Performance model for IEEE 802.11s wireless mesh network deployment design

Authors:
Timo Vanhatupa;Marko Hännikäinen;Timo D. Hämäläinen
Affiliations:
Tampere University of Technology, Institute of Digital and Computer Systems, Korkeakoulunkatu 1, FI-33720 Tampere, Finland;Tampere University of Technology, Institute of Digital and Computer Systems, Korkeakoulunkatu 1, FI-33720 Tampere, Finland;Tampere University of Technology, Institute of Digital and Computer Systems, Korkeakoulunkatu 1, FI-33720 Tampere, Finland
Venue:
Journal of Parallel and Distributed Computing
Year:
2008

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Abstract

This paper presents a performance model developed for the deployment design of IEEE 802.11s Wireless Mesh Networks (WMN). The model contains seven metrics to analyze the state of WMN, and novel mechanisms to use multiple evaluation criteria in WMN performance optimization. The model can be used with various optimization algorithms. In this work, two example algorithms for channel assignment and minimizing the number of mesh Access Points (APs) have been developed. A prototype has been implemented with Java, evaluated by optimizing a network topology with different criteria and verified with NS-2 simulations. According to the results, multirate operation, interference aware routing, and the use of multiple evaluation criteria are crucial in WMN deployment design. By channel assignment and removing useless APs, the capacity increase in the presented simulations was between 230% and 470% compared to a single channel configuration. At the same time, the coverage was kept high and the traffic distribution fair among the APs.