Bluetooth Low Energy Beacon

Bluetooth Technical Operations

Bluetooth could be a high speed, low battery-powered wireless link technology that's designed to onnect phones or other portable equipment together with little to no work required by the user. Unlike infrared, Bluetooth doesn't require line of site positioning to work. Current prototype circuits are pontained on a board that is 0.9 cm sq., with a way smaller circuit board being developed.

When one Bluetooth device comes in contact with another, they will automatically exchange dresses and details of capability. Then, they can establish a one MB link with security that they'll use as required. The protocols involved with handle both data and voice, with a very flexible topography.

The technology achieves its goal by embedding tiny, non expensive short range tranceivers into the devices available today. The radio operates on the 2.45 gigahertz waveband, and supports up to 721 KBps, along with three voice channels.

Each devices offers a novel forty eight bit address from the IEEE 802 standard, with the connections being point to point or multipoint. The max range is 10 meters, though it will be extended to a undred meters by increasing the power. The devices are also protected from radio interference by changing their frequencies, also known as frequency hopping. What's important, is the fact that Bluetooth devices won't drain battery life. The specification targets power consumption of the device, limiting

the drain on the battery. The radio chip will consume solely zero.3mA in stand by mode, which is less than five-hitter of the facility that normal phones use.

Bluetooth will also guarantee security at the bit level. The authentification is controlled by the user via a 128 bit key. The radio signals can be coded with anything up to 128 bit. With the frequency hopping, Bluetooth is already very hard to listen into. The baseband protocol is a combination of both circuit and packet switches. Slots can be reserved for synchronous packets as well. Each packet will be transmitted in a different hop frequency. Normally, a packet covers a single slot although it will be extended to hide up to 5 slots. Bluetooth can even support knowledge channels of up to three simultaneous voice channels. Therefore, it's potential to transfer the information whereas you speak at the same time. Each individual voice channel will support 64 KB.

From a technical standpoint, Bluetooth is very different indeed. It's the best wireless method in the world, surpassing even infrared. For communication on the go, Bluetooth is indeed very hard to compete with.

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