A hybrid nature-inspired optimizer for wireless mesh networks design

  • Authors:
  • D. Benyamina;A. Hafid;N. Hallam;M. Gendreau;J. C. Maureira

  • Affiliations:
  • NRL, University of Montreal, Canada;NRL, University of Montreal, Canada;CS&IT Depart., University of Bahrain, Bahrain;CIRRELT, University of Montreal, Canada;INRIA, Sophia Antipolis, France

  • Venue:
  • Computer Communications
  • Year:
  • 2012

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Abstract

Existing approaches for optimal planning of wireless mesh networks (WMNs) deployment revolves around the deployment cost as the pivotal concept to optimize. In this paper, we adopt a new approach to optimize the planning of WMNs that guarantees an acceptable level of network performance prior to its deployment. It is a simultaneous optimization process of network deployment cost and network throughput objectives while taking into account all the parameters that have a significant impact on the network efficiency. We propose three multi-objective models for WMN planning problem, namely Load-Balanced Model, Interference Model, and Flow-Capacity Model. We devise an evolutionary swarm-based algorithm that is a hybrid combination of multi-objective Particle Swarm Optimization (MOPSO) and Genetic Algorithms (GAs) to solve the three models. We use realistic network sizes (up to 100 mesh nodes) to perform a thorough comparative experimental study on these three instance models with different key-parameter settings. Finally, we use the network simulator OMNET++ to evaluate the three models in terms of the actual performance (network throughput). The results presented in this paper show that Load-Balanced Model totally supersedes the Flow-Capacity Model and performs better than the Interference Model.