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Title: Game-theoretic analysis of multibandwidth channel selection by coordinated APs in WLANs
Authors: HANADA, Kohei
YAMAMOTO, Koji  kyouindb  KAKEN_id
MORIKURA, Masahiro  kyouindb  KAKEN_id
ISHIHARA, Koichi
KUDO, Riichi
Keywords: wireless LAN
multibandwidth
channel selection
IEEE 802.11ac
overlapping BSS
game theory
Issue Date: Jun-2013
Publisher: Institute of Electronics, Information and Communication Engineers(IEICE)
Journal title: IEICE Transactions on Communications
Volume: E96-B
Issue: 6
Start page: 1277
End page: 1287
Abstract: As the demand for high-throughput communications in wireless LANs (WLAN) increases, the need for expanding channel bandwidth also increases. However, the use of wider band channels results in a decrease in the number of available channels because the total available bandwidth for WLAN is limited. Therefore, if multiple access points (APs) are in proximity and the cells overlap, it is difficult for each AP to use an orthogonal channel and competition increases between APs using the same channel. Coordination of APs is one promising approach; however, it is impractical to control all APs in WLAN systems. To cope with this problem, we proposed to analyze throughput performances of a multibandwidth channel selection by the coordinating APs at Nash equilibria, which can be considered as operating points for independent channel selection by APs. To clarify the effect of coordinating APs, we assume a simple scenario where the cells of three or more APs overlap, and each AP can select multibandwidth channels to maximize their own throughput. Through game-theoretic analysis, we find that the coordinated APs are able to select channels more effectively than if each AP independently selects channels. Consequently, the total throughput of the coordinated APs at Nash equilibria is significantly improved.
Rights: © 2013 The Institute of Electronics, Information and Communication Engineers
URI: http://hdl.handle.net/2433/193075
DOI(Published Version): 10.1587/transcom.E96.B.1277
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