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<p>In a number of LoRaWAN sensor network scenarios, it is required to deliver data with a given reliability and with minimal sensor energy consumption. To improve the reliability of data delivery in a LoRaWAN network, data can be transmitted in two modes: (i) with acknowledgments and retries of undelivered data, or (ii) without acknowledgments and with unconditional retries. In this paper, we develop a model of a LoRaWAN network in which some devices transmit data in the first mode and some in the second mode. The model makes it possible to find the dependence of packet loss probability, sensor energy consumption, and base station duty cycle on the traffic intensity. Based on the modeling results, we propose an algorithm for selecting the fraction of sensors transmitting data with confirmation and the number of repetitions for sensors transmitting data with unconditional repetitions that minimizes energy consumption, fulfills the limit on the duty cycle, and ensures the desired reliability of data transmission.</p>

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Reducing Energy Consumption in LoRaWAN Networks with Duty Cycle Limitation

  • 期刊论文

  • 发表日期：

    2025年4月21日

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  • A. A. Fedorishcheva,
  • D. V. Bankov,
  • A. I. Lyakhov,
  • E. M. Khorov

摘要

In a number of LoRaWAN sensor network scenarios, it is required to deliver data with a given reliability and with minimal sensor energy consumption. To improve the reliability of data delivery in a LoRaWAN network, data can be transmitted in two modes: (i) with acknowledgments and retries of undelivered data, or (ii) without acknowledgments and with unconditional retries. In this paper, we develop a model of a LoRaWAN network in which some devices transmit data in the first mode and some in the second mode. The model makes it possible to find the dependence of packet loss probability, sensor energy consumption, and base station duty cycle on the traffic intensity. Based on the modeling results, we propose an algorithm for selecting the fraction of sensors transmitting data with confirmation and the number of repetitions for sensors transmitting data with unconditional repetitions that minimizes energy consumption, fulfills the limit on the duty cycle, and ensures the desired reliability of data transmission.