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An Optimization of Network Performance in IEEE 802.11ax Dense Networks

Marek Natkaniec Mateusz Kras
International Journal of Electronics and Telecommunications | 2023 | vol. 69 | No 1 | 169-176 | DOI: 10.24425/ijet.2023.144347
Keywords dense networks IEEE 802.11ax network optimization BSS coloring
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Abstract

The paper focuses on the optimization of IEEE 802.11ax dense networks. The results were obtained with the use of the NS-3 simulator. Various network topologies were analyzed and compared. The advantage of using MSDU and MPDU aggregations in a dense network environment was shown. The process of improving the network performance for changes in the transmitter power value, CCA Threshold, and antenna gain was presented. The positive influence of BSS coloring mechanism on overal network efficiency was revealed. The influence of receiver sensitivity on network performance was determined.
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Authors and Affiliations

Marek Natkaniec
1
Mateusz Kras
2
  1. Faculty of Computer Science, Electronics and Telecommunications, Institute of Telecommunications, AGH University of Science and Technology, Poland
  2. AGH University of Science and Technology, Poland

An IEEE 802.11 MAC Layer Covert Channel Based On Supported Rates

Geovani Teca Marek Natkaniec
International Journal of Electronics and Telecommunications | 2023 | vol. 69 | No 2 | 293-299 | DOI: 10.24425/ijet.2023.144364
Keywords steganography covert channel IEEE 802.11 networks performance evaluation
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Abstract

Wireless Local Area Networks present several vulnerabilities that are exploited, and as a result, numerous attacks have been developed and used against them. Although countermeasures to detect and eliminate such threats have been created throughout the years, few methods exist to prevent the attacks. IEEE 802.11 covert channels could be considered a candidate to prevent Wi-Fi attacks since they allow secret communication between the client station and the access point without establishing an association. They can be implemented in frames that attackers do not target. This paper presents a new covert channel that prevents Wi-Fi attacks. We also describe metrics, and discuss the performance results of the proposed solution. We show that the new protocol is able to achieve high efficiency of operation.
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Authors and Affiliations

Geovani Teca
1
Marek Natkaniec
1
  1. Faculty of Computer Science, Electronics and Telecommunications, Institute of Telecommunications, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Krakow, Poland

An analysis of BSS coloring mechanism in IEEE 802.11ax dense networks

Marek Natkaniec Natalia Bieryt
International Journal of Electronics and Telecommunications | 2022 | vol. 68 | No 4 | 855-862 | DOI: 10.24425/ijet.2022.143894
Keywords BSS coloring dense networks IEEE 802.11ax QoS
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Abstract

The paper presents an analysis of BSS coloring scheme defined in IEEE 802.11ax standard. The efficiency of dense networks for different scenarios was analyzed and compared. This analysis covers various topologies and work configurations through the use of multiple parameters of the PHY and MAC layers. A positive impact of the coloring mechanism on the QoS was observed. The study also analyzed the impact of the RTS/CTS mechanism on the obtained network performance and adequate prioritization of various traffic classes. It was shown that the proper selection of the coloring mechanism parameters in the IEEE 802.11ax standard has a strong impact on QoS and the performance of dense networks.
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Authors and Affiliations

Marek Natkaniec
1
Natalia Bieryt
1
  1. Faculty of Computer Science, Electronics and Telecommunications, Institute of Telecommunications, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Kraków

Background Traffic Simulator - The Tool for WLAN Background Traffic Generation in ns-3 Environment

Szymon Stryczek Mikołaj Gwiazdowicz Marek Natkaniec
International Journal of Electronics and Telecommunications | 2023 | vol. 69 | No 1 | 177-183 | DOI: 10.24425/ijet.2023.144348
Keywords background traffic ns-3 simulator traffic generation WLAN
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Abstract

In the paper, the BTS (Background Traffic Simulator) tool is proposed to capture network traffic and then reproduce it in a simulations using the ns-3 simulator extension module. This new method of generating background traffic allows for repetitive testing of simulation scenarios under real network conditions. The authors described the differences between the previously available methods and the proposed solution. The operation of all the most important elements of the proposed tool has been described. The influence of the generated background traffic on the simulation scenario was presented as well as the results of the operation.
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Authors and Affiliations

Szymon Stryczek
1
Mikołaj Gwiazdowicz
1
Marek Natkaniec
1
  1. Faculty of Computer Science, Electronics and Telecommunications, Institute of Telecommunications, AGH University of Science and Technology, Poland

A Performance Analysis of IEEE 802.11ax Networks

Marek Natkaniec Łukasz Prasnal Michał Szymakowski
International Journal of Electronics and Telecommunications | 2020 | vol. 66 | No 1 | 225-230 | DOI: 10.24425/ijet.2020.131867
Keywords 802.11ax dense networks performance analysis
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Abstract

The paper is focused on the forthcoming IEEE 802.11ax standard and its influence on Wi-Fi networks performance. The most important features dedicated to improve transmission effectiveness are presented. Furthermore, the simulation results of a new transmission modes are described. The comparison with the legacy IEEE 802.11n/ac standards shows that even partial implementation of a new standard should bring significant throughput improvements.

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Authors and Affiliations

Marek Natkaniec
Łukasz Prasnal
Michał Szymakowski

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