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A Game Theory Based Strategy for Reducing Energy Consumption in Cognitive WSN

Author

Listed:
  • Elena Romero
  • Javier Blesa
  • Alvaro Araujo
  • Octavio Nieto-Taladriz

Abstract

Wireless sensor networks (WSNs) are one of the most important users of wireless communication technologies in the coming years and some challenges in this area must be addressed for their complete development. Energy consumption and spectrum availability are two of the most severe constraints of WSNs due to their intrinsic nature. The introduction of cognitive capabilities into these networks has arisen to face the issue of spectrum scarcity but could be used to face energy challenges too due to their new range of communication possibilities. In this paper a new strategy based on game theory for cognitive WSNs is discussed. The presented strategy improves energy consumption by taking advantage of the new change-communication-channel capability. Based on game theory, the strategy decides when to change the transmission channel depending on the behavior of the rest of the network nodes. The strategy presented is lightweight but still has higher energy saving rates as compared to noncognitive networks and even to other strategies based on scheduled spectrum sensing. Simulations are presented for several scenarios that demonstrate energy saving rates of around 65% as compared to WSNs without cognitive techniques.

Suggested Citation

  • Elena Romero & Javier Blesa & Alvaro Araujo & Octavio Nieto-Taladriz, 2014. "A Game Theory Based Strategy for Reducing Energy Consumption in Cognitive WSN," International Journal of Distributed Sensor Networks, , vol. 10(1), pages 965495-9654, January.
    • Handle: RePEc:sae:intdis:v:10:y:2014:i:1:p:965495
    DOI: 10.1155/2014/965495
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