High Lost + FEC_R rate for 2.4g range

[furang]

``Hello. I have spent some time to make this work with default settings (used simple gst pipeline over udp) and it works, but i have high lost rate packets.


I couldn't solve this for now, but when i switched to 5Ghz freq range (channels 161 or 165) this works perfecrly fine and there are near 0 loss rate.
So how I can improve working on 2.4Ghz (1-12 chnnelds). I tried different channels, different bandwidths, but this doesn't seem to help.
I use this cards for both drone and gs.

Here are my settings.
GS

[common]
wifi_channel = 10     # 165 -- radio channel @5825 MHz, range: 5815–5835 MHz, width 20MHz
                       # 1 -- radio channel @2412 Mhz,
                       # see https://en.wikipedia.org/wiki/List_of_WLAN_channels for reference
wifi_region = 'BO'     # Your country for CRDA (use BO or GY if you want max tx power)

[gs_mavlink]
peer = 'connect://127.0.0.1:14550'  # outgoing connection
# peer = 'listen://0.0.0.0:14550'   # incoming connection

[gs_video]
peer = 'connect://127.0.0.1:5600'  # outgoing connection for
                                   # video sink (QGroundControl on GS)

Drone

[common]
wifi_channel = 10     # 161 -- radio channel @5825 MHz, range: 5815-5835 MHz, width 20MHz
                       # 1 -- radio channel @2412 Mhz, 
                       # see https://en.wikipedia.org/wiki/List_of_WLAN_channels for reference
wifi_region = 'BO'     # Your country for CRDA (use BO or GY if you want max tx power)  

[drone_mavlink]
# use autopilot connected to /dev/ttyUSB0 at 115200 baud:
# peer = 'serial:ttyUSB0:115200'

# Connect to autopilot via malink-router or mavlink-proxy:
# peer = 'listen://0.0.0.0:14550'   # incoming connection
# peer = 'connect://127.0.0.1:14550'  # outgoing connection

[drone_video]
peer = 'listen://0.0.0.0:5602'  # listen for video stream (gstreamer on drone)

On Both sides I've installed this driver
https://github.com/svpcom/rtl8812au
according to the guide.

So how can I improve my experience on 2.4Ghz? Thanks.

[svpcom]

2.4G band is not usable in urban area. Also 8812au may have bad behavior on 2.4G (some cards doesn't have 2.4 band soldered at all, other have hw issues with it). For 2.4G band you may try usb ath9k cards.

[furang]

Thanks for such quick response!
Your project is great. Very good work.
I also thought it was because of collisions in big town. But i also tried it at fields and result was the same.
I also have a pair of this 8812EU and a pair of this AR9271.
Should they work better for 2.4 band? Are any additional preparation required for ath card (like installing custom driver or something else)? Thanks!

[svpcom]

8812eu (as BL-M8812EU2 module) is 5GHz only
ar9271 should work, but there are a lot of fakes (or partially broken cards) on ali.