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History of Bluetooth

Bluetooth is a wireless technology standard for exchanging data over short distances (using short-wavelength UHF radio waves in the ISM band from 2.4 to 2.485 GHz) from fixed and mobile devices, and building personal area networks (PANs).

Source: Wikipedia

Interesting story

Bluetooth was developed by Ericcson which is a Danish company. They named it after a Danish king, whose nickname was Bluetooth because he brought the Danish tribes together.

That’s sort of misleading, because it’s not entirely truthful. Bluetooth was developed by Ericsson (pre-Sony Ericsson) which is a major Swedish telecommunication company. They named if after the Danish Viking king, Harald Blåtand. Harald Blåtand was the king who converted from the belief in the Ancient Norse Gods and Goddesses to the single God of Christianity. Blåtand translated to English, literally means Bluetooth, so that’s how they came up with the name.

If you look at the Bluetooth symbol, there’s a Runic inscription in it. The two lines sticking out of the back of the B actually represent a Runic H. The B is, obviously, a Runic B. Harald Blåtand’s initials form the symbol of today’s world’s Bluetooth!

Bluetooth is supervised by the Bluetooth Special Interest Group (SIG), which includes more than 25,000 member companies in the regions of telecommunication, computing, network, and gadgets.The IEEE standardized Bluetooth as IEEE 802.15.1, but no sustains the typical a bit longer. The Bluetooth SIG oversees development of the specification, manages the qualification program, and protects the trademarks. A company must meet Bluetooth SIG benchmarks to advertise it as a Bluetooth device. A network of patents connect with the technology, that are certified to specific qualifying devices.

The Bluetooth Core Specification Working Group (CSWG) produces mainly Four kinds of specifications:
The Bluetooth Core Specification, release cycle is typically a few years in between
Core Specification Addendum (CSA), release cycle can be as tight as a few times per year
Core Specification Supplements (CSS), can be released very quickly
Errata

Bluetooth and WiFi

Bluetooth and Wi-Fi (the brand for products using IEEE 802.11 benchmarks) involve some similar applications: establishing systems, printing, or moving files. Wi-Fi is supposed as an alternative for broadband cabling for standard geographic area network gain access to in work areas or home. This group of applications may also be called wireless geographic area sites (WLAN). Bluetooth was designed for lightweight equipment and its own applications. The group of applications is specified as the cellular personal area network (WPAN). Bluetooth is an upgraded for cabling in a number of transported applications in virtually any setting up in person, and also works for set location applications such as smart energy features in the house (thermostats, etc.).

Wi-Fi and Bluetooth are somewhat complementary in their applications and use. Wi-Fi is access point-centered usually, with an asymmetrical client-server reference to all traffic routed through the access point, while Bluetooth is symmetrical usually, between two Bluetooth devices. Bluetooth acts well in simple applications where two devices need to hook up with minimal construction just like a button press, as with headsets and remote control controls, while Wi-Fi suits better in applications where some extent of customer construction is high and possible rates of speed will be required, specifically for network gain access to via and gain access to node. However, Bluetooth access points do exist and ad-hoc connections are possible with Wi-Fi though much less simply much like Bluetooth. Wi-Fi Direct was just lately developed to include a far more Bluetooth-like ad-hoc features to Wi-Fi.

Bluetooth Versions:
Bluetooth v1.0 and v1.0B
Bluetooth v2.1 + EDR
Bluetooth v3.0 + HS
Bluetooth v4.0
Bluetooth v4.1
Bluetooth v4.2
Bluetooth v5

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