Bluetooth is a high-speed, low-power wireless link
technology designed to connect phones or other
laptop with little or no work
requested by the user. Unlike infrared, Bluetooth
it does not require the positioning of the site line to function.
The current prototype circuits are contained on a board
which is 0.9 square inches, with a much smaller circuit
When a Bluetooth device comes into contact with
another, they will automatically exchange addresses
and details on capacity. Then they can set
a 1MB link for sure they will use like
necessary. The protocols involved in managing both
data and voice, with a very flexible topography.
The technology achieves its goal by incorporating small,
cheap short range tranceivers in
devices available today. The radio works
Frequency band 2.45GHz and supports up to 721
KBps, along with three voice channels.
Each device offers a unique 48-bit address from
the IEEE 802 standard, with connections
point to point or multipoint. The maximum range is
10 meters, although it can be extended to 100
meters increasing the power. The devices are
also protected from radio interference by changing
its frequencies, also known as frequency hopping.
The important thing is that Bluetooth
devices will not drain battery life. The specific
aims at the device’s power consumption by limiting
low battery. The radio chip
it consumes only 0.3mA in standby mode, which is less
more than 5% of the energy used by standard phones.
Bluetooth will also ensure security on the bit
level. Authentication is controlled by
user via a 128-bit key. Radio signals can
be encoded with any value up to 128 bits. With the
frequency hopping, Bluetooth is already a lot
hard to hear.
The baseband protocol is a combination of both
circuit breakers and packet switches. Spaces can be reserved
also for synchronous packets. Each package
will be transmitted on a different skip frequency.
Typically a package only covers one slot even though
it can be expanded to cover up to five slots.
Bluetooth can also support data channels up to
three simultaneous voice channels. Therefore,
data can be transferred during the conversation
at the same time. Every single voice channel
will support 64KB.
From a technical point of view, Bluetooth is a lot
in fact different. It is the best wireless method
in the world, even exceeding infrared. of
communication on the go, Bluetooth really is
very difficult to compete.