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Bluetooth Technology


Bluetooth Technology By Corban Tomlinson Bluetooth The name originated from King Harald Bluetooth of Denmark. He united Denmark and Norway in the late 900 s http ... – PowerPoint PPT presentation

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Title: Bluetooth Technology

Bluetooth Technology
  • By Corban Tomlinson

  • The name originated from King Harald Bluetooth of
    Denmark. He united Denmark and Norway in the late
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  • The Swedish company decided on the name to show
    the importance of the Nordic regions impact on
    communication technology

What is it?
  • Bluetooth is a wireless technology that allows
    enabled devices to sync and transfer information
  • It is designed for short range communication
    replacing the need for physical cables and
    infrared beams while maintaining security
  • Key Features Robustness, Low power consumption,
    Low Cost

Alternatives to Bluetooth
  • Ethernet Cord
  • Cable Cord
  • Electrical Wires
  • WiFi
  • Infrared Signal

What is it used for?
  • Bluetooth technology wirelessly connects devices
  • Some common uses for it are
  • Hands free set for calls
  • Printing/Fax Capabilities
  • PDA synchronization
  • Notebook/Laptops
  • Mobile Phone
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How it connects
  • Once the device is turned on it sends out a
    signal searching for other devices
  • It operates on the unlicensed industrial,
    scientific, and medical (ISM) radio band
  • Once a connection is made, a personal area
    network is formed the signal uses Adaptive
    Frequency Hopping (ADF) to hop along 79
    frequencies about 1600 times per min

  • It also prevents the Bluetooth device from
    interfering with other devices because it only
    uses each frequency for a split second
  • The Range of these devices is divided into 3

Class 1 100 mW 100 meters
Class 2 2.5 mW 10 meters
Class 3 1 mW 1 meter
Bluetooths Uniqueness
  • Bluetooth devices can connect to up to 8 other
    devices at a time
  • This product gives the ability to support and
    send data and voice applications
  • It doesnt use much power and when it is out of
    use it powers down to save battery reserve
  • The new 2.0 version can transfer 3 Mbps which is
    an upgrade from the original 1 Mbps

Layers of technology
  • Bluetooth has individual layers of links and
    channels for different functions
  • Physical Channel, Physical Link, Logical
    Transport, Logical Link, L2CAP channel
  • These different channels are responsible for the
    radio frequencies, data transmission, and voice

Core System
  • Bluetooths core architecture is a design
    consisting of Service Discovery Protocol (SDP)
    and General Access Profile (GAP)
  • The SDP allows the Bluetooth devices to discover
    each other, communicate, and form a network
  • Each channel in the Bluetooth device communicates
    with both the other channels in its own device
    and the corresponding part of the other connected

Core Architecture
  • Channel Manager creates, manages, destroys L2CAP
    channels to help stream data and service
    protocols for the specific type of data being
  • L2CAP Resource Manager makes sure access will
    not be denied on radio band, makes sure frequency
    is open
  • Device Manager It is responsible for all
    behavior not including data transport. Makes
    device discoverable, connected, and other general

Core Architecture
  • Baseband Resource Manager controls all access on
    radio medium. It has 2 functions
  • 1) the scheduler grants time on channels
  • 2) negotiates (manages) the connection to make
    sure the QoS (Quality of Service) required by
    Bluetooth is present

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