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Area of Science:

  • Electrical Engineering
  • Computer Science
  • Environmental Science

Background:

  • Sub-GHz frequency bands are promising for low-power sensor networks due to robustness and minimal power consumption.
  • Deploying sensor networks over larger areas introduces challenges impacting link quality.
  • Real-world performance data is crucial for understanding and mitigating these deployment challenges.

Purpose of the Study:

  • To demonstrate and analyze the performance of wireless links in a real-world sensor network.
  • To investigate the impact of environmental factors on signal quality in (sub)urban sensor networks.
  • To provide insights into the severity of link performance variations for designing reliable sensor networks.

Main Methods:

  • Deployment of a research-oriented sensor network in a (sub)urban environment.
  • Monitoring and analysis of various link characteristics, including received power levels.
  • Correlation of signal performance with seasonal weather changes and specific environmental events.

Main Results:

  • Observed frequent signal deterioration and occasional signal strength enhancement across long-distance wireless links.
  • Established a connection between received power levels and seasonal weather patterns.
  • Identified irregular link performance as a significant disruption for extended-range, low-power sensor networks.

Conclusions:

  • Environmental factors, particularly seasonal weather, significantly impact sub-GHz sensor network link quality.
  • The variability in signal performance poses a challenge for achieving reliable, long-range sensor network deployments.
  • Understanding these performance disruptions is essential for developing robust and dependable sensor network designs.