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

Huazhi GONG  Kitae NAHM  JongWon KIM  

IEICE TRANSACTIONS on Information and Systems   Vol.E91-D   No.4   pp.1193-1196
Publication Date: 2008/04/01
Online ISSN: 1745-1361
DOI: 10.1093/ietisy/e91-d.4.1193
Print ISSN: 0916-8532
Type of Manuscript: LETTER
Category: Networks
AP (access point) selection,  wireless networks,  max-min throughput fairness,  and distributed selection algorithm,  

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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.