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jan-revay authored Dec 28, 2024
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# WiFi

## Router config (Huawei HG8145X6 FTTH, Orange, Bratislava)
## Router config (Huawei HG8145X6 FTTH, single WiFi access point, Orange, Bratislava)

1. "System tools" tab (resp. the first login screen)
1. Set the root login password for the router's WebGUI.
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1. Note4: If channel 100 is busy (more than 2 access points on it), alternatively channel 36 with 160 Mhz bandwidth, or channel 52 with 80 MHz bandwidth can be used also (not many other options for 80MHz bandwidth with this router).
1. See: <https://www.reddit.com/r/HomeNetworking/comments/18zoroy/best_of_dfs_channels/>
1. (recommended for smaller flats - OPTIONAL) Turn off "Band Steering" on 5 GHz WiFi. <https://www.devolo.global/glossary/band-steering>
1. (recommended) Turn on "Airtime Fairness"
1. "Wi-Fi Coverage Management" -> "Select a policy to synchronize Wi-Fi parameters to the newly detected external AP." -> "Do not enable automatic synchronization." (TODO this is probably not necessary)
1. Test the connection speed and stability from multiple rooms in the flat + multiple devices.


TODO - consider using band steering and a single SSID...
TODO - remove the commented-out text

<!--
## OLD config
## TODO - this did not help - Samsung Galaxy is still dropping the 5GHz network...
1. Try resp. currently trying this: <https://eu.community.samsung.com/t5/galaxy-a-series/galaxy-a34-5g-keeps-disconnecting-from-wifi-after-waking/td-p/8327855/page/8>
2. Why is the interference on the 5GHz channel 100 so high according to the router?
## Router config (Huawei HG8145X6 FTTH, Orange)
1. "WLAN" tab
1. Set SSID and PW on 2.4 GHz and 5 GHz WiFI.
1. "System tools" tab
1. Set the root login password for the router's WebGUI.
1. Turn off led indicators ("Indicator Status Management" -> "Indicator Switch" -> Off).
1. Turn off "Enable Energy Saving" ("Advanced power management" -> "Enable Energy Saving" - uncheck).
1. 5G Basic Network Settings
1. Authentication Mode: WPA3 SAE
1. 5G Advanced Network Settings:
1. Turn off "Band Steering" on 5 GHz WiFi. <https://www.devolo.global/glossary/band-steering>
1. Set the 5GHz "channel" to fixed **100** (see: <https://en.wikipedia.org/wiki/List_of_WLAN_channels>) if it is not interfering with a neighbor's WiFI (use Android WiFi analysis tools to investigate).
1. Note1: Channel 100 is a good choice because it has fewer devices on it as lower channels do and it has enough space for a continuous 80MHz resp. 160 MHz channel width. European weather radars are on channels 120 - 130 <https://www.shmu.sk/sk/?page=2037>, hence the full 160 MHz channel width might be problematic, but 80 MHz width fits well without interfering.
1. Note2: Due to frequency regulation, it takes around 12 minutes until the Wi-Fi network is available after the router is restarted (because channel 100 and channels around it use the DFS algorithm https://en.wikipedia.org/wiki/Dynamic_frequency_selection).
1. <https://www.reddit.com/r/HomeNetworking/comments/18zoroy/best_of_dfs_channels/>
1. Set "Channel width" to "Auto 20/40/80".
1. "Wi-Fi Coverage Management" -> "Select a policy to synchronize Wi-Fi parameters to the newly detected external AP." -> "Do not enable automatic synchronization." (TODO this is probably not necessary)
1. Test the connection speed and stability from multiple rooms in the flat + multiple devices.

## Device config (Android phones, PCs, laptops, ebook readers, smart watches...)

1. Only connect to 5GHz WiFi.
2. Forget the password to 2.4 GHz WiFi on all devices if I used the 2.4GHz band before.
2. (in small apartments) Turn off the "Connect automatically" option for 2.4 GHz WiFi
3. Turn "WiFi scan throttling" in Android Settings -> "Developer options" back on, if I turned it off during testing.
4. Test the connection speed on all devices in multiple rooms of the flat.

Note: Currently I've measured the speeds in all rooms with 2.4GHz and 5GHz WiFi, and 5GHz one is quicker, less congested and more stable everywhere in the flat. Also, the 5GHz connection/signal is lost quicker when I leave the house hence it shortens the glitch while switching to a mobile network (e.g. LTE).
Note: Currently I've measured the speeds in all rooms with 2.4GHz and 5GHz WiFi, and 5GHz one is quicker, less congested and more stable everywhere in the flat (3 room apartment in Petrzalka). Also, the 5GHz connection/signal is lost quicker when I leave the house, hence it shortens the glitch while switching to a mobile network (e.g. LTE) while having an online call/meeting and leaving the flat.

## Additional materials:

## TODO - toread:
### Basic info

1. <https://www.intel.com/content/www/us/en/support/articles/000058989/wireless/intel-killer-wi-fi-products.html>
2. <https://www.ekahau.com/blog/channel-planning-best-practices-for-better-wi-fi/>

### DFS nuances (channels other than 36-48 in SVK)
1. <https://mac-wifi.com/why-i-dislike-dfs-channels-and-you-might-too/>
2. <https://news.ycombinator.com/item?id=34134905>
3. <https://www.reddit.com/r/AmpliFi/comments/ye445i/i_think_i_have_been_killing_my_own_wifi/>
4. <https://metis.fi/en/2017/08/dfs-en/>
5. <https://www.ekahau.com/blog/channel-planning-best-practices-for-better-wi-fi/>
6. ... consider using classic, non-DFS channels?
-->
5. [DFS - The Untold Story | David Coleman | WLPC Phoenix 2020](https://youtu.be/qCzknrd_F8o?si=QCkyuVTB-NcWA41a)

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