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This is in the globally unlicensed (but not unregulated) industrial, scientific and medical 2.4 GHz short-range radio frequency band. Bluetooth uses a radio technology called frequency-hopping spread spectrum. Bluetooth divides transmitted data into packets, and transmits each packet on one of 79 designated Bluetooth channels.
For example, Bluetooth MAP is used by HP Send and receive text (SMS) messages from a Palm/HP smartphone to an HP TouchPad tablet. [23] Bluetooth MAP is used by Ford in select SYNC Generation 1-equipped 2011 and 2012 vehicles [24] and also by BMW with many of their iDrive systems. The Lexus LX and GS 2013 models both also support MAP as does the ...
Bluetooth devices intended for use in short-range personal area networks operate from 2.4 to 2.4835 GHz. To reduce interference with other protocols that use the 2.45 GHz band, the Bluetooth protocol divides the band into 80 channels (numbered from 0 to 79, each 1 MHz wide) and changes channels up to 1600 times per second.
Samsung Galaxy S II X (SGH-T989D), Galaxy S II LTE, Galaxy S Blaze 4G, Galaxy Tab 7.7 LTE; MSM8260 [1] Q3 2010 1.2 GHz Asus Eee Pad Memo • HTC Evo 3D, Sensation • Huawei MediaPad (S7-301/302u) • LG Optimus LTE Tag; Samsung Galaxy Exhilarate (SGH-i577) • T-Mobile myTouch 4G Slide, SpringBoard • ZTE V71A, V9S [29] 1.5 GHz
Pixel Tablet: 2023 June All models [13] Huawei: Mate XT: 2024 September Harmony OS Motorola: Edge 50: 2024 April Ultra model only [14] Google's Find My Device: NIO: NIO Phone 2 2024 July SkyOS 2 Nio's vehicle operating system Qorvo UWB SoC Samsung: Galaxy Note20: 2020 August Note 5G and Ultra model only [15] Samsung Find, Google's Find My ...
LE-ACL employs a spread spectrum scheme known as adaptive frequency hopping. At the start of each connection event, frequency hopping occurs, with one of the 37 general purpose Bluetooth LE radio channels being selected from the set of available channels using a channel selection algorithm. Each device in the connection will then switch to the ...
The Bluetooth protocol RFCOMM is a simple set of transport protocols, made on top of the L2CAP protocol, providing emulated RS-232 serial ports (up to sixty simultaneous connections to a Bluetooth device at a time). The protocol is based on the ETSI standard TS 07.10.
The 802.11 standard provides several radio frequency bands for use in Wi-Fi communications, each divided into a multitude of channels numbered at 5 MHz spacing (except in the 45/60 GHz band, where they are 0.54/1.08/2.16 GHz apart) between the centre frequency of the channel.