Bluetooth Explained


Bluetooth is a wireless technology used in cellular devices and some computer external accessories. Unlike Wi-Fi, Bluetooth is more easily configured and does not require the same configuration steps and requirements that Wi-Fi requires. Bluetooth is only able to access devices within a short distance to the emitted signal.


  • Piconets are a type of Bluetooth network. Each Bluetooth device can communicate with seven other devices. The small network of cell phones and PDAs that use Bluetooth allows fast communication among short ranges.


  • Bluetooth is connected on a certain frequency. The frequency is unlicensed, so it is free to the public to use. The frequencies Bluetooth uses are the 2.4 to 2.485 GHz bands.


  • Bluetooth is not intended for long distances between devices. The best performance is when the user is within 10 meters of the Bluetooth device. More advanced Bluetooth devices allow users to travel 100 within meters of the device.


  • Because Bluetooth is used on PDAs and cell phones that are powered by batteries, the technology runs on only a small amount of power. Bluetooth chips use 2.5 mW of power, so they do not have a lot of drain on the battery.

Data Transfer Rate

  • The data transfer rate of Bluetooth is dependent on the version and the distance from the device. Longer distances lead to interference and poor transfer rates. The data transfer rate of Bluetooth range from 3Mbps to 24Mbps.


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