ZigBee Network topologies

   
 

Network topology graph.

ZigBee coordinator:

ZigBee coordinator – One is required for each network. The coordinator initiates network formation (PAN). Must be powered continuously.

ZigBee router:

ZigBee Router – Joins the network. A router enables network extension and adds redundant RF paths. A router must be powered continuously.

ZigBee end point:

ZigBee End Point – Joins the network. An end point may contains sensors and IOs. An end point is a low power device that is allowed to sleep.

ZigBee mesh networks main features:

  • Open standard. Allows interoperability by different vendors
  • Redundant communications paths
  • Automatic retries and acknowledgements
  • “Parents” keeping track of messages for sleeping “children””
  • Sleep mode
  • High intrinsic interferenc tolerance
  • Multiple communicaiotns channels
  • Authentication and AES 128-bit encryption
  • Multiple mesh networks can co-exist