Zigbee Mesh Networks

Scope

Zigbee is a low-power, short-range, wireless mesh networking standard based on IEEE 802.15.4, widely deployed in smart homes, building automation, and industrial sensing.

Architecture & Topology

• Device Roles:
  • Zigbee Coordinator (ZC): Exactly one per network; establishes network, manages security keys.
  • Zigbee Router (ZR): Mains-powered; passes routing packets, extends network range.
  • Zigbee End Device (ZED): Battery-operated; sleeps most of the time; talks only through parent router.
• Zigbee Cluster Library (ZCL): Standardized attributes and commands for interoperable profiles (Lighting, HVAC, Occupancy).

Tools & Standards

• Standards: Zigbee 3.0 Specification (Connectivity Standards Alliance - CSA).
• Hardware/Software: TI CC2652, Silicon Labs EFR32, Zigbee2MQTT, ZHA.