bluetooth

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1.Definition of bluetooth
2.Bluetooth technology
3.Bluetooth operations
4.Voice and data comunication
5.Other bluetooth features
6.How it works
7.Conclusion
   Bluetooth is a low bandwidth
    wireless networking
    technology designed primarily
    to replace cables for
    communication between
    personal computing /
    communication devices .
   It is intended to be used for
    both voice and data
    communication.
 Why is it called Bluetooth
Harald Bluetooth was king of Denmark in the late 900s. He
managed to unite Denmark and part of Norway into a
single kingdom then introduced Christianity into Denmark.
He left a large monument, the Jelling rune stone, in
memory of his parents. He was killed in 986 during a
battle with his son, Svend Forkbeard. Choosing this name
for the standard indicates how important companies from
the Baltic region (nations including Denmark, Sweden,
Norway and Finland) are to the communications industry,
even if it says little about the way the technology works.
    Bluetooth is a
     complicated
     technology internally
     consists of the
     following parts
1.   Radio
2.   Link manager
3.   Base band controller
4.   L2CAP
5.   HCI
6.   API
BLUETOOTH TECHNOLOGY

   Radio
   The bluetooth radio
    converts the digital
    baseband data to
    and from a 2.4Ghz
    analog signal .
   Its range is from
    2.4 Ghz to 2.483
    Ghz .
    BLUETOOTH TECHNOLOGY
   HCI
   Host Controller
    Interface
   It provides a
    command interface
    to the baseband
    link controller and
    link manager , and
    access to hardware
    status and control
    register .
      BLUETOOTH TECHNOLOGY
   API
   (Application Program
    interface)
   These are software
    modules which connect
    the host application
    program to the bluetooth
    communication system .
   As such they reside and
    execute on the same
    processing resource as
    the host system
    application .
    BLUETOOTH TECHNOLOGY
   L2CAP
   Logical Link Control
    And Adaptation
    protocol
   It manages the high
    level aspects of each
    connection that is who
    is connected to who .
   Format of data.
   Implemented in
    software.
    BLUETOOTH TECHNOLOGY
   Link Manager
   It is responsible for
    managing the
    physical details for
    Bluetooth
    connection .
   Creating the link,
    monitoring their
    health, terminating
    them .
       BLUETOOTH TECHNOLOGY
   BASE BAND
   The digital engine of a
    Bluetooth system .
   Constructing and decoding.
   Encoding and managing error
    correction .
   Encrypting and decrypting for
    secure communication
   Calculating radio transmission
    frequency pattern
   Maintaining synchronization
   Controlling the radio
The devices can
Bluetooth is a
dynamic standard .
automatically find
each other .
Establish
connection within
themselves .
And discover what
they can do for
each other .
 Connect  cordless
 headsets to your
 portable PC and use
 the portable PC as a
 speakerphone
 regardless of
 whether you're in
 your office, in your
 car or at home.
   JABRA FREE SPEAK is the
    ultimate hands free and
    wire-free solution that
    connects your mobile
    phone to your headset
    via Bluetooth radio
    technology instead of a
    wire .
   Works upto 30 feet away
    .
   Talk freely across the
    room .
Other Bluetooth features
   LOW COST
   LOW POWER CONSUMPTION
   LOW COMPLEXITY
   CAN HANDLE RAPIDLY CHANGING
    ENVIRONMENT
   CAN DISCOVER SERVICES WITHIN RANGES
   Unlike infrared which uses a
    beam of light to transmit
    data and is found in many
    remote controls , wireless
    keyboards , Bluetooth uses
    a radio frequency (2.4 Ghz)
    to communicate.
   The biggest advantage that
    Bluetooth has over IR is that
    one device doesn’t need to
    be in the line of sight of the
    device that it’s
    communicating with ,so it
    can work through walls and
    floors .
   Bluetooth enabled devices
    can find each other without
    the user’s having to do
    anything .
   When two Bluetooth devices
    come within range of each
    other , they immediately
    begin a series of
    negotiations to determine if
    they have data to share or
    need to make a connection
    , and they form a small
    network known as a piconet
    or a personal area network
    (PAN) .
   In September 1998 ,the Bluetooth SIG was
    founded by a small core of major
    companies – IBM, Intel, Nokia, Toshiba, and
    Ericsson – to work together to develop the
    technology .
   The Bluetooth SIG is a trade association
    comprised of telecommunication ,
    computing and network industry companies
    that is driving the development of a low
    cost short range wireless specification for
    connection of mobile products .
   Currently teletronics and
    its strategic partners are
    jointly developing Home
    Appliance Remote Access
    system which allow
    remote control of home
    security alarms , doors,
    windows, refrigerators,
    washing machine, dryer,
    steam cooker etc .
   All these are remotely
    activated by mobile
    telephones .
            Conclusion
Its wide spreadbluetooth technology
encompasses several key points that facilitate
adoption:

•Its specification is publicly available and free .
•Its short-range wireless capability allows
peripheral devices to communicate replacing
cables that use connectors.
• Bluetooth supports both voice and data.
• Bluetooth uses an unregulated frequency band

				
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