Tuesday, October 26, 2010

Information on Bluetooth Specifications

Author: Jhonder | at : 9:47 PM | Category : , , , , |
The wireless technology, better known as Bluetooth, has been around for several years already but for a lot of people it is just another “high-tech” word.

In spite of the Bluetooth’s existence, many people still have little to no understanding of this technology and its applications. You can read information on Bluetooth on different magazines and articles or see it in advertisements but one usually has a vague idea about how it really works.

Bluetooth Technology works by transmitting radio waves or signals from an electronic device to another. Usually, the transmission of signals ranges approximately 30 feet or more depending on the Bluetooth specifications. Included in the different Bluetooth specifications of the latest devices is the capability to transmit signals of up to 100 feet.
 
The Bluetooth wireless technology is very much similar to how a computer is connected to other devices using a cable like a monitor, keyboard, mouse and printer or an mp3 player to a headphone.

What is good about using a Bluetooth device is that you no longer have to worry about connecting cables. To have a better understanding of this technology, you should know about the different Bluetooth specifications.

Here are some Bluetooth specifications from the Bluetooth Special Interest Group (SIG):

• The channel of Bluetooth devices in a piconet has 1 Mbps total capacity. Information on handshaking and headers use 20 percent of its total capacity.

• Frequencies in different countries:

1. United States and Europe’s frequency is 2,400 to 2,800 MHz with 79 1-MHz RF channels
2. Japan’s frequency is 2,472 to 2,497 MHz with 23 1-MHz RF channels

• Channel jumps randomly between 79 or 23 RF channels for about 1,600 time a second
• Every channel is sectioned in time slots about 625 microseconds in duration 
• The master in a piconet sends signals in seven time slots while its slaves transmits signals in irregular time slots
• A packet’s width can be as much as five time slots and every data can range up to 2,745 bits long
• Synchronous Connection Oriented (SCO) and Asynchronous Connectionless (ACL) are the two types of data transfer
• Three SCO links that have 64,000 Bps are present in a piconet
• A master can hold up three SCO with one or two slaves
• Slots that are not held in reserve for SCO links can be utilized for ACL links
• A master and a slave can contain one ACL link
• ACL can be either point-to-point meaning master to a slave or transmit to all the slaves
• Slaves in an ACL link can only transmit when the master requests for it

These are the different Bluetooth specifications used in the latest methods of wireless technology. The Bluetooth technology is standardized and for sure it will be around for quite a long time.

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