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This chapter presented an overview of ZigBee, its applications, and its characteristics. The following are the key concepts that were described in the chapter:

  • ZigBee, a wireless sensor and control network, was developed by the ZigBee Alliance.
  • ZigBee applications can be used in home automation, commercial building automation, personal home health care, smart energy, and industrial process monitoring.
  • The first ZigBee specification was published in 2004 and supported home control lighting; the ZigBee Alliance no longer supports the 2004 specification.
  • In 2006, the ZigBee Alliance published the ZigBee 2006 specification, which was a modification of ZigBee 2004 specification.
  • In 2007, ZigBee published ZigBee and ZigBee PRO feature sets.
  • ZigBee defines three main types of devices: the coordinator, router, and end device. In addition, devices can act as a trust center or gateway.
  • The coordinator is a full-function device (FFD). It performs the critical function of controlling the network, starting a network, and permitting other devices to join or leave the network.
  • The trust center performs authentication of devices joining the network, security management, and key distribution.
  • ZigBee offers star, tree, and mesh topologies.
  • It uses layer architecture for its protocol.
  • It uses IEEE 802.15.4 for its physical and MAC layers.
  • ZigBee protocol architecture consists of the application, application support sublayer, and network layers
  • It offers direct, group, and broadcast addressing.
  • A ZigBee end device can have 240 endpoints, where each endpoint may represent different application.
  • ZigBee PRO uses a mesh topology, and it is a beaconless network.
  • ZigBee PRO offers stochastic addressing, group addressing, asymmetric links, fragmentation, and frequency agility.
  • ZigBee PRO offers many-to-one routing and multicast routing.
  • ZigBee PRO offers standard and high-security modes.
  • ZigBee PRO security level is set to 5.
  • ZigBee PRO provides link management.
  • ZigBee PRO end devices are only powered by battery.
  • The ZigBee 2007 specification supports tree and mesh topologies.
  • ZigBee PRO selects the best channel at startup and during operation.
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