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Linux Foundation

Location Services and Direction Finding with Bluetooth

Linux Foundation via YouTube

Overview

Explore the groundbreaking advancements in Bluetooth technology for location services and direction finding in this 35-minute conference talk by Martin Woolley from Bluetooth SIG. Delve into the new capabilities introduced in 2019, enabling precise direction calculation of Bluetooth signals using Angle of Arrival (AoA) or Angle of Departure (AoD) methods. Discover how these innovations enhance proximity applications, Point of Interest systems, and key finders with centimeter-level accuracy. Gain insights into the physics of radio waves and the intricacies of the Bluetooth protocol stack. Learn about Real Time Locating Systems (RTLS) and Way Finding applications that leverage this technology for unprecedented precision. Understand the limitations, trade-offs, and practical implementations of these features, including IQ sampling, frequency hopping, and Constant Tone Extension (CTE). Explore real-world examples and discover resources for further learning in this comprehensive overview of Bluetooth's latest location and direction-finding capabilities.

Syllabus

Introduction
Location Services
Bluetooth Profiles
Limitations
Direction Finding
Direction
Direction Discovery
Bluetooth 51
Accuracy
The Trade
Physics
Phase
Fixed wavelength
Test
Trigonometry
IQ Sampling
Visualisation
Frequency Hopping
CTE
Bluetooth Stack
Example
Where to go next
What can you do
Other resources
Conclusion

Taught by

Linux Foundation

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