You need to configure different radio parameters for AP radios based on actual WLAN environments, enabling the AP radios to work at the optimal performance.
If working channels of adjacent APs have overlapping frequencies, signal interference occurs and affects AP working status. To prevent signal interference, enable APs to work in the optimal status, and improve the WLAN quality, configure any two adjacent APs to work on non-overlapping channels.
Working channels of radios vary according to countries and regions. To conform to local laws and regulations, you need to configure different working channels under different country codes. You can run the display ap configurable channel { ap-name ap-name | ap-id ap-id } command to check the channels supported by the specified AP.
The channels you configure must be supported by the terminals; otherwise, the terminals cannot discover wireless signals.
If an AP detects radar signals on a channel, the channel cannot be configured as the radio channel of the AP in 30 minutes. However, the channel can be configured as the radio channel of other APs not detecting radar signals on it.
It is laborious to manually configure working channels of radios, and difficult to maintain and modify the configuration. To facilitate configuration and maintenance, configure radio calibration to dynamically adjust working channels of radios. For details, see Configuring Radio Calibration.
Configure the transmit power and antenna gain for radios according to actual network environments so that the radios provide sufficient signal strength, improving signal quality of WLANs.
In actual application scenarios, two APs may be connected over dozens of meters to dozens of kilometers. Due to different AP distances, the time to wait for ACK packets from the peer AP varies. A proper acktimeout value can improve data transmission efficiency between APs.
You can configure basic radio parameters in the AP group radio view and AP radio view. The configuration in the AP group radio view takes effect on all specified AP radios in an AP group and that in the AP radio view takes effect only on a specified AP radio. The configuration in the AP radio view has a higher priority than that in the AP group radio view.
The system view is displayed.
The WLAN view is displayed.
The working bandwidth and channel are configured for a radio.
By default, the working bandwidth of a radio is 20 MHz, and no working channel is configured for a radio.
To avoid signal interference, ensure that adjacent APs work in non-overlapping channels.
If an AP works in dual-5G mode, the channels of the two 5G radios must be separated by at least one channel.
For example, a country supports 40 MHz 5G channels 36, 44, 52, and 60. When deploying 5G radio channels, if one radio is deployed on channel 36, it is recommended that the other radio be deployed on channel 52 or 60. Channel 44 is not recommended in this case.
The 80 MHz, 160 MHz, and 80+80 MHz working bandwidths are only supported in the 5G radio view.
For AP models that support 80 MHz, 160 MHz, and 80+80 MHz working bandwidths, see Configuration Limitations for Basic WLAN Services in the Configuration-WLAN Service Configuration Guide.
The antenna gain is configured for the radio.
By default, no antenna gain is configured for AP radios.
The antenna gain is the ratio of the power density produced by an antenna to the power density that should be obtained at the same point if the power accepted by the antenna were radiated equally. It can measure the capability for an antenna to receive and send signals in a specified direction, which is one of the most important parameters to select a BTS antenna. In the same condition, if the antenna gain is high, the wave travels far.
The antenna gain of an AP radio configured using the command must be consistent with the gain of the antenna connected to the AP.
The maximum antenna gain should comply with laws and regulations of the corresponding country. For details, see the Country Code & Channel Compliance Table. You can obtain this table at Huawei technical support website.
Enterprise technical support website: https://support.huawei.com/enterprise
Carrier technical support website: https://support.huawei.com
The transmit power is configured for the radio.
By default, the transmit power of a radio is 127 dBm. The transmit power that takes effect on APs is related to the AP type, country code, channel, and channel bandwidth. It is the maximum transmit power supported by the AP radio under the current configuration. Run the display radio { ap-name ap-name | ap-id ap-id } command to check the maximum value.
You can configure the transmit power for a radio based on actual network environments, enabling radios to provide the required signal strength and improving signal quality on WLANs.
The radio coverage distance parameter is specified.
By default, the radio coverage distance parameter is 3 (unit: 100 m) for all radios.
You can configure the radio coverage distance parameter based on distances between APs and the APs automatically adjust the values of slottime, acktimeout, and ctstimeout based on the configured distance parameter to improve data transmission efficiency.
The working frequency of radios is configured.
By default, radio 0 works on the 2.4 GHz frequency band, and radio 2 works on the 5 GHz frequency band.
On APs supporting radio switching between the 2.4 GHz and 5 GHz frequency bands, some radios support both the two bands. However, such radios can work on one band at a time. You can configure the working frequency band of the AP based on the frequency band of STAs.
If an AP works in dual-5G mode, the channels of the two 5G radios must be separated by at least one channel.
For example, a country supports 40 MHz 5G channels 36, 44, 52, and 60. When deploying 5G radio channels, if one radio is deployed on channel 36, it is recommended that the other radio be deployed on channel 52 or 60. Channel 44 is not recommended in this case.
The radio is enabled.
By default, all AP radios are enabled.
A radio can work only after you enable it.