Wireless connectivity - Bluetooth - Part 4

Wireless connectivity - Bluetooth - Part 4


Important Points:
  • Bluetooth is a short range wireless communication device
  • Lower power consumption helps it's usage in Tablets/Mobiles
  • IEEE 802.15.1 standard
  • Uses frequency hopping spread spectrum to hop between 2400-2480MHz, in steps of 1MHz.
  • Bluetooth is a packet based protocol
  • Range up to 100m, range varies as per receiver sensitivity and geographical conditions
  • With increase in range, speed gets reduced
  • Created by Ericsson, Bluetooth has several versions and all of them are backward compatible
  • No need of Line-of-sight is the biggest advantage
  • Piconet: 1 master can communicate with 7 slaves in a piconet, all share master clock, slave can become a master also in communication process
  • Scatternet: Connection of more than one piconets
  • Operates in ISM band (2400-2480MHz)

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