Frequently Asked Questions

1. What is Bluetooth ?

Bluetooth is a protocol specification for wireless connectivity in a home-like environment. Bluetooth range is limited to few meters and requires low power management. It is a big step towards an era of smart rooms and appliances which think and care about themselves and you.


2. Does Bluetooth has a broad Industry support ?

Bluetooth is currently led by the Promoter Group of Bluetooth SIG comprising of Ericsson, Nokia, IBM, Toshiba, Intel, 3Com, Motorola, Lucent Technologies and Microsoft. Currently Bluetooth SIG has more than 2000+ members and is one of the fastest growing SIG.
 

3. Where can I get Bluetooth specification ? Is it license free ?

Bluetooth specification can be downloaded from Bluetooth.com which has more comprehensive information about Bluetooth.com and its SIG. It is totally free and no license is required to use it.



4. What is the frequency band in which Bluetooth radio operates ?

Bluetooth radio operates in the 2.4 GHz ISM band. It uses maximum of 79 RF channels in the band 2400-2497 MHz . Spain, France and Japan lesser (23) RF channels in this band.

 

5. Can you briefly describe Bluetooth stack ?

Bluetooth stack basically has a physical layer (Baseband), data link layer (LMP) and an adaptation layer (L2CAP). You can get more information about protocol stack here .

Bluetooth Stack

6. What is the use of Bluetooth technology ?

Bluetooth technology can be used to connect your PDA-Laptop-Cellphone wirelessly so that you dont have to synchronize each other using cables. It can also be used to convert your Cellphone into a remote control inside your home where you control from microwave oven to TV to music system using it. The best will be when your fridge could automatically dial a technician when it breaks down or your oven downloading a recipe from web and baking it for you with no hassle of setting the temperature or cooking time.

 

7. What is the throughput of Bluetooth?

The raw throughput is 1 Mb/s, with the actual throughput being 728 Kb/s

8. What is HomeRF ?

HomeRF, like Bluetooth, is a specification for connectivity and mobility in a home-like environment. The HomeRF Working Group developed a specification for wireless communications in the home called the Shared Wireless Access Protocol (SWAP). The HomeRF Working Group disbanded in January 2003.