What is RF Design and Why Is It Important for my Wi-Fi Network?

Let’s face it – Our Wi-Fi expectations these days are pretty high. We want a strong, fast, reliable connection – And we want it all of the time. When we have good Wi-Fi, we barely notice it. But when it’s bad, it’s frustratingly apparent.

Unfortunately, what people don’t tend to realise is that a significant part of your wireless network is the RF environment. If you want your Wi-Fi network to perform to those high expectations, then you need to ensure you get this RF environment right.

Designing Your RF  Environment

It starts with the design. To create an effective RF design, you need to consider the environment that this Wi-Fi network is going to be functioning in. Are their neighbouring networks? What potential factors could cause interference?

You also need to consider how you need your Wi-Fi network to work. How many users are there? Will there be areas of higher density than others? These sorts of things define the requirements of the RF design. If you want good wireless network performance to meet those high expectations we mentioned above, then your RF environment needs to be correctly designed and managed.

The best way to identify what design would work well for your environment is to carry out a Wi-Fi survey. If you’re not confident in carrying this our yourself, then consider calling in the experts! We make it our business to provide comprehensive Wi-Fi surveys for any business or home environment. Our expert engineers can then design a Wi-Fi network tailored precisely to your needs, and then install it for you.

Analysing Your Wi-Fi Network

If your Wi-Fi network is already up and running, but you suspect there may be issues somewhere then network monitoring tools can be a useful way of providing visibility of any problems.

If you’re in the Wi-Fi field, then this will be a fairly straightforward exercise for you if you know the tools and how to use them. More often than not though, Wi-Fi network problems need a more in-depth analysis to really get to the bottom of what’s causing issues.

This again is where it might be best to call in the experts. Our Wi-Fi engineers have the specialist tools and knowledge to look at your Wi-Fi network, analyse traffic flow and examine exactly how data is passing through.

Are you experiencing poor wireless network performance?

It’s important to remember that you have very little to no control over what type of devices enter your network. Your Wi-Fi network may be open to guests or maybe even the general public depending on your business. Even non-Wi-Fi devices can have a significant impact on your wireless network.

Are you experiencing poor performance on your Wi-Fi network? To identify the problem you need to analyse 3 main components of your wireless network.

  • The configuration
  • The RF environment
  • The devices / users in your network

Luckily for you you’ve landed in the right place! Here at Geekabit, our engineers are Wi-Fi experts and can carry out Wi-Fi surveys, Wi-Fi Design and Wi-Fi Installation all from our bases in Hampshire, London and Cardiff. For more information get in touch with us today.

 

How Does Capacity and Coverage affect Wi-Fi Interference?

This week’s blog is the last in our series on Wi-Fi interference and what you can do about it. So far we’ve covered physical causes of Wi-Fi interference, how electrical devices can affect Wi-Fi through frequency interference and today we’re talking about capacity and coverage.

How does capacity affect Wi-Fi interference?

Capacity problems are most commonplace in corporate environments like offices. A potential issue that these environments might face is having too many users per broadcast device. This causes a capacity overload and that’s when you start to run into Wi-Fi problems.

Each Wi-Fi broadcast device, e.g. a router or access point, has a finite amount of bandwidth. This bandwidth is divided by the number of wireless devices connecting to it. So if only 10 devices are connected, then the bandwidth for that router will be divided by 10. It’s almost irrelevant how fast the internet connection is – If 50 people try to connect then the bandwidth is going to split 50 ways.

Ways to avoid issues with capacity and bandwidth, is to make sure that you don’t have just one router or access point serving an area of high density. If you have a lot of users or users with multiple devices in a certain area, then make sure you have the necessary number of broadcast devices. You might find our blog on ‘How Many Access Points do I need?’ helpful for this.

How does coverage affect Wi-Fi interference?

It’s not just about the capacity in an area, you also need to consider the distance that people are needing to connect across. Getting Wi-Fi coverage right is just as important as capacity.

We all know that that closer we are to a broadcasting device, the stronger and more reliable the signal is going to be. If you know that there will be users in a particular area of your office or business that will need to connect, then make sure that there is a device close-by enough to transmit a strong signal.

