Configuring the AMC Algorithm for a Radio

Context

Adaptive Modulation and Coding (AMC) Algorithm for a Radio

Radios need to adjust the AMC algorithm according to different scenarios to deliver the optimal user experience. Three AMC algorithms are available:

auto-balance: applicable to most wireless scenarios
high-stability: applicable to scenarios with continuous interference.
high-throughput: applicable to scenarios with good wireless signals and non-continuous interference.

AMC Optimization in High-Density Scenarios

In typical high-density scenarios, a large number of hidden nodes exist, which interfere in communication between APs and STAs and affect product performance. The AMC optimization function can reduce such interference and improve the AMC algorithm performance.

It is recommended that this function be enabled in high-density scenarios where directional antennas are used.
This function is not applicable to scenarios where STAs move fast between APs.

Pre-configuration Tasks

Before configuring the adaptive modulation and coding (AMC) algorithm, perform the task of WLAN Service Configuration Guide.

Procedure

Run system-view
The system view is displayed.
Run wlan
The WLAN view is displayed.
Run rrm-profile name profile-name
An RRM profile is created, and the RRM profile view is displayed.
Run amc-policy { auto-balance | high-stability | high-throughput }
An AMC algorithm is configured for the radio.

By default, a radio uses the AMC algorithm auto-balance.

This takes effect only on APs in compliance with 802.11n.
Run high-density amc-optimize enable
The AMC optimization function in high-density scenarios is enabled.

By default, the AMC optimization function is disabled in high-density scenarios.
- Only 802.11ac Wave 2 and 802.11ax APs support the adaptive modulation and coding (AMC) optimization function in high-density scenarios.
- This function does not take effect in MU-MIMO mode.
Run quit
Return to the WLAN view.
Bind the RRM profile to a radio profile.
1. Run the radio-2g-profile name profile-name or radio-5g-profile name profile-name command to enter the 2G or 5G radio profile view.
2. Run the rrm-profile profile-name command to bind the RRM profile to the 2G or 5G radio profile.
3. Run the quit command to return to the WLAN view.
Bind the radio profile to an AP group or a specific AP. For the detailed procedure, see Binding a Radio Profile.

Verifying the Configuration

Run the display rrm-profile name profile-name command to check the AMC algorithm configured for radios in the RRM profile.
Run the display radio-2g-profile name profile-name command to check the RRM profile bound to the 2G radio profile.
Run the display radio-5g-profile name profile-name command to check the RRM profile bound to the 5G radio profile.