Group 1: History and Development of Bluetooth
– Initiated in 1989 by Nils Rydbeck at Ericsson Mobile
– Development began in 1994, with a workable solution by 1997
– Collaboration between IBM and Ericsson led to Bluetooth’s standardization
– Bluetooth SIG launched in May 1998 with five founding members
– First Bluetooth device revealed in 1999, with commercial products in 2001
Group 2: Technical Specifications and Features
– Bluetooth operates at frequencies between 2.402 and 2.480GHz
– Transmission power limited to 2.5 milliwatts
– Short range of up to 10 meters (33ft)
– Bluetooth is licensed to individual qualifying devices
– Over 4.7 billion Bluetooth integrated circuit chips shipped annually (2021)
Group 3: Bluetooth Versions and Enhancements
– Bluetooth 1.0 and 1.0B issues with interoperability and security
– Bluetooth 1.1 introduced non-encrypted channels and RSSI
– Bluetooth 1.2 brought faster connection and AFH
– Bluetooth 2.0 + EDR introduced EDR for faster data transfer
– Bluetooth 2.1 + EDR featured secure simple pairing and reduced power consumption
Group 4: Bluetooth Low Energy (BLE)
– BLE subset of Bluetooth v4.0 for low power applications
– BLE offers reduced power consumption and cost
– BLE enables significantly longer battery life for devices
– BLE 4.2 introduced Low Energy Secure Connection and Link Layer Privacy
– BLE 5.2 includes LE Audio for lower battery consumption and new LC3 codec
Group 5: Applications and Uses of Bluetooth
– Wireless control between mobile phones and handsfree headsets
– Bluetooth connectivity for devices like phones, tablets, and speakers
– Applications include wireless streaming of audio, data, and networking between devices
– Bluetooth used in products like telephones, speakers, tablets, and laptops
– Bluetooth enables communication between various devices
Bluetooth is a short-range wireless technology standard that is used for exchanging data between fixed and mobile devices over short distances and building personal area networks (PANs). In the most widely used mode, transmission power is limited to 2.5 milliwatts, giving it a very short range of up to 10 metres (33 ft). It employs UHF radio waves in the ISM bands, from 2.402 GHz to 2.48 GHz. It is mainly used as an alternative to wired connections to exchange files between nearby portable devices and connect cell phones and music players with wireless headphones.
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| Developed by | Bluetooth Special Interest Group |
|---|---|
| Introduced | 7 May 1998 |
| Industry | Personal area networks |
| Compatible hardware | |
| Physical range | Typically less than 10 m (33 ft), up to 100 m (330 ft). Bluetooth 5.0: 40–400 m (100–1,000 ft) |
| Website | www |
Bluetooth is managed by the Bluetooth Special Interest Group (SIG), which has more than 35,000 member companies in the areas of telecommunication, computing, networking, and consumer electronics. The IEEE standardized Bluetooth as IEEE 802.15.1 but no longer maintains the standard. The Bluetooth SIG oversees the development of the specification, manages the qualification program, and protects the trademarks. A manufacturer must meet Bluetooth SIG standards to market it as a Bluetooth device. A network of patents applies to the technology, which is licensed to individual qualifying devices. As of 2021[update], 4.7 billion Bluetooth integrated circuit chips are shipped annually.
Finnish
Etymology
Unadapted borrowing from English Bluetooth, calqued from Old Norse Blátǫnn.
