How Bluetooth technology works

Let us go back to the invention of Bluetooth technology. Firstly this technology was developed by Ericsson in Sweden in the year 1994. With the aim to establish a technology for transferring data at a short range without any cables or wire. Though by that time Infra-red technology had existed but required line-of-sight interaction to transmit data from one device to another. They were willing to develop such a technology which would enable devices to communicate with each other even through walls and non metallic materials. This thought gave birth to this high reaching technology.

Bluetooth technology is a low power, inexpensive, short range and secure data transmitting technology which enables the device to connect with other devices within a specific proximity of each other. Once the Bluetooth technology was developed others found it to be very useful to use. To develop the Bluetooth Specification (IEEE 802.15) the Bluetooth Special Interest Group (SIG) was formed in the year 1998. The task of this specification was to standardize the development of the Bluetooth technology which will enable all the Bluetooth enabled devices manufactured by different companies to function collectively.

Nowadays there are myriads of Bluetooth technology enabled devices available in and around us ranging from mobile phones, computer hardware, and medical devices to home entertainment gadgets. The main point of interest in this technology is it’s a low power consumption, low cost and robust technology. When one Bluetooth enable device gets connect with another Bluetooth enable device this process is known as pairing. The Bluetooth Specification has made the Bluetooth technology globally accepted. That means any Bluetooth enable device can connect with almost all other Bluetooth enable devices in a specific immediacy. When the devices connect with each other they form a local network which is known a piconet. All the devices within a piconet communicate with each other simultaneously. Even each device within one piconet can communicate with seven other devices at the same time. Which enable the devices within a piconet to remain connected with other devices of several piconets simultaneously as well.  That means there are limitless ways to connect your Bluetooth enabled device with other devices. The basic strength of Bluetooth technology is its ability to handle data and voice transmissions simultaneously providing users with a variety of modern solutions like hands-free headsets for voice calls, printing and fax capabilities, and synchronization for PCs and mobile phones etc.

Bluetooth frequencies

Bluetooth technology operates on a frequency between 2.4 to 2.485 GHz, using a spread spectrum, frequency hopping, full-duplex signal at a nominal rate of 1600 hops/sec. The 2.4 GHz ISM band is unlicensed and available in most the countries. Its Adaptive Frequency Hopping (AFH) ability was planned to diminish interference between wireless technologies sharing the 2.4 GHz spectrum. This hopping technology provides greater performance for the users even when other technologies are being used alongside Bluetooth technology.

The range of the Bluetooth technology starts from a minimum 10m to a range which manufacturers can alter according to their requirement to serve their purpose. The power consumption is very low in Bluetooth technology. It doesn’t not consume any power when inactive.

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