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Bluetooth Low Energy Interference Awareness Scheme and Improved Channel Selection Algorithm for Connection

Bozheng Pang1, Kristof T'Jonck1, Tim Claeys2

  • 1M-Group, DistriNet, Department of Computer Science, KU Leuven Bruges Campus, 8200 Bruges, Belgium.

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Summary
This summary is machine-generated.

This study introduces two data link layer improvements for Bluetooth Low Energy (BLE) to detect and avoid radio interference, significantly enhancing device connection robustness and reliability in challenging environments.

Keywords:
Bluetooth Low Energy (BLE)channel selection algorithminterferencelink layerreliabilityrobustness

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Area of Science:

  • Electrical Engineering
  • Computer Science

Background:

  • Bluetooth Low Energy (BLE) is crucial for Internet of Things (IoT) devices.
  • Radio interference degrades BLE performance and causes channel congestion.
  • Robustness and interference avoidance are critical requirements for wireless communication.

Purpose of the Study:

  • To propose and validate two data link layer improvements for BLE.
  • To enhance BLE connection robustness against radio interference.
  • To provide insights into interference detection and channel selection mechanisms.

Main Methods:

  • Development of two data link layer improvements for interference detection and channel selection.
  • Extensive experimental evaluations of the proposed methods.
  • Assessment of BLE link layer performance metrics: channel usage distribution, supervision timeout ratio (STR), and packet loss rate (PLR).

Main Results:

  • Achieved reliability exceeding 97% and 99% in harsh interference environments.
  • Demonstrated significant enhancement of BLE robustness through the proposed improvements.
  • Validated the effectiveness of the link layer in managing interference and scheduling.

Conclusions:

  • The proposed data link layer solutions effectively mitigate interference issues in BLE.
  • The implemented mechanisms enhance BLE connection reliability and performance.
  • This work offers practical solutions for BLE devices operating in interference-prone environments.