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Books
Bluetooth: Connect Without Cables
Bluetooth: Connect Without Cables
by Jennifer Bray Charles F. Sturman
Used from: $3.28

Bluetooth 1.1: Connect Without Cables (2nd Edition)
Bluetooth 1.1: Connect Without Cables (2nd Edition)
by Jennifer Bray Charles F. Sturman
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Used from: $6.95

Bluetooth End to End
Bluetooth End to End
by Dee Bakker Diane McMichael Gilster Ron Gilster
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Bluetooth For Java
Bluetooth For Java
by Bruce Hopkins Ranjith Antony
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Bluetooth Demystified
Bluetooth Demystified
by Nathan J. Muller
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Bluetooth Technology and Its Operation

Bluetooth technology is a wireless protocol employing short-range communications technology to enable the transmission of data over distances no greater than 100 meters between both fixed and portable devices on a wireless network. With little administrative overhead required, the personal area network (PAN) that Bluetooth technology creates can mimic the communications on a local area network (LAN) without the need for wires and physical connectivity. In this sense, it is similar to infrared. However, it lacks infrared's requirement for line of sight positioning among the devices on a network.

 

The prototype circuitry of Bluetooth is housed on a square of nine millimeters. Smaller circuit boards are being developed.

Bluetooth technology enabled devices automatically exchange addresses with each other once they come into range of each other. They will also specify their capabilities. Whatever purposes and functionality they share can then be exploited through a 1 MB secure link. Bluetooth has a flexible topography. The protocols of Bluetooth technology can control both voice and data.

Data transfer and communication between devices is achieved through short range transceivers, tiny in size and low in cost. They are inserted into Bluetooth compatible devices. A radio frequency of 2.45 GHz, set aside by international agreement for devices of an medical, scientific, and industrial nature, is used by Bluetooth technology. With up to 721 KBps and three voice channels (each supporting 64 KB), Bluetooth technology allows for many applications in its use.

Each Bluetooth device has its own unique 48 bit address from the IEEE 802 standard, with its connections being either multipoint or point to point. A maximum range of 10 meters can be increased to 100 meters by a simple increase in power. The devices provide protection from radio interference by a process known as frequency hopping, whereby their frequencies are changed.

Bluetooth specifications target low power consumption as a key condition, and its devices are therefore not drained in terms of battery when using Bluetooth technology. The radio chip consumes just 0.3mA in standby mode. To put that in perspective, a standard cellular phone uses twenty times more power.

The baseband protocol of Bluetooth technology has a number of features:

-It is a combination of circuit and packet switches

-Synchronous packets can be used too, with slots reserved for them if required

-Transmission of each packet takes place in a different hop frequency

-A single slot is normally covered by a packet, although each packet can be extended to cover a maximum of five slots.

With its frequency hopping, hackers will find it difficult to break into and remain on a Bluetooth technology network. Moreover, security is further enhanced with 128 bit key user authentication. Radio signals have the capacity to be encoded with a maximum of 128 bits.



 

GREAT PRICES ON BLUETOOTH HEADSETS!

Features Of Bluetooth Technology Headlines

Sonic Electronix Boosts Bluetooth Product Availability in Response to the Latest Hands-Free Laws

(PRWEB) September 4, 2008 -- SonicElectronix, a leading provider of aftermarket car stereo equipment and consumer electronics, today announced that they would expand their line of Bluetooth...

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Motorola Keeps Consumers Connected in the Car and On the Go with Two New Bluetooth® Enabled Headsets

New York, NY (PRWEB) June 11, 2008 -- www.motorola.com [Motorola, Inc. __title__ Motorola, Inc] the global market leader in Bluetooth enabled accessories today announced two new Bluetooth enabled...

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AT&T to Offer BlueAnt Q1 Bluetooth Headset July 19 - MarketWatch


AT&T to Offer BlueAnt Q1 Bluetooth Headset July 19
MarketWatch
In addition, BlueAnt's Voice Isolation Technology software provides clear call quality by distinguishing the user's voice from other sounds. ...
BlueAnt S1CNET News

all 52 news articles »

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Motorola Rokr S9 HD - CNET News


Motorola Rokr S9 HD
CNET News
The bad: The Motorola Rokr S9 HD can feel unwieldy when exercising or working out, and the Bluetooth connection cuts out occasionally if the paired device ...

and more »

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HTC Touch Pro2 - CNET News


Geekzone

HTC Touch Pro2
CNET News
It also has Wi-Fi, Bluetooth, and GPS. The bad: The smartphone is heavy and bulky. No US 3G support on this version and it's expensive. ...
HTC Snap and Touch Pro2 coming to TelusDigital Home

all 40 news articles »

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