Applications for Bluetooth Location Services
Smart Retail
Smart Healthcare
Smart Warehouses
Smart Buildings
Silicon Labs Bluetooth Direction Finding Solution
- Bluetooth stack with Direction Finding
- EFR32BG24 SoCs
- EFR32BG22 SoCs and SiP Module
- Antenna reference designs and radio boards
Understanding Angle of Arrival and Angle of Departure
Angle of Arrival (AoA)
- Assets broadcast (TX) their location to an AoA locator such as a wireless access point (AP), connected light or smart luminaire
- Locators measure the signal's arrival angle
Angle of Departure (AoD)
- Beacons transmit AoD information such as coordinates using multiple antennas
- Mobile devices receive the beacons and calculates position
Angle of Arrival Design Considerations
- Assets only need a single antenna, can be low power, and simultaneously support additional Bluetooth LE functionality
- Locators require antenna arrays
- Edge gateways process angle readings and communicate to an asset management system in the cloud to determine device location
Angle of Departure Design Considerations
- Beacons require 4 x 4 antenna arrays
- Mobile devices need to support AoD algorithms
- Beacon coordinates must be known by the location services system
Bluetooth Angle Estimation for Real-Time Locationing
Learn the basics of angle of arrival and angle of departure and the theory for estimating direction of arrival in this whitepaper.