Schedule a free product or technology session with Grandmetric Engineer
schedule a video call

Blog

IP and Mobile Trends and Education

 

Explained

09.2019

How to adjust data to your needs in Elastic

Elastic Stack allows to use multiple data source. On the ingest-layer you can use Logstash, any of the Beats or custom app, which feeds Elasticsearch with the data through the API. Each of them can be customized or configured to some extent. In this blog post we will present how elastic can be configured to support data in format we want.

07.2019

Visualising your tickets using Kibana

There are multiple platforms that help you with handling tickets. If you are starting your business, you might simply reply to those emails directly via your mail client, but it quickly becomes too hard to follow and handle all the issues. We chose the tool, from the same vendor, we were already using for different purpose for easy integration. It was great for following threads, tagging and grouping issues, taking notes and automating responses. In this tool we had access to basic statistics like ticket count or time graph with incoming tickets, but we were interested in more advanced stats, which could give us more insight into what is going on. That’s why we decided to integrate that tool with already used by us Elastic Stack.

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

5G health issues explained: What’s wrong with the “studies”?

The photon energy of electromagnetic radiation in the microwave spectrum, is by at least 5 orders of magnitude too low to cause any harm in living cells. The only possible impact is a heating effect, but the energy applied by a mobile phone is at least 4 orders of magnitude lower than that used by microwave ovens and can heat human tissues by less than half a degree. The situation around studies of health risks connected to mobile phone usage is discussed. Serious studies show that mobile network and mobile phone usage have no adverse effects on health.

Author: Kurt Behnke
04.2019

What is SD-WAN (SDWAN)

Specifically, the paradigm called data, control and management plane dissagregation and network automation. Here, you can read about paradigms and characteristics that the SDN idea brings. Dissagregation approach simplifies the process of building & maintaining something called network overlay. Overlay is an abstraction that SDWAN idea relies on (you will read more on dissagregation and overlay concepts below).

Author: Marcin Bialy
03.2019

Is this anything to worry about? 5G health issues explained

Each time a tower for a cellular network is built or planned to be built in a city or near a rural settlement, there is a new discussion about health issues of mobile phone or network radiation. It is about time to put things back into perspective. I’d like to deal with the reality of mobile network radiation in this post.

Author: Kurt Behnke
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.

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 […]

05.2018

Wi-Fi Standards Evolution

Introduction First Wi-Fi networks appeared in late 90s and many of us use them ever since. During these years we could observe significant increase of throughput, but what is important, it is not only due to the ISP providing better link. Wi-Fi standard also evolved to keep up with the higher throughputs. If there will […]

04.2018

What Multiple Access schemes are used in Wireless Systems?

Introduction Communication between devices is often discussed on link level, which means that the focus is on how two end points exchange information: what is the protocol, waveform, timing in sending messages etc. This however, does not take into account that there are other devices wanting to use the medium. Using the same medium by […]

Load more
Show all
 

Newsletter