WMM & DSCP Tunning for AC & AP

I have configured WMM & DSCP on the Ruijie RG-SC6705-SP controller to make online meeting traffic more stable. However, after implementation, the online meetings are still unstable and frequently disconnected. Are there any other configuration suggestions that can be tried, and are there any alternative solutions?
The issue observed is high channel usage (around 70–90%) on both 2.4 GHz and 5 GHz, along with significant interference from other nearby APs
this is the config :
1. Config AP WMM + EDCA Tunning
WLC#conf t
WLC(config)#ap-config AP2
WLC(config-ap)#wmm enable radio 1
WLC(config-ap)#wmm edca-client voice aifsn 2 cwmin 2 cwmax 3 txop 50 radio 1
WLC(config-ap)#wmm edca-radio voice aifsn 1 cwmin 1 cwmax 3 txop 50 radio 1
WLC(config-ap)#wmm edca-client video aifsn 2 cwmin 3 cwmax 4 txop 94 radio 1
WLC(config-ap)#wmm edca-radio video aifsn 1 cwmin 2 cwmax 3 txop 94 radio 1
2. Config WLAN DSCP – WMM Mapping
WLC(config)#wlan-config 1
WLC(config-wlan)#wlan-qos map-table dot11e-tunnel-dscp import 7 export 46
WLC(config-wlan)#wlan-qos map-table dot11e-tunnel-dscp import 5 export 34

Dear
Sir, if you find that the signal currently used by the AP has significant co-channel interference, you can use your phone to scan for nearby channels that are more idle and switch the AP to use the idle channel
best regards
Scenty

GTAC-Scenty replied at 2026-4-1 13:29
Dear
Sir, if you find that the signal currently used by the AP has significant co-channel interferen ...

i tried all the channel and everything is not ideal because very strong interference, do u have another tips for this issue?

Pambuka replied at 2026-4-1 14:23
i tried all the channel and everything is not ideal because very strong interference, do u have an ...

Dear sir,
Good day.
In this situation, it's necessary to consider whether the locations where your wireless devices are installed are too dense, leading to severe interference between access points (APs).

Channel planning is also crucial in this case:
2.4GHz: Only three non-overlapping channels (1, 6, and 11). In enterprise environments, try to disable 2.4GHz or retain only a small amount of access capability unless there are older IoT devices that require it. Interference in 2.4GHz is almost unavoidable.
5GHz/6GHz: As the primary frequency band. Use high-frequency channels (e.g., 149-165) and low-frequency channels (36-64) for physical isolation to ensure that the cellular coverage of adjacent APs does not overlap.

Best regards,
Lex