Throughput Gateways-Congestion Trade-Off in Designing Multi-Radio Wireless Networks |
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Authors: | Djohara Benyamina Abdelhakim Hafid Michel Gendreau |
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Affiliation: | (1) IRO Department, University of Montreal, Montreal, Canada |
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Abstract: | In Wireless Mesh Networks (WMNs), traffic is mainly routed by WMN Backbone (WMNB) between the mesh clients and the Internet
and goes through mesh gateways. Since almost all traffic has to pass through one of the MGs, the network may be unexpectedly
congested at one or more of them, even if every mesh router provides enough throughput capacity. In this paper, we address
the problem of congestion of gateways while designing WMNs. We propose a simultaneous optimization of three competing objectives,
namely network deployment cost, interference between network channels and congestion of gateways while guaranteeing full coverage
for mesh clients. We tailor a nature inspired meta-heuristic algorithm to solve the model whereby, several trade-off solutions
are provided to the network planner to choose from. A comparative experimental study with different key parameter settings
is conducted to evaluate the performance of the model. |
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