Adaptive energy-efficient registration and online scheduling for asymmetric wireless sensor networks

  • Authors:
  • Saravanan Balasubramanian;Demet Aksoy

  • Affiliations:
  • Cisco Systems, San Jose, CA 95134, United States;Computer Science Department, University of California, Davis, CA 95616, United States

  • Venue:
  • Computer Networks: The International Journal of Computer and Telecommunications Networking
  • Year:
  • 2007

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Abstract

Increasing onboard processing capabilities of sensors enable self-organization in wireless sensor networks to dynamically adapt to ad hoc topologies and to react to task or network changes. Such self-organization, however. comes at a cost of additional energy consumption for the sensor nodes with already limited power resources. As energy limitations in unattended environments raise a major concern, such organizations need to trade-off between power consumption and topology maintenance. In this paper we present our adaptive energy-efficient registration and online scheduling (AEROS) protocol that exploits application based data flow characteristics to reduce power consumption during self-organization. Asymmetric data flow characteristics is used to govern route selection, and to formulate an organized transmission schedule with risk-free sleeping time. Our simulation results suggest that AEROS's transmission schedule allows the minimum number of data message exchanges and guarantees a collision-free communication. AEROS provides significant energy savings in steady state using a low number of control messages.