wireless networks

This article addresses secure information transmission using LoRa technology in peer-to-peer mode, without relying on LoRaWAN. Such communication is vital in areas lacking centralized network infrastructure, such as rural, remote, emergency, or combat situations, where confidential data must be exchanged over several kilometers. The study explores methods for secure data transmission with LoRa devices, focusing on improving efficiency by optimizing encoding for higher data rates within limited byte sizes.

The article presents a system of remote control and management of car functions, developed using innovative technologies of the Internet of Things (IoT) and wireless networks. During the development of the system, technologies such as sensors for monitoring the technical condition of the car, a website for remote access, and microcontrollers for data processing and remote control of the car's functions were used.

With the constant development of information technology and the growing threat of cyber attacks, the security of Wi-Fi wireless networks is of particular relevance. This article aims to provide an in-depth analysis of modern Wi-Fi security protocols such as WPA2, WPA3, and OWE, focusing on their strengths and weaknesses in securing the network against the most common types of attacks.

Проведено порівняльний аналіз пропускної здатності двох схем доступу безпровідних мереж DCF та EDCA в умовах насиченої завантаженості.

This paper is devoted to the comparison analysis of wireless networks access schemes DCF and EDCA in case of saturation condition.

In this paper an adaptive ACs (Access Categories) number adjusting algorithm for the EDCA (Enhanced Distributed Channel Access) scheme is proposed. It has been shown that the total performance of the wireless network can be enhanced especially under the highly loaded network conditions. It has been introduced as a result of collecting a data buffer and the switching mechanism for AC queues. The simulation results demonstrate that the proposed adaptive ACs number adjusting algorithm for the EDCA scheme outperforms significantly the 802.11 specification.