Optimization of the Capacity of Wireless Mesh Networks

Christelle Molle 1
1 MASCOTTE - Algorithms, simulation, combinatorics and optimization for telecommunications
CRISAM - Inria Sophia Antipolis - Méditerranée , Laboratoire I3S - COMRED - COMmunications, Réseaux, systèmes Embarqués et Distribués
Abstract : This is a summary of the authors PhD thesis supervised by Hervé Rivano and defended on 29 October 2009 at the Université de Nice-Sophia Antipolis. The thesis is written in French and is available from http://tel.archives-ouvertes.fr/tel-00428940/. This work deals with the optimization of the capacity of wireless mesh networks, defined as the throughput offered to each flow. We develop optimization models integrating the cross-layer characteristics of radio communications. The joint routing and scheduling is studied and solved using column generation. A linear formulation focusing on the transport capacity available on the network cuts is derived. We prove the equivalence of the models, and adapt the resolution method into a cross line and column generation process. Thorough tests, a contention area located around the gateways which constraints the capacity is highlighted. These results are applied to a quantitative study of the effects of acknowledgments on the capacity. Finally, a stability study of a protocol routing a traffic injected arbitrarily is investigated.
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Submitted on : Thursday, October 6, 2011 - 11:21:13 AM
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Christelle Molle. Optimization of the Capacity of Wireless Mesh Networks. 4OR: A Quarterly Journal of Operations Research, Springer Verlag, 2010, 8 (4), pp.425-428. ⟨10.1007/s10288-010-0132-x⟩. ⟨inria-00629556⟩



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