Coverage isn’t all about distance, it’s also about whether your devices are installed effectively. For example, it’s pointless installing an access point in close range to users if it’s pointing in the wrong direction, or hidden behind something. Wireless broadcast devices like routers or access points emit their signal in certain directions. Obviously you can’t see what way the radio signals are going so make sure that devices are installed properly. Access points that are hidden behind shelves, or wedged in ceiling tiles are not going to work the way they were intended to. Always check the instructions and manufacturers guide when installing any hardware so that they work effectively and reach the maximum coverage possible. If you’re not sure, then ask the experts!

What can we conclude on the types of Wi-Fi interference and their resolutions?

Wi-Fi has come a long way since it first arrived in our lives, and while the gap between wireless internet and wired is certainly closing, there’s always going to be some inferiority for Wi-Fi when comparing the two.

Some of the resolutions we’ve covered in this series of blogs on Wi-Fi Interference are:

  • Check for physical obstruction risks such as metal and concrete, and place your broadcast devices strateigically to mitigate risks.
  • Check your kit and upgrade where necessary. Devices that can use the 802.11ac frequency with dual band functionality are really useful for scenarious where you need to swap from 2.5Ghz to 5Ghz.
  • Always check for firmware upgrades. A bit like how you update the apps on your smartphones, manufacturers are constantly trying to better their performance by enhancing the software that runs them so do keep a watch for updates which are often free.

It’s so important to take careful consideration when designing your Wi-Fi network. If you don’t feel confident assessing your environment for the potential issues in this series of Wi-Fi interference blogs, then consider calling in the experts. Our Wi-Fi engineers can carry out a Wi-Fi survey followed by planning and design and finished with expert installation for effective and reliable Wi-Fi.

It’s Business As Usual for Geekabit

We’re still here, and we’re not going anywhere.

We are lucky that much of our work is done remotely. And for situations where this isn’t possible, we are fortunately able to continue working within the government guidelines.

As the nation once again faces a period of lockdown, we thought we would link some previous blogs that might prove useful in the coming weeks.

Whether you’re in work or find yourself working from home again, you might well encounter some Wi-Fi problems. Thankfully, many of them are pretty common and are relatively easy to fix. The below blog will give you some top tips to keep you connected.

Common Wi-Fi Problems and How to Fix Them

Got yourself such good Wi-Fi that your neighbour’s sneaking on? You need to make your connection more secure. Here’s how.

Who is Stealing my Wi-Fi and How Can I Block Them?

Desperate for a bit of time out of the house? Bet you never thought you’d be longing for the office! The weather might be turning a bit too chilly to be enjoying the sunshine mentioned in this next blog, but it could help get your Wi-Fi set up in the garden shed. Don’t forget your hot water bottle and flask of coffee!

How do I get Wi-Fi in my garden?

A reliable, fast connection is once again going to be the thing to keep us connected – To colleagues, friends and family. Don’t let rubbish Wi-Fi be the thing that isolates you.

As we said, we’re still here for all your Wi-Fi needs. Perhaps you’re thinking that a business empty of employees and customers is the best time to finally get your patchy Wi-Fi sorted. In which case, do give our Wi-Fi experts a call. Operating out of London, Cardiff and Hampshire, our engineers can provide a Wi-Fi site survey, plan and design your new Wi-Fi network and then install it for you.

Maybe your home Wi-Fi network isn’t cutting it for all your zoom calls? Over the past couple of months we’ve installed a number of 4G broadband kits in place of intermittent Wi-Fi, especially in more rural areas.

To discuss any of the above, please get in touch with us today.

How to Measure RF Attenuation Through a Wall
Are you having problems with your Wi-Fi? Perhaps you didn’t carry out a Wi-Fi survey prior to designing and installing your network – Or maybe you skipped the design bit altogether!

 

Dodgy Wi-Fi can sometimes be put down to attenuation, or loss of signal. The main causes of this are the distance the signal is travelling from the transmitter, and objects in the way like walls.

