A Scheme of Avoiding Occupied Channel in Overlapped Wireless LANs


Myong-Lyol Song, Journal of Information Processing Systems Vol. 10, No. 1, pp. 33-42, Feb. 2009  


Keywords: overlapped WLAN, IEEE 802.11b, active scan, Interference, hidden node
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Abstract

Signals transmitted from access point (AP) or stations in different wireless LANs (WLAN) interfere each other when the WLANs are closely installed. When they are configured to use the same channel, signals from an WLAN get collided with signals from other WLANs so that the delay increases to user stations and the throughput decreases. In this paper, we propose a method in which an AP in a basic service set (BSS) detects other BSSs using the same channel and switches to a different channel not being occupied by any other BSS. We can avoid using the same channel with other BSS in spacially overlapped BSS environment. The proposed scheme is simulated and its characteristics are described with the analysis of the result. The results measured in terms of throughput show that the problems in overlapped wireless LANs can be resolved with the proposed method.


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Cite this article
[APA Style]
Song, M. (2009). A Scheme of Avoiding Occupied Channel in Overlapped Wireless LANs. Journal of Internet Computing and Services, 10(1), 33-42.

[IEEE Style]
M. Song, "A Scheme of Avoiding Occupied Channel in Overlapped Wireless LANs," Journal of Internet Computing and Services, vol. 10, no. 1, pp. 33-42, 2009.

[ACM Style]
Myong-Lyol Song. 2009. A Scheme of Avoiding Occupied Channel in Overlapped Wireless LANs. Journal of Internet Computing and Services, 10, 1, (2009), 33-42.