Glossary

Bluetooth

A wireless technology standard for exchanging data over short distances.

Bluetooth Classic

The original version of Bluetooth, which is used for audio streaming and file transfer. Also known as Bluetooth Basic Rate/Enhanced Data Rate (BR/EDR).

BLE

Bluetooth Low Energy, a version of Bluetooth that is optimized for low power consumption.

ISM

Industrial, scientific, and medical frequency band. An unlicensed but regulated frequency band used for industrial, scientific, and medical devices, spanning from 2.4GHz to 2.5GHz.

FHSS

Frequency Hopping Spread Spectrum, a method of transmitting radio signals by rapidly switching a carrier among many frequency channels.

Host

The host consists of the higher layers in the BLE stack. Its responsible includes: the Generic Attribute Profile (GATT), the Generic Access Profile (GAP), the Security Manager Protocol (SMP), and the Logical Link Control and Adaptation Protocol (L2CAP). Details

Controller

The controller consists of the lower layers in the BLE stack. Its responsible includes: the Physical Layer (PHY), the Link Layer (LL), and the Isochronous Adaptation Layer (ISOAL). Details

HCI

Host Controller Interface, a logical interface that defines a way in which the Host and Controller components may communicate. Details