Sustainable Traffic Aware Duty-Cycle Adaptation in Harvested Multi-Hop Wireless Sensor Networks

Abstract

International audienceSustainable power management techniques in energy harvesting wireless sensors currently adapt the consumption of sensors to their harvesting rate within the limits of their battery residual energy, but regardless of the traffic profile. To provide a fairer distribution of the energy according to application needs, we propose a new sustainable traffic aware duty-cycle adaptation scheme (STADA) that takes into account the traffic load in addition to previous factors. We evaluate our protocol in the specific context of multi-hop IEEE 802.15.4 beacon-enabled wireless sensor networks powered by solar energy. Simulations show that our solution outperforms traffic-unaware adaptation schemes while minimizing the variance of the quality of service provided to applications

Energy Harvesting Wireless Sensor Networks: From Characterization to Duty Cycle Dimensioning

“…As the amount of available energy is highly variable depending on the harvesting opportunities, adaptive duty cycle solutions appear to be a viable solution. The adaptive approaches proposed in the literature are generally based on the harvested energy rate (using historic [9] or forecast [10] models), the battery level [3], [11], [12], or a combination of both [11]. Using predictions of energy availability can be an efficient solution in outdoor homogeneous environments, where the solar energy follows daily and yearly periodicities [10].…”