topic Interpreting Wi-Fi Survey Data in Wireless

Interpreting Wi-Fi Survey Data

alliasneo1 — Fri, 05 Jul 2024 11:46:58 GMT

Hi, I recently finished a Wi-Fi survey for one of our sites and although signal coverage is good we have a lot of interference. I know this is pretty normal for Wi-Fi but I was wondering what I can do to the Access Points to improve things? Can I adjust power or channels/frequencies?

The picture below is the same area, the top picture is the signal coverage and the bottom picture is the interference.

thanks

Re: Interpreting Wi-Fi Survey Data

Leo Laohoo — Fri, 05 Jul 2024 11:50:49 GMT

@alliasneo1 wrote:
bottom picture is the interference.

What band is the interference, 2.4 Ghz?

Re: Interpreting Wi-Fi Survey Data

alliasneo1 — Fri, 05 Jul 2024 13:23:33 GMT

It is 2.4. When I tick to see 5GHZ only there is no data. But when I select 2.4 it shows the area that I have above.

Re: Interpreting Wi-Fi Survey Data

alliasneo1 — Fri, 05 Jul 2024 13:40:42 GMT

interestingly, I can see a HP computer and when I untick it the blue area completly dissapears. so it would seem that this whole interference is being caused by one device? How would we negate that?

I've just done another walk around and the interference was still there but this time on channels 1 and 6 from difference devices. so when I untick channels 1 and 6 from the survey software the whole area is green.

Re: Interpreting Wi-Fi Survey Data

jagan.chowdam — Fri, 05 Jul 2024 15:49:42 GMT

Are you certain it's a HP computer? I've often seen printers default SSID's causing interference on 2.4GHz channels. I always recommend disabling the wireless capabilities of printers if Wireless Direct Printing isn't needed, especially since most offices connect their printers via LAN.

I use Ekahau survey tools, which offer an option to view the coverage pattern for a specific SSID. Check if your survey tool has a similar feature.

Jagan Chowdam

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Re: Interpreting Wi-Fi Survey Data

Leo Laohoo — Sat, 06 Jul 2024 00:08:57 GMT

Nobody does WiFi AP placement design based on 2.4 Ghz.

Nobody takes 2.4 Ghz post-install WiFi Survey seriously. Personally, 2.4 Ghz is "nice to have" and at the same time "I don't care". We tell everyone who wants to bring in/introduce/implement a WiFi client that the wireless NIC have to (mandatory) operate in 5.0 Ghz because our WiFi environment will only cater for 5.0 Ghz only.

You have no idea how many medical equipment manufacturers try to hoodwink us by telling us that their equipment "can" operate in 5.0 Ghz but manage to "forget" to tell us that it will also require 2.4 Ghz before the 5.0 Ghz will kick in.