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Module 5: External Communication Interface

20253.5m

Discuss Zigbee protocol and its advantages.

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Zigbee Protocol & Advantages

  • Standard: IEEE 802.15.4, 2.4GHz (global) + 868/915MHz, 250kbps, mesh/star, 10-100m (up to 1.6km with PRO), 16 channels, AES-128 encryption, self-healing mesh.
  • Stack: PHY/MAC + NWK + APL (Zigbee PRO).
  • Advantages: Very low power (battery years), low cost, supports 65000 nodes, mesh reliability, auto-routing, low duty cycle, suitable for sensor networks, home automation, industrial IoT. Compared to Bluetooth/WiFi lower data rate but better power/mesh.
  • 8051 Interface: Via XBee UART as earlier.

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