OpenWRT OFDMA, MU-MIMO, BSS Coloring, Beamforming, and TWT switch ON/OFF

[Trzciano]

Hi,

I'm a student currently working on my engineering thesis.
I wanted to explore the impact of factors like OFDMA, MU-MIMO, BSS Coloring, Beamforming, and TWT on network speed. I was wondering if there's a way to toggle these options on and off. I'm currently using OpenWRT 23.05.3 on Xiaomi AX3200 router model RB01. I tried looking for these options in the graphical interface but couldn't find them.
Are there any libraries or configuration files where I can make these changes? Or maby you recommend any other software that would allow me to change all these settings?

Thanks in advance for your help.

[brada4]

You need to disable ax to remove mandatory color field. Rest is written in wiki.

[Trzciano]

By disable ax, you mean to switch it to ac?

I was trying to find those options. "Rest is written in wiki" isn't really helpful for me. I'm new to OpenWRT, so if you could provide any additional information or a link, it would be nice.

[brada4]

You need to override all he_caps vht_caps and ht_caps
Caps are in /var/run/hostapd*.conf , you can pass modified version with unwanted caps disabled.
https://openwrt.org/docs/guide-user/network/wifi/basic
Cisco keeps good descriptions on what each means, or you can acquire standards via your educational establishment.

[Trzciano]

I had seen topic with /var/run/hostapd*.conf, that was also what chat suggested me, but when i enter my files on PuTTy i dont have any conf files like this, I use OpenWRT 23.05.3

[egc]

root@DL-WRX36:~# ls /var/run/hostapd*.conf
/var/run/hostapd-phy0.conf

[Trzciano]

[egc]

Wireless disabled or not started?

You can check with:
wifi status

root@R7800-2:~# wifi status
{
        "radio0": {
                "up": true,

[brada4]

grep _capab= /var/run/hostapd*conf
/var/run/hostapd-phy0.conf:ht_capab=[LDPC][SHORT-GI-20][SHORT-GI-40][TX-STBC][RX-STBC1][MAX-AMSDU-7935]
/var/run/hostapd-phy1.conf:ht_capab=[HT40+][LDPC][SHORT-GI-20][SHORT-GI-40][TX-STBC][RX-STBC1][MAX-AMSDU-7935]
/var/run/hostapd-phy1.conf:vht_capab=[RXLDPC][SHORT-GI-80][TX-STBC-2BY1][SU-BEAMFORMER][SU-BEAMFORMEE][MU-BEAMFORMER][MU-BEAMFORMEE][RX-ANTENNA-PATTERN][TX-ANTENNA-PATTERN][RX-STBC-1][SOUNDING-DIMENSION-2][BF-ANTENNA-2][MAX-MPDU-7991][MAX-A-MPDU-LEN-EXP7]

[Trzciano]

you are right, i didnt know wifi is disabled by deafult
now its working

[egc]

If you are satisfied and have a working solution for your use case please mark that solution as solved:

How to mark a topic as [Solved]

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[Trzciano]

actually, I haven't managed to figure out how to disable individual options yet, so I'll leave the thread open, I'm currently working on editing these files:

[brada4]

All options are here: https://w1.fi/cgit/hostap/tree/hostapd/hostapd.conf
You need to pass them via /etc/config/wireless to these generated files.

[Trzciano]

What do you mean by pass them via /etc/config/wireless?
I've changed this file:

config wifi-iface 'default_radio1'
option device 'radio1'
option network 'lan'
option mode 'ap'
option ssid 'OpenWrt'
option encryption 'psk2'
option key 'xxx'
option he_mu_beamformer '0' --- new line

After save and reboot my hostpad*.conf didnt change:

Is it something wrong or should i directly change the hostpad*.conf file?

[brada4]

You need to restart wpad service or wifi radio

[_FailSafe]

Did you ever get all of this figured out?