WLAN Measurement & Evaluation: Optimization for Optimal Performance & Reliability

In which cases is it important to measure and evaluate the current WLAN radio waves?

"WLAN measurement and evaluation are important in various situations, such as when dealing with unexplained network problems, conducting inventories, planning the next WLAN lifecycle, and for new or renovation projects."

_In situations where customers contact us and describe network problems, we are able to quickly determine whether the problem lies in the radio waves or in the physical network based on the available measurement data. This allows for a more efficient troubleshooting process and a quicker resolution of the problem. By pinpointing the problem, we can take further steps to fix it and bring the network back to an optimal state as soon as possible.

Customers often call us to conduct a general inventory of their WLAN situation and find out what performance they are currently achieving. This includes a complete inventory of the existing WLAN infrastructure to precisely determine what they have. It may be an older solution, and the customer wants to know if it still meets their needs. It is crucial for the customer to know exactly what infrastructure they are working with to successfully plan for the future.

Another common situation is the end of the WLAN lifecycle, which typically lasts between 5 and 7 years. In this case, customers want to plan ahead and seek recommendations for a new WLAN lifecycle.

Another significant situation concerns new constructions or renovations, especially when structural changes are made to the building. For example, when an extension or renovation takes place, it is important to conduct a review of the WLAN situation, as these can greatly affect the propagation of radio waves in the WLAN. In new constructions, it is essential to set the budget for the entire network infrastructure. In this case, we can help by creating a calculation based on the architect's floor plans. Even with small changes during construction, unforeseen influences on the WLAN can occur. An interesting incident occurred, for example, when a wall painted with blue paint containing metal particles caused interference in the WLAN. Many often do not think about it, but such factors must be considered during troubleshooting.

How is a professional WLAN measurement and evaluation performed?

"We use specialized measurement devices that are automated to traverse through every building and capture WLAN signals. This targeted localization enables a quick troubleshooting process and a rapid solution to the problem."

_A professional WLAN measurement and evaluation begins with a comprehensive audit of the entire infrastructure. WLAN and network engineers are involved in this process, surveying the entire infrastructure, such as the entire campus of a university, and capturing and analyzing each individual room to determine the number of access points present. This process is carried out using specialized measurement devices that work automatically. The device is guided through every building while capturing and registering WLAN signals. Thanks to its efficiency, the device instantly recognizes its location, simplifying the measurements. This allows for precise and efficient WLAN measurement and also facilitates troubleshooting if problems are identified.

After the inventory, a visualization of the WLAN infrastructure can be created, and any problem areas identified. Subsequently, optimization suggestions are developed based on the existing infrastructure. This may include, for example, relocating or adding access points to ensure optimal WLAN coverage and performance. This optimized plan assists in further planning and implementation.

Once the proposed measures have been implemented, validation follows to verify whether the desired results have been achieved. Validation is particularly recommended for business-critical environments. Tests are conducted, and an acceptance protocol is created to ensure that the WLAN network meets requirements and provides optimal performance.

In which scenarios is "deep troubleshooting" utilized, and how are different facets considered in WLAN measurement?

""Deep troubleshooting" involves examining the radio waves as well as checking the data traffic and the access of end devices to the network. This allows us to find comprehensive solutions for technical problems to optimize the performance and reliability of the WLAN network."

_"Deep troubleshooting" is applied when technical issues arise that cannot be resolved solely by observing the radio waves. In such cases, we work closely with our technical engineers to thoroughly analyze and address the problem. While I focus on examining the radio waves, the engineer takes charge of checking various additional aspects. We investigate the data traffic and monitor the access of end devices to the access point and the controller system. Through these in-depth investigations, we ensure that potential technical issues are identified and addressed appropriately. Monitoring the data traffic provides insights into the network's performance and communication, enabling detailed diagnosis.

By combining the examination of radio waves with checking data traffic and end device access to the network, we can find a comprehensive solution to technical problems. This holistic approach ensures that potential issues are identified and effectively resolved to optimize the performance and reliability of the WLAN network.

What learning outcomes have you observed for customers regarding WLAN measurement and evaluation?

"We can create "predictive" visualizations with an accuracy of 70-90% without ever having been on-site with the customer. This allows customers to gain a realistic understanding of how their WLAN environment would look and function."

_There are numerous "aha" moments and learning outcomes that customers can experience in connection with WLAN measurement and evaluation. Many businesses may not be aware of the potential within their WLAN networks. Through precise inventory and measurement of the WLAN environment, we can create a visual representation within no time using the floor plan, incorporating walls and obstacles, and virtually implementing and visualizing each access point. This allows the customer to get an idea of how their WLAN environment would look. Based on the accuracy of the provided information, we can create this visualization extremely accurately as "predictive." With detailed information such as CAD plans, we can even achieve predictive accuracy of up to 90% without having been personally on-site with the customer.

Of course, we need information about which business applications the customer intends to use with the WLAN. With this information, we can create a budget. Then, if necessary, we can go on-site to gain an even more accurate impression, create an exact quote, and further refine the planning. This approach enables customers to recognize the full potential of their WLAN and make targeted decisions.