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Wireless

06.2020

Wi-Fi 6: Q&A

What is Wi-Fi 6 (IEEE802.11ax)? How does it compare to Wi-Fi 5 (IEEE802.11ac)? Will older phones connect to Wi-Fi 6? The post combines the most frequently asked questions about Wi-Fi 6.

01.2020

Wi-Fi issues: site-surveys and troubleshooting

Recently, we’ve been doing numerous site surveys and verification of Wi-Fi deployments in offices with more than 50APs per office in a managed setup (meaning that the APs are under the supervision of a wireless controller). In this post, I’d like to sketch an overview of the encountered issues and improvement suggestions.

08.2019

Using Kibana for custom monitoring in dense Wi-Fi

We’ve built a high density and high capacity network. In order to properly operate such network, we designed a custom monitoring and analytics solution based on Elastic Stack and MQTTbeat receiving the measurements from all 494 IoT gateways (i.e. 494 Wi-Fi APs) through an MQTT broker. In this post I’m sheding some light on the different aspects of the solution and custom dashboards.

06.2019

Why Wi-Fi 6 (IEEE802.11ax) will be different than previous Wi-Fis?

The AP schedules the transmission according to the actual needs, and nobody wastes time on waiting and on collision. So, we end-up having the system that: is more robust towards low latency services; is more spectrally efficient; allows for actually use some QoS profiles; and coordinates the use of spectrum.

05.2019

IoT System: Monitoring and Management

IoT System consists of multiple devices and we expect each of them to work flawlessly. There are many reasons why the service might not work in such complex environment. Starting from physical damage of the device, power outage, up to network failure or software bug. Whatever the issue is, we want to be aware of it as soon as possible.

01.2019

Wi-Fi Generations – new naming convention for WiFi

Wi-Fi Generations affect not only new releases, but also refer to the past amendments. Currently Wi-Fi Alliance has defined 6 generations. Each step is significant improvement in network performance and security. No more minor version changes that can cause only confusion.

09.2018

Step in another direction in Wi-Fi? IEEE 802.11ax (High Efficiency WLAN)

The 802.11ax brings important features, focusing on network capacity, latency and range. High data rates are still in the picture, but rather in the background. Introducing OFDMA and using MU-MIMO allows AP to schedule data for multiple users simultaneously. This way, latency can be greatly decreased. With the new colors of the channels, frequencies can be spatially reused.

08.2018

Wi-Fi Radio Configuration & Measurements

This post discusses selected practical aspects of Wi-Fi systems including: explanation of some parameters and factors that the network performance is impacted by; showing how to configure some of the parameters them using CISCO Wireless LAN Controller; presenting simulated scenarios to show some examples of radio measurements.

07.2018

How we ended up in WPA3? – Wi-Fi Security Evolution

Introduction to Wi-Fi Security Distributing data using wireless medium means that anyone can capture the signal. There is no boundary, like in case of cable communication, which prevents unwanted access. This means we must take other security measures. In this blogpost we will review current algorithms providing Wi-Fi security and we will take a sneak […]

07.2018

5G Standards & Spectrum Focus Day – Overview

Our team – Marcin Dryjański, Marcin Biały and my humble person – went on a trip to London on June 11, where at the invitation of Knect365 (Informa Business), we participated in the Tech XLR8 fair in London. At this event, as part of the 5G World Series, Marcin Dryjanski had the pleasure to chair the 5G Standards & Spectrum Focus Day workshop.

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