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Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
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An Adaptive Spreading Factor Selection Scheme for a Single Channel LoRa Modem.

Seungku Kim1, Heonkook Lee2, Sungho Jeon1

  • 1School of Electronics Engineering, Chungbuk National University, Cheongju 28644, Korea.

Sensors (Basel, Switzerland)
|February 20, 2020
PubMed
Summary
This summary is machine-generated.

This study introduces an adaptive spreading factor selection (ASFS) scheme for LoRaWAN networks. The ASFS scheme significantly enhances throughput and reduces network costs in multi-hop internet of things (IoT) applications.

Keywords:
LPWANLoRaLoRaWANmulti-hopspreading factor

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Area of Science:

  • Wireless Communication Technologies
  • Internet of Things (IoT)
  • Network Performance Optimization

Background:

  • Low Power Wide Area Networks (LPWAN) are crucial for IoT, with LoRa offering low-power, long-range communication.
  • Existing LoRaWAN star topologies are not scalable and have limitations in data rate flexibility.
  • Optimizing data rates in LoRaWAN is essential for improving network efficiency and cost-effectiveness.

Purpose of the Study:

  • To propose an adaptive spreading factor selection (ASFS) scheme for LoRaWAN.
  • To enable independent data rate communication for each link in a multi-hop network.
  • To maximize throughput and minimize network costs using single-channel LoRa modules.

Main Methods:

  • Developed an adaptive spreading factor selection (ASFS) scheme.
  • Implemented iterative spreading factor (SF) inspection and an SF selection algorithm.
  • Built and evaluated a multi-hop LoRa network across various topologies.

Main Results:

  • The ASFS scheme achieved significantly higher end-to-end throughput compared to standalone modems.
  • Experimental results demonstrated up to three times performance improvement.
  • The scheme allows each link to operate at independent data rates, optimizing communication.

Conclusions:

  • The proposed ASFS scheme is effective for enhancing LoRaWAN performance.
  • It offers a scalable and cost-efficient solution for multi-hop IoT networks.
  • ASFS is a promising technology for applications demanding high throughput in multi-hop environments.