A Description Of Bluetooth Technology
From Bluetooth Access Point To Piconet
How Bluetooth works:
If you’ve ever wondered how does Bluetooth work to keep all your high tech gadgets connected then you’ve come to the right place, because we’re going to discuss how communications work between Bluetooth devices.
To understand how Bluetooth works entirely we’ll need to examine its 3 fundamental aspects; Networking Type, Bluetooth Receiver, Frequency Range.
A Bluetooth definition would lead to the understanding that it’s just a short range communications protocol in which two devices can connect through a pairing process.
However, an in-depth description of how Bluetooth technology operates with the Best Bluetooth Headset will paint a different image.
The operational relationship between Bluetooth enabled devices is what makes this creative protocol so extraordinary.
It’s this area that we will be focusing on so you can visualize how Bluetooth works to keep all your personal area networking equipment paired together.
We’ll be starting our lesson examining Bluetooth’s networking classification known as a Piconet, by covering how Bluetooth drivers allow it to operate and handle network interconnection between all the devices in its group.
Next we’ll explore Bluetooth’s radio frequency, and examine how it avoids electronic interference with other devices operating within its frequency range, to maintain the best possible connection with any Bluetooth access point detected within its signal range.
The final segment will consider how does Bluetooth work with the different classes of Bluetooth equipment available, which determines Bluetooth range through the amount of transmit power and sensitivity built into the different radio transceivers.
How Bluetooth Works
How Bluetooth works to connect with other devices in its proximity, is through a networking architecture called a Piconet which allows up to 8 devices (1 master and 7 slaves) to participate in an ad-hoc connection.
A Bluetooth piconet is considered to be personal area network due to limited range of generally a few meters used commonly for linking personally owned devices to nearby equipment in a brief exchange of information or establishing a connection to the Internet through another Bluetooth access point.
Bluetooth drivers are used only for controlling by what method a Bluetooth radio transceiver communicates with an operating system of connected devices to the piconet, and is not actually needed for how Bluetooth works.
Master devices such a laptop with Bluetooth can store up to 255 slave devices in its piconet database as paired inactive devices, and will activate and bring into service any Bluetooth radio which is discovered within its signal range until the limit of 7 slave devices is reached.
A Bluetooth access point operates on the 2.4GHz frequency band between 2.4 to 2.485GHz and taking advantage of this spread spectrum by a using a technique called adaptive frequency hopping.
As electronic devices are discovered operating within the vicinity of a Bluetooth access point, the adaptive technology switches or hops to an available unused frequency within the spectrum avoiding interference.
Frequency hopping is how Bluetooth works to maintain greater throughput as less packet resends are needed, and provides electronic interference protection for all Bluetooth devices operating in the piconet.
The operating distance of Bluetooth devices is represented by classes and is how Bluetooth works to determine the transmit power and sensitivity built into the Bluetooth radio transceivers. The Bluetooth range for each class is as follows.
|Bluetooth Class||Maximum Power||Operating Range|
|Class I||100mW (20dBm||100 Meters|
|Class II||2.5mW (4dBm)||10 Meters|
|Class III||1mW (0dBm)||1 Meter|
As devices fall in and out of Bluetooth range the master device in the piconet will release and renew slave device connections as they become available, changing their status from active to parked and back to active again as they come within proximity of the master device.
This dynamic connection behavior of Bluetooth technology is what makes it such an innovative protocol, as novice device users need only to go through the Bluetooth Headset Pairing one time and network connections are stored within the master devices memory chip.
There are all sorts of devices being marketed with Bluetooth technology, and Bluetooth range isn’t limited to just earpieces and keyboards. There’s a full line of high tech Bluetooth devices available in our Wireless Network Store that will enable you to construct an entire wireless home network all using Bluetooth technology.
Well there you have it! We hope we have provided an informative description of Bluetooth technology, so when the next person asks you how does Bluetooth work; you’ll be able to respond with an intelligent and informed answer.