Bluetooth

• Bluetooth


  A short-ranged wireless technology that allows two devices to connect without requiring network infrastructure like a router or access point
• Bluetooth


  • Not encrypted
  • Close range connectivity with short range devices
  • Creates a PAN (LE)
  • Low data transmission
• Types of Bluetooth


  • Bluetooth Classic
  • Bluetooth Low Energy (LE)
• Bluetooth Classic


  Supports two data rates which are Basic Rate (BR) and Enhanced Data Rate (EDR)
• Bluetooth Low Energy (LE)


  Optimized for low power consumption and mainly used for applications that are dependent on battery life
• Bluetooth Classic


  • Used for Point to Point connections mainly, but not limited to audio streaming
• Bluetooth LE


  • Mainly used for PAN Networks, to connect to machines and appliances
• There are 79 different channels spaced by about 1 MHz ranging from 2402 MHz up to 2480 MHz
• Bluetooth has a range of about 33 ft
• Bluetooth


  Bidirectional
• Bluetooth Specifications


  • Bluetooth 1.1
  • Bluetooth 1.2
  • Bluetooth 2.0
  • Bluetooth 2.1 plus EDR
  • Bluetooth 3.0
  • Bluetooth 4.0
• Bluetooth Specifications


  • Voice dialing
  • Call mute
  • Last-number redial
  • Improved resistance to radio frequency interference
  • 10-meter range
  • 100-meter range
• Bluetooth Classic supports voice dialing, call mute, and last-number redial
• Bluetooth LE is optimized for low power consumption