce the average number of idle slots, we use smaller contention window sizes for nodes with successful packet transmissions and reduce the backoff timers exponentially fast when a fixed number of consecutive idle slots are detected. We show that the proposed DCR algorithm provides high throughput performance and low latency in wireless LANs.

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