Cross layer optimization for efficient data aggregation in multi-hop wireless sensor networks

  • Authors:
  • D. Molteni;S. Savazzi;U. Spagnolini

  • Affiliations:
  • DEI Politecnico di Milano, Milano, Italy;DEI Politecnico di Milano, Milano, Italy;DEI Politecnico di Milano, Milano, Italy

  • Venue:
  • Proceedings of the 6th International Wireless Communications and Mobile Computing Conference
  • Year:
  • 2010

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Abstract

Wireless Sensor Networks (WSN) is the most promising technological paradigm to support the next generation highly efficient emergency management systems. Optimal design of WSN involves all the layers of the protocol stack: from the physical (PHY), the medium access layer (MAC) to the application layer. The design problem is conveniently cast in this paper for linear sensor network topologies where the terminals are equidistantly placed on the line between the source and the destination and are monitoring a correlated field. This simple topology can be adopted to provide insights to the performance of multihop networks used in several applications as monitoring systems, acoustic sensor arrays, seismic systems etc... The paper provides an analytical tool for performance analysis that takes into account both the statistical properties of the monitored field (spatial and temporal correlation), the PHY layer transceiver design (RF power allocation and modulation) and the medium access (duty cycle, routing).