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IEICE Transactions on Information and Systems 2008 E91-D(4):1193-1196; doi:10.1093/ietisy/e91-d.4.1193
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Copyright © 2008 The Institute of Electronics, Information and Communication Engineers

Regular Section -- Letters -- Networks

Distributed Fair Access Point Selection for Multi-Rate IEEE 802.11 WLANs

Huazhi GONG1, Kitae NAHM2 and JongWon KIM1,3

1 The authors are with Networked Media Lab., Gwangju Institute of Science & Technology (GIST), Gwangju, Korea. E-mail: hankgong{at}nm.gist.ac.kr, 2 The author is with Samsung Information Systems America, Irvine, CA, USA., 3 Corresponding author.


  Abstract

In IEEE 802.11 networks, the access point (AP) selection based on the strongest signal strength often results in the extremely unfair bandwidth allocation among mobile users (MUs). In this paper, we propose a distributed AP selection algorithm to achieve a fair bandwidth allocation for MUs. The proposed algorithm gradually balances the AP loads based on max-min fairness for the available multiple bit rate choices in a distributed manner. We analyze the stability and overhead of the proposed algorithm, and show the improvement of the fairness via computer simulation.

Key Words: AP (access point) selection, wireless networks, max-min throughput fairness, and distributed selection algorithm

Manuscript received September 3, 2007. Manuscript revised October 20, 2007.


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