ZigBeeForDomoticZ plugin Wiki
Zigbee and Wi-Fi
Choosing the channel in the plugin
Zigbee and Wi-Fi share the 2.4 GHz band. The Zigbee channel is set with the channel setting of the WebUI (Settings, Coordinator settings, advanced): default, or a fixed channel from 11 to 26.
- With
default, a zigpy coordinator that forms a new network runs an energy scan and picks the quietest of the channels 11, 15, 20 and 25.
- The setting is only applied when a new network is formed (not when the plugin restores a coordinator backup). To move an existing network to another channel, see Change the Zigbee channel.
The tips below, from NXP’s application note on Zigbee and Wi-Fi coexistence, help choose a channel.
1. Channel Selection
The channels 25 and 26 can be used in North America for operation clear of Wi-Fi interference.
For deployment in an environment where resource planning and bandwidth allocation can be guaranteed (see Section 1.2.5
‘Channel Allocation’), a channel centre-frequency offset of 7 MHz is recommended to ensure acceptable co-existence with Wi-Fi. The non-overlapping channels (1, 6 and 11 for North America, 1, 7 and 13 for Europe) can also be used
to avoid Wi-Fi interference where non-overlapping Wi-Fi channels have been allocated.
2. Physical Separation
Ensuring a physical separation of at least 8 m from a Wi-Fi Access Point (AP) will ensure acceptable co-channel IEEE 802.15.4 performance.
3. Mesh Networking
The ZigBee protocol offers the additional benefits of a self-organizing and self-healing dynamic mesh network. In this kind of environment, path diversity offers better channel use. If a chosen path fails as a result of interference, the network will select a different path
Source: https://www.nxp.com/docs/en/application-note/JN-AN-1079.pdf
Zigbee and Wi-Fi
Choosing the channel in the plugin
Zigbee and Wi-Fi share the 2.4 GHz band. The Zigbee channel is set with the channel setting of the WebUI (Settings, Coordinator settings, advanced): default, or a fixed channel from 11 to 26.
- With
default, a zigpy coordinator that forms a new network runs an energy scan and picks the quietest of the channels 11, 15, 20 and 25. - The setting is only applied when a new network is formed (not when the plugin restores a coordinator backup). To move an existing network to another channel, see Change the Zigbee channel.
The tips below, from NXP’s application note on Zigbee and Wi-Fi coexistence, help choose a channel.
1. Channel Selection
The channels 25 and 26 can be used in North America for operation clear of Wi-Fi interference. For deployment in an environment where resource planning and bandwidth allocation can be guaranteed (see Section 1.2.5 ‘Channel Allocation’), a channel centre-frequency offset of 7 MHz is recommended to ensure acceptable co-existence with Wi-Fi. The non-overlapping channels (1, 6 and 11 for North America, 1, 7 and 13 for Europe) can also be used to avoid Wi-Fi interference where non-overlapping Wi-Fi channels have been allocated.
2. Physical Separation
Ensuring a physical separation of at least 8 m from a Wi-Fi Access Point (AP) will ensure acceptable co-channel IEEE 802.15.4 performance.
3. Mesh Networking
The ZigBee protocol offers the additional benefits of a self-organizing and self-healing dynamic mesh network. In this kind of environment, path diversity offers better channel use. If a chosen path fails as a result of interference, the network will select a different path
Source: https://www.nxp.com/docs/en/application-note/JN-AN-1079.pdf