Calibrating Prediction: What Difference Does it Make?

There are many things we do within their software to maximize prediction accuracy and optimize the design of networks – 3D modeling, inclined surfaces, body loss modeling, etc – but one of the less talked about yet more powerful ways to maximize prediction results is by using the ‘Prediction Calibration’ feature in the software.

What does it do?

Simply put, with prediction calibration, you can use your survey measurements to calibrate the prediction results of your design. 

Why do we have this?

Because no matter how accurately you model your venues with the right materials, you don’t always know what is behind the materials (think steal beams behind drywall for example), or what else is impacting the signal attenuation in a particular space. By using real data to calibrate the prediction algorithm in the software, you will end up with the most realistic prediction results.

Let’s look at the potential difference it can make.

 

Prediction Results with No Calibration

This floorplan is a basic small/medium sized office space – survey has been done to collect the measurements, and the 3 AP design has been completed.

Looking at the RSSI heatmap, and probing a specific area of the floor you can see the following signal strength predictions for 2.4GHz/5GHz.

 

  RSSI Prediction Value (dBm)
2.4GHz -55.72
5 GHz -69.21

 

And when you run the compliance report showing the prediction results against the design requirements for each band, you can see that neither 2.4GHz or 5GHz requirements are met.

 

 

Prediction Results with Calibration

After setting up the calibration model using the measurement data collected during the site survey, the prediction results change and show the following values:

 

  RSSI Value (dBm)
2.4GHz -49.19
5 GHz -58.00

 

And re-running the compliance report, you can see that each band now meets it’s KPI design requirements.

 

 

Comparing Before and After Calibration

To look at the overall difference prediction calibration can make, let’s compare results of with and without calibration applied to the design:

 

  Without Calibration (dBm) With Calibration (dBm) Delta
2.4GHz -55.72 -49.19 -6.53
5 GHz -69.21 -58.00 -11.21

As you can see, the difference can make a meaningful difference, especially when you consider that prior to calibration the design was not meeting their KPI requirements for either the 2.4GHz or 5GHz bands. In this case, with no calibration, the designer may have made unnecessary design adjustments or added more equipment when was not necessary, adding more cost to the design. When using real measurements from the venue to calibrate prediction, you can achieve more realistic prediction results as well.

Wirelessly yours,

Kelly

 

Case Study: How one of the World’s Largest Package Delivery Companies is using iBwave to Manage Thousands of Wi-Fi sites

As one of the largest package delivery and logistics companies in the world, one of our newest iBwave customers came to us wondering how our software could improve their existing process for deploying and managing their many Wi-Fi networks across thousands of their facilities around the world.

Here is the story. 

From the start, it became clear that the biggest challenge this company was facing was the sheer number of sites they had to manage around the globe. With tens of thousands of facilities, all ranging in size, type and location, logistical and process challenges were proving to be costly.

The key challenges they had were:

  1. How to manage their thousands of Wi-Fi networks across many different locations in a more efficient and cost-effective way – in particular how to easily share all data & documentation in a central location
  2. How to collect cellular network data and Wi-Fi network data at the same time to eliminate the dependence on third party companies
  3. How to improve the quality of the network designs to reduce troubleshooting post-install
  4. How to reduce the time it takes to produce the required costing report

To solve these issues, this customer is using the iBwave Design Suite — a powerful combination of iBwave MObile Planner (our mobile app for surveying), iBwave Design (our powerful network design software), and iBwave Unity, our SaaS-based enhanced cloud solution that synchronizes all information and then allows you to monitor, manage and access all of your sites and documentation from one place.

To give you a quick high-level overview of how they all work together, here is a visual of how they interact with one another through the lifecycle of a Wi-Fi network design project from survey to design, deployment and maintenance.

Let’s go through each of the key challenges to see specifically how they were resolved. 

Maintaining All of Their Wi-Fi Networks Across Thousands of Sites

Managing multiple sites is a big challenge for many large Enterprise companies and this customer was no exception. With tens of thousands of facilities located across the United States, the biggest challenge was how to manage the design documentation in a single location to simplify the maintenance and troubleshooting of the network for the ‘Corporate Technical Support Group’ technicians located at the facilities across the globe. 

With their previous set of tools,  survey and design documentation and reports were not centralized in a place where the technicians at the different facilities could access them when troubleshooting or validating a network’s performance. There was also the issue of having to ship a device with dongle licensing out to the facilities whenever a troubleshooting issue arose—often a time consuming and expensive cost.

The Solution

To solve these issues, the powerful combination of iBwave Mobile Planner, and iBwave Unity were implemented.

iBwave Unity is our advanced cloud-based site and project management software that gave this customer a single repository to keep all of their documentation — designs, survey data, site documentation — centralized and synchronized. For the technicians on-site this means they can now easily access previous design and survey data, to have a baseline and test against. 

