Bluetooth Technical Operations
Bluetooth is a high speed, low powered wireless link
technology that's designed to connect phones or other
portable equipment together with little to no work
required by the user. Unlike infrared, Bluetooth
doesn't require line of site positioning to work.
Current prototype circuits are contained on a board
that is 0.9 cm square, with a much smaller circuit
board being developed.
When one Bluetooth device comes in contact with
another, they will automatically exchange addresses
and details of capability. Then, they can establish
a 1 MB link with security that they will use as
required. The protocols involved with handle both
data and voice, with a very flexible topography.
The technology achieves its goal by embedding tiny,
non expensive short range tranceivers into the
devices available today. The radio operates on the
2.45 GHz frequency band, and supports up to 721
KBps, along with three voice channels.
Each devices offers a unique 48 bit address from
the IEEE 802 standard, with the connections being
point to point or multipoint. The max range is
10 meters, although it can be extended to 100
meters by increasing the power. The devices are
also protected from radio interference by changing
their frequencies, also known as frequency hopping.
What's important, is the fact that Bluetooth
devices won't drain battery life. The specification
targets power consumption of the device, limiting
the drain on the battery. The radio chip will
consume only 0.3mA in stand by mode, which is less
than 5% of the power that standard phones use.
Bluetooth will also guarantee security at the bit
level. The authentification is controlled by the
user via a 128 bit key. The radio signals can
be coded with anything up to 128 bit. With the
frequency hopping, Bluetooth is already very
hard to listen into.
The baseband protocol is a combination of both
circuit and packet switches. Slots can be reserved
for synchronous packets as well. Each packet
will be transmitted in a different hop frequency.
Normally, a packet covers a single slot although
it can be extended to cover up to five slots.
Bluetooth can also support data channels of up to
three simultaneous voice channels. Therefore,
it's possible to transfer the data while you talk
at the same time. Each individual voice channel
will support 64 KB.
From a technical standpoint, Bluetooth is very
different indeed. It's the best wireless method
in the world, surpassing even infrared. For
communication on the go, Bluetooth is indeed
very hard to compete with.
(word count 415)
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Disclaimer
The Publisher has strived to be as accurate and complete as possible in the creation of this website, notwithstanding the fact that he does not warrant or represent at any time that the contents within are accurate due to the rapidly changing nature of the Internet.
This site is a common sense guide to Bluetooth Technical Operations. In practical advice websites, like anything else in life, there are no guarantees of income made. Readers are cautioned to reply on their own judgment about their individual circumstances to act accordingly.
This site is not intended for use as a source of legal, business, accounting or financial advice. All readers are advised to seek services of competent professionals in legal, business, accounting, and finance field.
Any perceived slights of specific people or organizations are unintentional.
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Bluetooth And Apple
Choosing A Bluetooth Headset
Using Bluetooth
Key Learning Points Of Bluetooth
Introduction To Bluetooth
Bluetooth Glossary
Bluetooth Technical Operations
Bluetooth Operation
Bluetooth Profiles
The Future Of Bluetooth
Connecting Many With Bluetooth
How Bluetooth Works
Bluetooth In Action
10 Benefits Of Bluetooth
Bluetooth Applications
Bluetooth Wireless Networking
Bluetooth Basics
Bluetooth Versions
Bluetooth Technology Intro
Bluetooth And Infared
Advantages And Disadvantages
The Bluetooth Solution
Bluetooth Definition
Bluetooth Security
Bluetooth Specifications
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