Energy performance of LR-FHSS: analysis and evaluation

arXiv - CS - Networking and Internet Architecture Pub Date : 2024-08-09 DOI:arxiv-2408.04908

Roger Sanchez-Vital, Lluís Casals, Bartomeu Heer-Salva, Rafael Vidal, Carles Gomez, Eduard Garcia-Villegas

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Abstract

Long Range-Frequency Hopping Spread Spectrum (LR-FHSS) is a pivotal advancement in the LoRaWAN protocol, designed to enhance the network's capacity and robustness, particularly in densely populated environments. Although energy consumption is paramount in LoRaWAN-based end-devices, there are currently no studies in the literature, to our knowledge, that model the impact of this novel mechanism on energy consumption. In this article, we provide a comprehensive energy consumption analytical model of LR-FHSS, focusing on three critical metrics: average current consumption, battery lifetime, and energy efficiency of data transmission. The model is based on measurements performed on real hardware in a fully operational LR-FHSS network. While in our evaluation, LR-FHSS can show worse consumption figures than LoRa, we found that with optimal configuration, the battery lifetime of LR-FHSS end-devices can reach 2.5 years for a 50-minute notification period. For the most energy-efficient payload size, this lifespan can be extended to a theoretical maximum of up to 16 years with a one-day notification interval using a cell-coin battery.

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LR-FHSS 的能源性能：分析与评估

长距离跳频扩频（LR-FHSS）是 LoRaWAN 协议中的一项重要改进，旨在增强网络的容量和鲁棒性，尤其是在人口稠密的环境中。虽然能耗在基于 LoRaWAN 的终端设备中至关重要，但据我们所知，目前还没有文献研究模拟这种新颖机制对能耗的影响。在本文中，我们提供了 LR-FHSS 的综合能耗分析模型，重点关注三个关键指标：平均电流消耗、电池寿命和数据传输能效。该模型基于在全面运行的 LR-FHSS 网络中对真实硬件进行的测量。虽然在我们的评估中，LR-FHSS 的消耗数据可能比 LoRa 差，但我们发现，在最佳配置下，LR-FHSS 终端设备的电池寿命在 50 分钟通知周期内可达到 2.5 年。对于能效最高的有效载荷大小，使用acell-coin电池，在一天的通知间隔内，这一寿命可延长到理论上的最长 16 年。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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arXiv - CS - Networking and Internet Architecture

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