The problem of having to ship a technician a testing tool each time was solved with our mobile app, iBwave Mobile Planner. With no dongle licensing to worry about, various sites can now keep their own mobile app (usable on any Android mobile device) and use it to survey and test each of the facilities when there was an issue.

Quick shot of iBwave Unity, showing example listing of various network sites ?

The Result

By using the integrated solution of iBwave Unity to centralize site survey information collected by iBwave Mobile Planner, technicians on-site can now easily access previous design documentation and baseline survey measurements for any troubleshooting efforts. 

While no exact number can be given because every site and every troubleshooting effort varies, it’s been seen by our customer that this solution saves them an estimated 50 hours for the average site/troubleshooting effort.

Streamlining the Site Survey Process & Enabling a Converged Approach

Convergence—a word we are hearing more and more from our large Enterprise customers when it comes to managing their network and for this particular customer, an important requirement for doing site surveys.

 Why so important?

While the size of their many facilities varies, the largest and most active facilities (storage and shipping warehouses), can often span more than two million square feet and many of their apps rely on the cellular network to perform. For that reason, it was important for this customer to understand not only their Wi-Fi coverage, but also their cellular coverage and the impact of it on the Wi-Fi network.

Prior to iBwave, to collect the data for the cellular network it was a complicated and costly process, with some key challenges:

  • Outsourcing—since they did not have their own tools to survey cellular data, they had to outsource the job to a third party company often leading to very long delays, and weeks long survey process. 
  • Multiple Site Walks—without the ability to collect the cellular data at the same time as the Wi-Fi data, multiple site walks had to be done to get a complete picture of the networks.
  • Centralized Documentation—without a central place to store and share all site survey data and documentation, surveys would often have to be repeated.

 The Solution

These challenges were resolved with the use of our cloud-based site management software iBwave Unity, and our mobile app, iBwave Mobile Planner, to perform the surveys.

With the ability to collect both cellular and Wi-Fi data measurements at the same time using the mobile app, the dependence on a third party to survey the network was eliminated, as was the challenge of having to do multiple site walks to get all data.  And with the integration of the mobile app  to the iBwave Unity cloud solution, all survey data collected is now be stored in a central cloud repository, eliminating any risk of lost data that needs to be recollected. 

The Results

While not able to put an exact number on it, the time and cost savings are significant now that there is no need to outsource the collection of the cellular data and all data that is needed for a complete design is documented in the cloud where it’s easily accessed by the design team. A survey that may have taken weeks before to gather all data can now be done in days.

“The ability to gather both cellular and Wi-Fi network data ourselves at the same time, in one tool without the help of a third party, is invaluable to us in terms of time, cost and documentation.” – Senior WLAN Design & Support Engineer

Finally, let’s look at the last challenge resolved by using iBwave software—design optimization and quality.

Improving Wi-Fi Network Design Quality & Optimizing Costs

When it comes to any type of wireless network design, if the design is not done well from the start, then it can lead to two things: 1) costly troubleshooting and re-design later, and 2) a design that is not optimized and therefore more expensive than it needs to be.

These two issues are the main reasons our iBwave software is so focused on enabling design optimization and network performance prediction accuracy. We pride ourselves on making sure our customers have the best wireless network design software to deliver the highest quality of designs to their end-users in the most cost-effective way possible. For this customer, the quality of the designs they were getting from their previous design software, and the level of troubleshooting they had to dedicate their resources post-installation, was proving to be a costly challenge. As was the over-designing of the networks – why add more access points if coverage and capacity can be maximized for less?

The Solution

Both of these challenges are ultimately resolved by the powerful features and prediction capabilities in iBwave Design. With features like 3D modeling, inclined surface modeling, propagation through floors, and prediction calibration, the quality and accuracy of the designs will improve significantly.  And accurate prediction results leads to high-quality optimized designs and ultimately less troubleshooting post-install. 

 Simplifying Reporting

Reports and documentation are part of almost any wireless network design project and it is no different for this large Enterprise customer. Especially accurate costing reports.

Prior to iBwave the process to produce these types of reports was manual, tedious and time consuming, often taking almost an hour to put one together, and often at the risk of human error as there was no way to automatically generate them.

The Solution

With iBwave, the time previously spent on manually creating reports is eliminated and costing reports are generated in a matter of seconds with one click. Additionally, costing reports can now be generated at both the individual project basis, or across several different projects, using iBwave Unity. For example, if they want to track costs across particular building types (warehouses, depots, etc) or for a certain region, that is now simple to do in either a report or dashboard. Here are some costing report examples.

Here’s are a couple examples of generating a Bill of Materials, and a Cost Details Report ?

