Editing Bluetooth (section)

=== {{Anchor|v4.0}}Bluetooth 4.0 ===
{{main|Bluetooth Low Energy}}

The Bluetooth SIG completed the Bluetooth Core Specification version 4.0 (called Bluetooth Smart) and has been adopted {{as of|2010|June|30|lc=y}}. It includes ''Classic Bluetooth'', ''Bluetooth high speed'' and ''[[Bluetooth Low Energy]]'' (BLE) protocols. Bluetooth high speed is based on Wi-Fi, and Classic Bluetooth consists of legacy Bluetooth protocols.

[[Bluetooth Low Energy]], previously known as Wibree,<ref>{{cite press release |url=http://www.wibree.com/press/Wibree_pressrelease_final_1206.pdf |title=Wibree forum merges with Bluetooth SIG |date=12 June 2007 |publisher=Nokia |access-date=4 February 2008 |archive-url=https://web.archive.org/web/20141229073516/http://www.wibree.com/press/Wibree_pressrelease_final_1206.pdf |archive-date=29 December 2014 |url-status=dead }}</ref> is a subset of Bluetooth v4.0 with an entirely new protocol stack for rapid build-up of simple links. As an alternative to the Bluetooth standard protocols that were introduced in Bluetooth v1.0 to v3.0, it is aimed at very low power applications powered by a [[Button cell|coin cell]]. Chip designs allow for two types of implementation, dual-mode, single-mode and enhanced past versions.<ref>{{cite web |url=http://www.bluetooth.com/Bluetooth/Press/SIG/SIG_INTRODUCES_BLUETOOTH_LOW_ENERGY_WIRELESS_TECHNOLOGY_THE_NEXT_GENERATION_OF_BLUETOOTH_WIRELESS_TE.htm |title=Bluetooth.com |publisher=Bluetooth.com |access-date=4 September 2010 |archive-url=https://web.archive.org/web/20091221175650/http://www.bluetooth.com/Bluetooth/Press/SIG/SIG_INTRODUCES_BLUETOOTH_LOW_ENERGY_WIRELESS_TECHNOLOGY_THE_NEXT_GENERATION_OF_BLUETOOTH_WIRELESS_TE.htm |archive-date=21 December 2009 |url-status=dead }}</ref> The provisional names ''Wibree'' and ''Bluetooth ULP'' (Ultra Low Power) were abandoned and the BLE name was used for a while. In late 2011, new logos "Bluetooth Smart Ready" for hosts and "Bluetooth Smart" for sensors were introduced as the general-public face of BLE.<ref>{{cite web |url=https://www.engadget.com/2011/10/25/bluetooth-sig-unveils-smart-marks-explains-v4-0-compatibility-w/ |title=Bluetooth SIG unveils Smart Marks, explains v4.0 compatibility with unnecessary complexity |date=25 October 2011 |publisher=Engadget |access-date=24 August 2017 |archive-date=30 December 2018 |archive-url=https://web.archive.org/web/20181230095852/https://www.engadget.com/2011/10/25/bluetooth-sig-unveils-smart-marks-explains-v4-0-compatibility-w/ |url-status=live }}</ref>

Compared to ''Classic Bluetooth'', Bluetooth Low Energy is intended to provide considerably reduced power consumption and cost while maintaining a [[#Radio interface|similar communication range]]. In terms of lengthening the battery life of Bluetooth devices, {{abbr|BLE|Bluetooth Low Energy}} represents a significant progression.

