How to fix Wi-Fi interference

Addressing Wi-Fi interference can include better placement of access points, balancing traffic between the 2.4 GHz and 5 GHz bands, beamforming, and eliminating other sources of radio-frequency signals.

static tv television monitor malfunction broken reception by the7dew getty 100787986 orig
7dew / Getty Images / Ivke32

Since Wi-Fi transmits over the airwaves, it’s of course much more susceptible to interference than the wired network. There can be interference from your own network or neighbor's, non-Wi-Fi wireless devices, microwaves, and even radar systems. Because there are so many possibilities, tracking down or fixing the interference can be quite a task, but knowing where to start can help.

The symptoms of interference issues can easily be mistaken for symptoms of other, more apparent problems such as poor Wi-Fi coverage. If so, maybe you blindly add more access points (AP) and, not knowing that you already had interference, that can actually cause more interference. So, try to find the root causes of any symptoms and be very intentional about the changes you make.

Signal-to-noise ratio

Although some people only talk about signal levels when designing or troubleshooting Wi-Fi networks, you must consider more. A client can be right next to an AP with excellent signal but be unable to keep a connection if the signal from another Wi-Fi or any other type of radio-frequency device is too great. Such signals from other devices are just noise to yours.

To continue reading this article register now

SD-WAN buyers guide: Key questions to ask vendors (and yourself)