It’s paramount that when you are designing a Wi-Fi network in a walled environment like an office, that you take into account things like walls and their attenuation values. These values can then be used in the design process, indicating where best to place devices and simulate any potential problems that may arise.

Not all walls are the same. Different materials will have a different attenuation value – Basically, some walls will block Wi-Fi signal more than others. Some may be plasterboard, or using plasterboard as a disguise over another material such as brick, concrete, or other materials.

Whatever the material, it’s important to identify what it is and how successfully a signal can get through. Here’s how you can go about measuring the attenuation of  a wall.

 

What you will need:
  • Something to generate Wi-Fi. This could be the hotspot function on your smartphone, a WLAN Pi in hotspot mode powered by a USB, or a battery pack powered Enterprise grade AP. You need to be able to control the transmitting power and the channel so that your measurements will be consistent.
  • A device with which you can measure Wi-Fi. This can also be done with a smartphone through AirPort Utility on iPhone or Aruba Utilities on Android. You could also use an AirCheck G2 or an Ekahau Sidekick. The device you choose will need to enable you to scan only the channel your Wi-Fi generating device is on.

 

What to do:
  1. Identify the wall you are wishing to test.
  2. Place the Wi-Fi generating device at least 4m from the wall, with nothing in-between the device and the wall.
  3. On the measuring device, set the channel to only the scan the channel that your generating device is using.
  4. Point the measuring device towards the generating device on the near side of the wall, making sure that there is a direct line of sight between the devices. Make sure you do not sit or stand between them.
  5. Take a few sets of measurements and make a note of the values. Identify the average for the near side of the wall. You could call this A.
  6. Next, move the measuring device to the other side of the wall, directly in line with where it was before. Again, point the measuring device towards the generating device.
  7. Just like before, take a few sets of measurements and make a note of the values. Identify the average measurement for the far side of the wall. You could call this B.
  8. Work out the wall attenuation: A – B. Make a note of this and document it.

 

Now you know how much the wall is (or isn’t) blocking the Wi-Fi signal. This can help you identify the best positions for devices like routers and access points when designing and installing your Wi-Fi network.

Thinking this all sounds a bit complicated? Luckily for you, our expert Wi-Fi engineers here at Geekabit are pros at carrying out this sort of investigation. We offer site surveys, Wi-Fi design & planning and Wi-Fi installation.

If you already have a Wi-Fi network set up, but have a sneaking suspicion that a particular wall might be causing you problems then we can also help diagnose any Wi-Fi issues in an already established network.

Get in touch with us today to see how our Wi-Fi experts can help you.

Three types of Wi-Fi wireless network
There are three main types of wireless network – How do you know which wireless network is right for you?

Here we’re going to talk about three wireless networks to help you identify which would work best for your business.

We’ll be looking at centralised deployment, converged deployment and cloud-based deployment to see which one suits different types of applications.

Centralised Deployment

The most common wireless network system is centralised deployment. These lend themselves well to environments where buildings and networks are all in close proximity. This type of deployment brings the wireless network together which helps to facilitate advanced wireless functionality. It also enables easier upgrades. Wi-Fi controllers in these networks are based on-site, installed in a location at the centre of the network.

Converged Deployment

This type of wireless network works well for smaller environments such as an office building. They offer a consistency for both wireless and wired connections due to combining them both onto one network device. This device is an access switch which acts as both a switch as well as a wireless controller.

Cloud-Based Deployment

This deployment is ideal for networks that cover multiple locations. Devices connected on the premises of these different locations are managed by cloud software which via a dashboard, enables full visibility and management of said devices.

Once you’ve identified which network your business needs, you can then go about designing it. A site survey is invaluable at this stage, and enables a theoretical map to show up any potential problems before installation goes ahead.

If you need some assistance with your wireless network at any stage – From Wi-Fi site surveys, wireless network design, Wi-Fi installation or help with a current Wi-Fi network – Please don’t hesitate to get in touch with us today. Our expert Wi-Fi engineers are here to help, and are still working out of our Hampshire and London bases.