Gateway placement for throughput optimization in wireless mesh networks

  • Authors:
  • Fan Li;Yu Wang;Xiang-Yang Li;Ashraf Nusairat;Yanwei Wu

  • Affiliations:
  • Department of Computer Science, University of North Carolina, Charlotte, NC;Department of Computer Science, University of North Carolina, Charlotte, NC;Department of Computer Science, Illinois Institute of Technology, Chicago, IL;Department of Computer Science, Illinois Institute of Technology, Chicago, IL;Department of Computer Science, Illinois Institute of Technology, Chicago, IL

  • Venue:
  • Mobile Networks and Applications
  • Year:
  • 2008

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Abstract

In this paper, we address the problem of gateway placement for throughput optimization in multi-hop wireless mesh networks. Assume that each mesh node in the mesh network has a traffic demand. Given the number of gateways to be deployed (denoted by k) and the interference model in the network, we study where to place exactly k gateways in the mesh network such that the total throughput is maximized while it also ensures a certain fairness among all mesh nodes. We propose a novel grid-based gateway deployment method using a cross-layer throughput optimization, and prove that the achieved throughput by our method is a constant times of the optimal. Simulation results demonstrate that our method can effectively exploit the available resources and perform much better than random and fixed deployment methods. In addition, the proposed method can also be extended to work with multi-channel and multi-radio mesh networks under different interference models.