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What is a Bluetooth beacon?

August 12, 2021

Latest company news about What is a Bluetooth beacon?

A Bluetooth beacon is a low-power Bluetooth (BLE) broadcasting device. A Bluetooth beacon sends broadcast packets on channels 37, 38, and 39 using its supported General Properties (GATT) profile. A Bluetooth scanner receives the broadcast packets, decodes them, and then takes action.

Further, bluetooth beacons use BLE broadcast structures to embed certain formats and data. Whenever a Bluetooth beacon device broadcasts, the same packet is typically sent on all three broadcast channels, making it more likely that a BLE receiver/scanner will receive it. Once received, the scanner determines whether the contents of the packet are decodable and relevant, and then acts accordingly.

Within a broadcast packet, the data payload is constructed as one or more [length, type, data] three-field forms.

The length field defines the total length of the following type and data fields;
The type field specifies whether the data is a name, a universal Unique identifier (UUID) for a service, a uniform resource identifier (URI), or one of many other defined data types;
Bluetooth beacons can further structure packet data, defining a substructure within the data field to determine different beacon protocols such as Apple's iBeacon or Google's Eddystone.

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