What are the problems with
older versions (1.0 and 1.0 B)?
Versions 1.0 and 1.0 B had numerous problems and the various manufacturers had
great difficulties in making their products interoperable. 1.0 and 1.0B also had
mandatory Bluetooth Hardware Device Address (BD_ADDR) transmission in the
handshaking process, rendering anonymity impossible at a protocol level, which
was a major setback for services planned to be used in Bluetooth environments,
such as Consumerism.
What are Different Classes
in Bluetooth?
Bluetooth is a radio standard and communications protocol primarily designed for
low power consumption, with a short range (power class dependent: 1 meter, 10
meters, 100 meters) based around low-cost transceiver microchip in each device.
Bluetooth lets these devices communicate with each other when they are in range.
The devices use a radio communications system, so they do not have to be in line
of sight of each other, and can even be in other rooms, so long as the received
power is high enough.
What are Bluetooth profiles?
A profile is a description of how to use a specification to implement a
particular function. The International Standards Organization (ISO) first came
up with the idea of profiles. In Bluetooth, there are several profiles available
and they are arranged in a hierarchical fashion. For example, in order to use
the headset profile, a device must also include the lower level profiles such as
the serial port and general access profiles.
What are some of the uses of
Bluetooth?
Depending on the Bluetooth profiles included on the device, Bluetooth technology
has the capability to wirelessly synchronize and transfer data among devices.
The Bluetooth audio capabilities can be used for headset and hands free
applications. The exact functionality provided by a Bluetooth enabled device
depends on the Bluetooth profiles included.
How does Bluetooth fit in
with WiFi?
The 802.11b (WiFi) standard is commonly used for wireless networking. Bluetooth
is not a competitor with 802.11b, but rather a complement to it. While 802.11b
is generally a replacement for wired local area networking, Bluetooth is more
commonly used as a replacement for cables between individual devices. Bluetooth
is designed to link devices within a very short range (up to 33 feet ).
Bluetooth is part of the 802.15 standard.
What is the history of
Bluetooth?
Bluetooth was initiated by Ericsson, IBM, Intel, Nokia and Toshiba in early
1998. These companies later formed a special interest group known as the
Bluetooth SIG. The Bluetooth 1.0 specifications were released on July 26, 1999,
but the technology has only recently become inexpensive enough for widespread
use.
What is it - a technology, a
standard, an initiative, or a product?
Bluetooth wireless technology is a de facto standard, as well as a specification
for small-form factor, low-cost, short range radio links between mobile PCs,
mobile phones and other portable devices. The Bluetooth Special Interest Group
is an industry group consisting of leaders in the telecommunications, computing,
and networking industries that are driving development of the technology and
bringing it to market
Is Bluetooth an IEEE
standard, like IEEE 802.11 and Ethernet?
Being an IEEE standard will be a big plus to widespread adoption of Bluetooth,
and IEEE 802.15 working group for personal area networks (PAN) announced that
they will be adopting Bluetooth as the IEEE 802.15 standard.
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