Dynamic association in IEEE 802.11 based wireless mesh networks

Authors:
Hui Wang;Wai-Choong Wong;Wee-Seng Soh;Mehul Motani
Affiliations:
Department of Electrical and Computer Engineering, National University of Singapore, Singapore;Department of Electrical and Computer Engineering, National University of Singapore, Singapore;Department of Electrical and Computer Engineering, National University of Singapore, Singapore;Department of Electrical and Computer Engineering, National University of Singapore, Singapore
Venue:
ISWCS'09 Proceedings of the 6th international conference on Symposium on Wireless Communication Systems
Year:
2009

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Abstract

In this paper, we propose a dynamic association mechanism that takes load balancing, link quality and association oscillation avoidance into consideration. The metric introduced in this association mechanism measures the real-time traffic load through channel based load detection and suits both coordinated and uncoordinated wireless mesh networks. Because of the random characteristics of wireless links and the variability of network conditions, dynamic re-association should be involved. To avoid association oscillation during re-associations, we introduce oscillation avoidance schemes, which consist of periodic client station (STA) scan and re-association threshold. We further evaluate our dynamic association mechanism through simulations in the context of IEEE 802.11 based wireless mesh networks.