Optimal Placement of Multiple Interconnected Gateways in Heterogeneous Wireless Sensor Networks

  • Antonio Capone
  • Matteo Cesana
  • Danilo De Donno
  • Ilario Filippini
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5550)


Data collected by sensors often have to be remotely delivered through multi-hop wireless paths to data sinks connected to application servers for information processing. The position of these sinks has a huge impact on the quality of the specific Wireless Sensor Network (WSN). Indeed, it may create artificial traffic bottlenecks which affect the energy efficiency and the WSN lifetime. This paper considers a heterogeneous network scenario where wireless sensors deliver data to intermediate gateways geared with a diverse wireless technology and interconnected together and to the sink. An optimization framework based on Integer Linear Programming (ILP) is developed to locate wireless gateways minimizing the overall installation cost and the energy consumption in the WSN, while accounting for multi-hop coverage between sensors and gateways, and connectivity among wireless gateways. The proposed ILP formulations are solved to optimality for medium-size instances to analyze the quality of the designed networks, and heuristic algorithms are also proposed to tackle large-scale heterogeneous scenarios.


Wireless Sensor Networks Gateway Placement  Optimization 


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Copyright information

© IFIP International Federation for Information Processing 2009

Authors and Affiliations

  • Antonio Capone
    • 1
  • Matteo Cesana
    • 1
  • Danilo De Donno
    • 1
  • Ilario Filippini
    • 1
  1. 1.Dipartimento di Elettronica e InformazionePolitecnico di MilanoMilanItaly

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