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Range and Capacity of LoRa 2.4 GHz

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Reyhane Falanji
  • Function : Author
Martin Heusse
Andrzej Duda

Abstract

LoRa 2.4 GHz is a new variant of LoRa networks that uses the 2.4 GHz ISM band, different from the standard 868 MHz LoRa version. The LoRa physical layer takes advantage of a Chirp Spreading Spectrum (CSS) modulation with robust signals for transmission over long distances. While the standard LoRa in the 868 MHz band covers a range of 5-10 km, the actual capacity and range of LoRa 2.4 GHz are still not yet fully investigated. A shorter range is expected with the higher carrier frequency and an increased bandwidth. However, the wider bandwidth allows for the transmission of larger frames and a shorter airtime. In this study, we evaluate the coverage range and capacity of LoRa 2.4 GHz through precise simulations, taking into account a path loss model tailored for urban environments and frequencies over 2 GHz. We also take into account the effect of Rician or Rayleigh fading, as well as collisions in low and high load traffic conditions. The results show a maximum range of 1.1 km and capacity around 310 nodes for low traffic and the case in which each node in the network benefits from a minimum 60% Packet Delivery Ratio (PDR). This range drops to 700 m when the target PDR increases to 90%, accommodating 120 nodes. Under the assumption of Rayleigh fading and for the target PDR of 60 % and heavy load, the range attains 350 m with capacity of 30 nodes, and it drops to 120 m for the 90% target PDR.
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Dates and versions

hal-03868942 , version 1 (24-11-2022)

Identifiers

  • HAL Id : hal-03868942 , version 1

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Reyhane Falanji, Martin Heusse, Andrzej Duda. Range and Capacity of LoRa 2.4 GHz. EAI Mobiquitous 2022, Nov 2022, Pittsburgh, United States. ⟨hal-03868942⟩
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