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Finally, some laptops and smartphones require both LE modes and BR/EDR modes, and this capability is offered by so-called "dual-mode" Bluetooth solutions. Sensors, "smart" lightbulbs and other "smart home" devices are the ideal use-case for Bluetooth LE. Bluetooth LE is designed for short bursts of small data packets over a longer range in order to conserve battery life. The former establishes short-range connections for continuous data transfer (think headsets streaming music from a smartphone). Texas Instruments CC2560/64 Bluetooth evaluation moduleĬurrent implementations of Bluetooth come in two flavors: Bluetooth Basic Rate/Enhanced Data Rate (BR/EDR) and Bluetooth low energy (LE), also called Bluetooth Smart. Even the low-power Class 2 and Class 3 devices are capable of greater than 10-meter range with the new networking and modulation schemes introduced by the Bluetooth standard in March 2016. Where Wi-Fi enables wireless local area networks (WLANs) and ties together devices around some venue, Bluetooth enables wireless personal area networks (PANs) to enable communication in a 10-meter range (for Class 2 and Class 3 Bluetooth devices) and more than 100-meter range for Class 1 devices, mostly used for industrial applications. It could be considered a short-range sibling of Wi-Fi. In a nutshell, Bluetooth is a wireless communication specification operating on the unlicensed 2.4GHz band.
This article is an in-depth look at everything Bluetooth: the science, the tech, the security and the standard. Bluetooth is fascinating, though-not just for its technical operation, but for the multi-national conglomerate of corporations standing behind it, and the work they do behind the scenes to makes sure Bluetooth is the standard.
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