Conclusion

By using the powerful solution of iBwave Unity + iBwave Mobile Planner and iBwave Design, this large Enterprise customer is now able to manage the thousands of sites across the world from a single location – resulting in higher-quality Wi-Fi networks and less time and money spent troubleshooting them.

DOWNLOAD CASE STUDY

Customer Spotlight! Meet RAN WIRELESS and Their Amazing 3D Models

Warning: This blog contains 3D models that may cause you to whoop and holler.

There are a few capabilities that iBwave is well known for in the market, but certainly, one of the most stand-out capabilities is the 3D modeling that comes with the iBwave wireless network design software. And while we can all agree that the 3D models are awesome to look at, the real value behind why our customers use this feature for their network designs is because of the level of prediction accuracy it allows them to pass onto their customers and the network end users – and as a result,  the time and cost savings that comes along with it. Plus yes, the 3D models certainly are a marketing feature for any of our customers in the bidding process, enabling them with a powerful and visual way display exactly how the network they’ve designed will perform in customer’s venue.

One of these customers is RAN Wireless Pvt – an iBwave customer for many years now, RAN Wireless relies on their 3D modeling expertise and the accurate prediction results it brings to win new customers and build strong relationships with their existing ones.

In the words of RAN Wireless CEO, Faisal Khan, “realistic modeling leads to realistic designs”.

It’s a sentiment we’ve heard many times from our customers, and one of the driving forces behind the implementation of our 3D modeling capabilities many years ago.  

Here’s a short demo reel of some impressive models they have done ?

????????…right? 

I sat down and talked with the founder of RAN Wireless, Faisal Khan, a bit ago to learn more about them as a company and to understand more what goes into their modeling, and what the most significant benefits are that they see are as a result of their efforts.

Here’s what he had to say.

What iBwave products do you currently use?

iBwave Design and iBwave Wi-Fi.

What types of projects does RAN Wireless use iBwave for?

We’ve done over 300 designs using iBwave including DAS, Small Cells and Wi-Fi network design projects. We specialize in stadiums, tunnels and metro stations but have done all types of designs including hospitals, hotels, apartments, campuses, convention centers – and many more.

What is your process for modeling? How long does a model typically take you?

We use elevation plans, Sketchup and Google Earth to understand the layers, and visualize the venue, and then proceed with modeling the venue in iBwave itself. We spend the time on this part of the project because an accurate model will lead to accurate results – and for us, the more accurate the prediction results, the less time we spend tweaking or troubleshooting the design post-installation.

How long would one of your stadium designs take to model?

This takes us about two weeks to model – but time spent here saves any time we have to spend post-installation. In fact, it is one of the main reasons our customers choose us – the accuracy with which we can design their networks. If a venue is modelled incorrectly, predictions will be incorrect – we’ve seen it.

Do you model all venues with such detail? Or is it just the larger projects like stadiums?

All of our projects are done to the same level of detail and accuracy.

What is the value of modeling to such detail for you?

As a smaller business, we need to differentiate ourselves and the #1 one we do that is with quality. I always say that for us it is all about quality – it’s something we are never willing to compromise on, and it’s something we are very well known for and the reason our customers stay with us. By modeling the venues we are designing in the most realistic way we can deliver the highest quality of network to our customers. What makes us different to others is iBwave and how we use it.

We often hear that modeling takes so long to do, can you talk about why it’s so important to you and your team to take the time to do it in such a detailed and realistic way?

Every design, in particular for more complex venues like stadiums, tunnels, subways, racetracks, goes through a cycle of approvals and many test walks to check the feasibility of the design. Accurate modeling of the venue and the design itself reduces the time to do these validation walks significantly when it comes to checking the feasibility of component locations.

What about when it comes to prediction accuracy? How much accuracy are you able to achieve with such detailed modeling?

Our prediction accuracy is very high because of the level of effort we put into modeling – this gets reflected in the KPI’s post-installation as we are on average about 95% accurate if we get all the modeling information we need – that 5% margin of error is simply because with 2D drawings it’s very hard to understand some of the more complex structures. For us, this level of prediction accuracy means there is very little troubleshooting to be done once the network is installed, and we don’t have to worry about major issues like moving components, re-routing cables, etc after installation. And in the carrier world, it’s also very difficult to go back to them o get design changes approved once it’s already approved – it can lead to large and costly time delays. So while we do spend more time up front modeling, all in all, it has led to faster overall project cycle timelines.

What is the most valuable thing about iBwave to you?

The whole software is valuable to us, we love the software – and we also love the support that comes with it.

And we appreciate you RAN Wireless! Thanks for taking the time to chat with us!

Wirelessly yours,

Kelly

Interested in being featured in our Customer Spotlight blog series? Send me an email at kelly.burroughs@ibwave.com and let’s chat! 

Exit mobile version