* In a single-mode implementation, only the low energy protocol stack is implemented. [[Dialog Semiconductor]],<ref>{{cite web|url=https://www.dialog-semiconductor.com/bluetooth-low-energy|title=Dialog Semiconductor|access-date=1 February 2018|archive-date=23 December 2018|archive-url=https://web.archive.org/web/20181223163430/https://www.dialog-semiconductor.com/bluetooth-low-energy|url-status=live}}</ref> [[STMicroelectronics]],<ref>{{cite web|url=https://www.st.com/en/wireless-connectivity/bluenrg-1.html|title=BlueNRG-1 – Programmable Bluetooth LE 5.2 Wireless SoC |publisher=[[STMicroelectronics]] |access-date=24 March 2022 }}</ref> AMICCOM,<ref>{{cite web|url=http://www.amiccom.com.tw/ |title=:::笙科電子-Amiccom |url-status=dead |archive-url=https://web.archive.org/web/20130825161057/http://www.amiccom.com.tw/ |archive-date=25 August 2013 }}</ref> [[CSR plc|CSR]],<ref>{{cite web |url=http://www.csr.com/products/45/csr-energy |archive-url=https://archive.today/20120628214525/http://www.csr.com/products/45/csr-energy |url-status=dead |archive-date=28 June 2012 |title=CSR.com |publisher=CSR |access-date=7 April 2011 }}</ref> [[Nordic Semiconductor]]<ref>{{cite web |url=http://www.nordicsemi.com/eng/Products/Bluetooth-R-low-energy/nRF8001 |title=Nordicsemi.com |publisher=Nordic Semiconductor |access-date=7 April 2011 |archive-url=https://web.archive.org/web/20110402173736/http://www.nordicsemi.com/eng/Products/Bluetooth-R-low-energy/nRF8001 |archive-date=2 April 2011 |url-status=dead }}</ref> and [[Texas Instruments]]<ref>{{cite web |url=http://focus.ti.com/docs/prod/folders/print/cc2540.html |title=TI.com |publisher=Texas Instruments |access-date=7 April 2011 |archive-date=21 July 2011 |archive-url=https://web.archive.org/web/20110721114918/http://focus.ti.com/docs/prod/folders/print/cc2540.html |url-status=live }}</ref> have released single mode Bluetooth Low Energy solutions.
* In a dual-mode implementation, Bluetooth Smart functionality is integrated into an existing Classic Bluetooth controller. {{As of|2011|03}}, the following semiconductor companies have announced the availability of chips meeting the standard: [[Qualcomm Atheros]], [[CSR plc|CSR]], [[Broadcom]]<ref>{{cite web |url=http://www.ifixit.com/Teardown/MacBook-Air-13-Inch-Mid-2011-Teardown/6130/1 |title=iFixit MacBook Air 13" Mid 2011 Teardown |date=21 July 2011 |publisher=iFixit.com |access-date=27 July 2011 |archive-date=24 July 2011 |archive-url=https://web.archive.org/web/20110724072433/http://www.ifixit.com/Teardown/MacBook-Air-13-Inch-Mid-2011-Teardown/6130/1 |url-status=live }}</ref><ref>{{cite web |url=http://www.broadcom.com/products/Bluetooth/Bluetooth-RF-Silicon-and-Software-Solutions/BCM20702 |title=Broadcom.com&nbsp;– BCM20702&nbsp;– Single-Chip Bluetooth 4.0 HCI Solution with Bluetooth Low Energy (BLE) Support |publisher=Broadcom |access-date=27 July 2011 |archive-url=https://web.archive.org/web/20110811125845/http://www.broadcom.com/products/Bluetooth/Bluetooth-RF-Silicon-and-Software-Solutions/BCM20702 |archive-date=11 August 2011 |url-status=dead }}</ref> and [[Texas Instruments]]. The compliant architecture shares all of Classic Bluetooth's existing radio and functionality resulting in a negligible cost increase compared to Classic Bluetooth.

Cost-reduced single-mode chips, which enable highly integrated and compact devices, feature a lightweight Link Layer providing ultra-low power idle mode operation, simple device discovery, and reliable point-to-multipoint data transfer with advanced power-save and secure encrypted connections at the lowest possible cost.

General improvements in version 4.0 include the changes necessary to facilitate BLE modes, as well the Generic Attribute Profile (GATT) and Security Manager (SM) services with [[Advanced Encryption Standard|AES]] Encryption.

Core Specification Addendum 2 was unveiled in December 2011; it contains improvements to the audio Host Controller Interface and to the High Speed (802.11) Protocol Adaptation Layer.

Core Specification Addendum 3 revision 2 has an adoption date of 24 July 2012.

Core Specification Addendum 4 has an adoption date of 12 February 2013.