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Title:Distributed Optimal Contention Window Control for Elastic Traffic in Wireless LANs
Author(s):Yang, Yaling; Wang, Jun; Kravets, Robin
Subject(s):Wireless Networks
Abstract:This paper presents a distributed contention window control control algorithm, GCA (General Contention window Adaptation), that achieves various bandwidth allocation policies and at same time efficient channel utilization. By modeling different bandwidth allocation policies as optimization problems of contention window assignment, we are able to design GCA and prove that it converges to the solution of the contention window assignment problem. By examining the stability properties of GCA, we identify the optimal stable point that maximizes channel utilization and provide solutions to control the stable point of GCA near the optimal point. Simulation results show that GCA achieves fairness and efficiency. Due to the generality of GCA, our work provides a theoretical foundation to analyze existing and design new contention window control algorithms.
Issue Date:2004-04
Genre:Technical Report
Rights Information:You are granted permission for the non-commercial reproduction, distribution, display, and performance of this technical report in any format, BUT this permission is only for a period of 45 (forty-five) days from the most recent time that you verified that this technical report is still available from the University of Illinois at Urbana-Champaign Computer Science Department under terms that include this permission. All other rights are reserved by the author(s).
Date Available in IDEALS:2009-04-14

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