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Bluetooth Technology Todays Advanced Wireless Communication System

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Bluetooth technology is a wireless communication protocol that connects electronic devices when they are close to each other and intends to replace the cables connecting various types of devices, from mobile phones and headset. Here you can learn more in detail about Bluetooth technology. – PowerPoint PPT presentation

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Title: Bluetooth Technology Todays Advanced Wireless Communication System


1
ELECTRICAL PROJECTS
ELECTRICAL PROJECTS
Bluetooth Technology
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2
Bluetooth Technology
Introduction
  • Bluetooth is a new technology standard using
    short-range radio links, intended to replace the
    cable connecting portable and fixed electronic
    devices.
  • The standard defines as a uniform structure for a
    range of devices to communicate with each other.

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3
Bluetooth Technology
Bluetooth Architecture
  • Bluetooth communication occurs between a master
    radio and a slave radio.
  • Each radio has a 48-bit unique device address
    (BD_ADDR) that is fixed.
  • Two or more radio devices together form ad-hoc
    networks called piconets.
  • Each piconet has one master device and one or
    more slaves

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4
Bluetooth Technology
  • Multiple piconets with overlapping coverage areas
    form a scatternet.
  • Each piconet may have only one master, but slaves
    may participate in different piconets on a
    time-division multiplex basis.
  • A device may be a master in one piconet and a
    slave in another or a slave in more than one
    piconet.

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5
Bluetooth Technology
Protocol Stack
  • The Bluetooth Special Interest Group (SIG)has
    developed the Bluetooth Protocol Stack.
  • The main objective of these specifications is to
    set down the protocols that must be followed by
    companies when manufacturing and developing both
    software and hardware to interoperate with each
    other.
  • The main principle in mind when developing the
    Bluetooth Protocol Architecture has been the
    maximization and the re-use of existing protocols
    for different purposes at the higher layers.
  • The Bluetooth Protocol Architecture also allows
    for the use of commonly used application
    protocols on top of the Bluetooth-Specific
    protocols.

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6
Bluetooth Technology
Protocol Stack
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7
Bluetooth Technology
  • The Bluetooth Core protocols (plus the Bluetooth
    radio) are required by most of Bluetooth devices
    while the rest of the protocols are used only as
    needed.
  • The combination of the Cable Replacement layer,
    the Telephony Control layer and the adopted
    protocol layer form the application-oriented
    protocols which enable applications to run over
    the Bluetooth Core protocols.
  • Bluetooth Protocol Architecture has been
    developed by the Bluetooth Special Interest Group
    (SIG) are intended for rapidly developing
    applications using Bluetooth technology.

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8
   
Bluetooth Technology
Transmission types and rates
  • The baseband (single channel per line) protocol
    combines circuit and packet switching.
  • To assure that packets do not arrive out of
    order, slots (up to five) can be reserved for
    synchronous packets.
  • Circuit switching can be either asynchronous or
    synchronous. Up to three synchronous (voice) data
    channels, or one synchronous and one asynchronous
    data channel, can be supported on one channel.
  • Each synchronous channel can support a 64 Kb/s
    transfer rate, which is fully adequate for voice
    transmissions.

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9
Bluetooth Technology

Bluetooth connections techniques
  • Standby
  • Page/Inquiry
  • Active
  • Hold
  • Sniff
  • Park

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10
Bluetooth Technology
Bluetooth Usage Model
  • Bluetooth Model is Used voice/data access points
    peripheral interconnects Personal Area Networking
    (PAN).

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11
Bluetooth Technology
Bluetooth Usage Model
  • Peripheral Interconnects The second category of
    uses, peripheral interconnects , involves
    connecting other devices together

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12
Bluetooth Technology
Bluetooth Usage Model
Personal Area Networking The last usage model,
Personal Area Networking (PAN ), focuses on the
ad-hoc formation and breakdown of personal
networks
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13
Bluetooth Technology
Advantages
  • No line of site restrictions as with IrDA.
  • power consumption makes integrated in battery
    powered devices very practical.
  • 2.4 GHz radio frequency ensures worldwide
    operability.
  • Tremendous momentum not only within the computer
    industry but other industries like cellular
    telephones and transportation

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14
Bluetooth Technology
Applications
  • The Internet Bridge
  • An extension of this model could be a mobile
    computer that allows surfing the Internet
    irrespective of the location of the user, and
    regardless of whether the user is cordlessly
    connected through a mobile phone (cellular) or
    through a wire line connection (e.g. PSTN, ISDN,
    LAN, xDSL).
  • To know more about Bluetooth applications
    http//www.edgefxkits.com/bluetooth-projects/

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15
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