Wi-Fi is the way of the world now. It’s the invisible friend
that comforts us, allows us to binge on Netflix in bed, and equips us to work
from anywhere at any time. Wi-Fi is pretty much a necessity these days.
Sometimes, however, the relationship turns sour — especially when Wi-Fi slows
to a crawl.
When you rely on Wi-Fi, speed issues can hurt.
Unfortunately, speed issues aren’t always easy to diagnose due to the way Wi-Fi
works. One unknown variable could potentially cut your Wi-Fi speed in half, so
it’s important to know what to look for when something’s wrong.
Knowing that, we can now explore some of the lesser-known
reasons behind why your Wi-Fi is so slow — and the best ways to fix those
issues.
Router positioning: High vs low
Most people underestimate the importance of picking a good
spot for a Wi-Fi router. Even a small shift in positioning could end up being
the difference between day and night.
If you’re like most people, you probably unpacked your new
router, located a reasonable outlet location, plugged it in, and simply left it
on a whatever was nearby: a shelf, a desk, or even the ground. As it turns out,
router height does make a difference.
That is to say that leaving your router on the ground or
behind other objects usually results in noticeably worse performance. Instead,
put the router as high up as possible to extend the broadcasting range of the
radio waves. This also helps clear the router of possible interference.
Router positioning: Concrete & metals
Materials like concrete and metal tend to be the worst for
blocking Wi-Fi waves, but even objects of other materials can get in the way of
high-performance wireless. Make sure your router isn’t blocked by any other
objects, especially devices that are electronic.
Also, avoid placing your router in your basement as this
area is usually enclosed by a lot of concrete, which can be almost impossible
for Wi-Fi signals to penetrate.
Router positioning: Distance to router
The further away from your router you get, the weaker the
Wi-Fi signal. Therefore, the best option is to place your router as close to
your devices as possible, but this is only practical if you have one main area
where you tend to use your devices.
Otherwise, you should place your router near the center of
your home. After all, Wi-Fi broadcasts in 360 degrees, so it doesn’t make sense
to put it at one end of the house.
However, if your router is particularly weak or if your
house is particularly big, then you may need to increase the range of those
Wi-Fi waves by using Wi-Fi extenders or repeaters. These are auxiliary devices
that connect to the main router and “repeat” the signal so it covers more area.
Wireless interference & noise
You’ve probably never noticed but there are wireless signals
all around you wherever you go and they’re passing through you all the time.
From where? Electronic devices, Wi-Fi routers, satellites, cell towers, and
more.
Information designer Richard Vijgen created “The
Architecture of Radio” — available on iOS and Android — which uses public
information on satellites and cell towers, along with Wi-Fi information, to
create a map of all the invisible signals around you. I tried this out and you
can see the results from my test in the screenshot above.
Although Wi-Fi is supposed to be on a different frequency
than most of these devices, the amount of radio noise can still cause
interference.
Microwaves can cause interference
Did you know that microwave ovens can cause interference
with your Wi-Fi network? Especially with older routers. This is because
microwave ovens operate at a frequency of 2.45 GHz, which is incredibly close
to the 2.4 GHz Wi-Fi band.
Specifically, the 2.4 GHz Wi-Fi band actually broadcasts
between 2.412 GHz and 2.472 GHz, so there are times when the microwave
frequency can overlap with the Wi-Fi frequency — and when that happens, the
data being transferred gets disrupted.
Most microwaves are properly shielded so no waves should be
detected outside of the oven, but when there is faulty or poor shielding,
that’s when interference can occur.
Wireless interference: Bluetooth devices
It turns out that another favorite type of wireless
connection — Bluetooth — also happens to operate at 2.4 GHz. In theory, a
properly designed device should be shielded in a way that prevents
interference.
Furthermore, in order to prevent frequency clash, Bluetooth
manufacturers use frequency hopping, which is where the signal randomly rotates
between 70 different channels, changing up to 1,600 times per second. Newer
Bluetooth devices may also have the ability to identify “bad” or currently
in-use channels and avoid those.
But interference can still occur, so try moving the router
away from Bluetooth devices (or at least turn those devices off) to see if this
is the cause of your troubles — especially if they are older Bluetooth devices
without channel management
Wireless interference: Christmas lights
Funny enough, Christmas lights (or fairy lights) can be a
devious culprit in slowing down your Wi-Fi because these lights can emit an
electromagnetic field which interacts with your Wi-Fi band. This is especially
bad when using lights with the ability to flash.
You aren’t even safe with modern LED lights because some of
them have flashing chips built into each lamp, and these create an interfering
electromagnetic field.
In reality, all other kinds of lights can cause interference
by emitting electromagnetic fields like this, but the effect is close to
negligible in most cases. However, you should keep your router away from
electric lights just in case.
Check for Channel interference
A truth of the modern world is that every household has
their own Wi-Fi network, which can cause issues with channel overlap. This can
be somewhat problematic in a townhouse, but is especially problematic in
housing complexes and apartments where there can be many routers within close
proximity.
Channel overlap is mostly an issue for routers that can only
broadcast at 2.4 GHz or if you have devices which can only receive a 2.4 GHz
wireless signal. Why? Because there are only 14 channels to broadcast on. Two
routers broadcasting on the same channel at the same frequency will interfere.
Which is why it’s important that you pick a good channel in
your router settings. Modern routers can choose channels for you automatically,
but sometimes it’s better to investigate and find the best channel yourself.
Furthermore, people may try and get on your network without
your knowledge, and this can also slow down your Wi-Fi. The single most
important thing you can do about this is make sure your router doesn’t have an
easy-to-break password. Also, keep your router up-to-date and perform regular
checks for suspicious devices on your network.
Prioritize network traffic
Have you ever left a massive download running on your PC?
Well, in that case you are probably the cause of your own slow Wi-Fi. Downloading
large files can take quite a toll on your Wi-Fi performance. Sometimes this
can’t be avoided — OS updates can be huge, for example — but if you are running
tasks that aren’t urgent, try pausing them.
More likely, however, is that the people on your network —
such as friends, roommates, or family members — are participating in
bandwidth-heavy activities like gaming and streaming Netflix. Fortunately, if
this is the case, you can prioritize your own network traffic by enabling
Quality of Service in your router settings.
Bonus fact: Water can slow down radio waves
Humans are 60% water… and water can slow down radio waves.
While I’m not suggesting that you remove all the people from your house, do
make sure your router is kept out of the main areas where people congregate.
The impact won’t be earth-shaking, but it could be noticeable.
0 comments:
Post a Comment