Zigbee
Zigbee is based on the IEEE 802.15 standard, adding network security and framework protocols. It also has a network layer that provides reliable and secure transmission between devices. The transmission rate is around 250 kbps.
Zigbee, as an open global standard, meets the unique requirements for low-cost or low-power wireless IoT networks.
The frequency range supported by Zigbee is mostly 2.4 GHz worldwide. It covers a longer distance compared to Bluetooth.
Zigbee has 16 RF channels.
Here are some key points about Zigbee:
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Developed under IEEE 802.15.4.
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The frequency range supported by Zigbee is mostly 2.4 GHz worldwide.
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It also uses BPSK and QPSK modulation technologies, like UWB.
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There are over sixty-five thousand (65000) unit nodes in Zigbee.
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Zigbee has sixteen RF channels.
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Zigbee also requires low bandwidth, but most of the time it is greater than Bluetooth’s bandwidth.
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The radio signal range of Zigbee is ten to one hundred meters.
Wi-Fi
Wi-Fi is a wireless local area network technology, with devices based on the IEEE 802.11 standard.
Wi-Fi compatible devices can connect to the internet via WLAN networks and access points abbreviated as AP. Each WLAN has an access point responsible for receiving and transmitting user data.
IEEE defines certain specifications for wireless LAN, called IEEE 802.11, which cover the physical and data link layers.
Here are some key points about Wi-Fi:
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Requires wireless adapters on all devices and a wireless router for connection.
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Consumes high power.
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Provides better security.
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Wi-Fi supports a large number of users.
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The radio signal range of Wi-Fi is 100 meters.
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Requires high bandwidth.
Wi-Fi applications include: schools, homes and colleges, company premises and private/public companies, train stations/subway stations, supermarkets, restaurants, cafes, and catering places.
| Zigbee | Wi-Fi |
|---|---|
| Zigbee uses IEEE 802.15.4 and ZigBee Alliance standards. | Wi-Fi uses IEEE 802.11 series standards. |
| Zigbee’s network type is Wireless Personal Area Network (WPAN). | Wi-Fi’s network type is Wireless Local Area Network (WLAN). |
| Zigbee frequency bands are 868/915MHz and 2.4 GHz. | Wi-Fi frequency bands are 2.4 and 5 GHz. |
| Zigbee uses star and mesh topology types. | Wi-Fi uses BSS and ESS configurations. |
| Data rate is 250 Kbps. | Wi-Fi 7 can reach 30Gbps. |
| Modulation technology is BPSK, OQPSK. | Modulation technologies in Wi-Fi include OFDM, CCK, BPSK, QPSK, 16QAM, 64QAM, 256QAM, 4KQAM. |
| Zigbee’s coverage range is 10 to 30 meters. | Wi-Fi’s coverage range is 30 to 100 meters. |
| Zigbee is managed by the Zigbee Alliance and IEEE. | Wi-Fi is managed by the Wi-Fi Alliance and IEEE. |
| Transmission power is -25dBm to 0 dBm. | Wi-Fi’s transmission power is 15 to 20 dBm. |
| Data protection is 16-bit CRC. | Data protection is 32-bit CRC. |
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