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Energy-efficient forwarding strategies for Wireless Sensor Networks in fading channels

Abstract : In the context of geographic routing in wireless sensor networks linked by fading communication channels, energy efficient transmission is important to extend the network lifetime. To this end, we propose a novel method to minimize the energy consumed by one bit of information per meter and per second towards the destination in fading channels. Using the outage probability as a measure to maximize the amount of information delivered within a given time interval we decide energy efficient geographic routing between admissible nodes in a wireless sensor network. We present three different approaches, the first is optimal and is obtained by varying both transmission rate and power, the other two are sub-optimal since only one of them is tuned. Simulation examples comparing the energy costs for the different strategies illustrate the theoretical analysis in the cases of log-normal and Nakagami shadow fading. With the method proposed it is possible to obtain a significant energy savings (up to ten times) with respect to fixed transmission rate and power.
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https://hal.archives-ouvertes.fr/hal-02981052
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Submitted on : Tuesday, October 27, 2020 - 6:01:35 PM
Last modification on : Tuesday, December 1, 2020 - 11:02:32 AM
Long-term archiving on: : Thursday, January 28, 2021 - 7:35:10 PM

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Ruben Milocco, Paul Muhlethaler, Selma Boumerdassi. Energy-efficient forwarding strategies for Wireless Sensor Networks in fading channels. Annals of Telecommunications - annales des télécommunications, Springer, 2020, ⟨10.1007/s12243-020-00815-x⟩. ⟨hal-02981052⟩

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