Smartphone, tablet, and PC manufacturers have already started positioning themselves in relation to Wi-Fi 6. The first cell phone with this support was released in 2019, and since then, numerous manufacturers have joined this trend. Sooner or later the technology will replace previous versions in the terminal market and company head offices will have to adapt to this technological shift to...
The Wi-Fi 6 technology set out in the 802.11ax High Efficiency (HE) standard is the natural successor of the wireless Wi-Fi 5 technology or 802.11ac standard, known as Very High Throughput (VHT). This new implementation has been designed to work in high user density environments (for instance, a stadium, an airport, or branch offices with many Wi-Fi devices). Other characteristics are latency...
Wireless networks include the concept of roaming. This word refers to a station’s movement within a wireless network. This is possible in Wi-Fi environments when multiple Access Points (APs) provide a wireless network service on the same Wi-Fi network. Mobile stations switch AP when they experience a weak signal. The decision to roam to another AP with better signal quality in the same network...
Today, all machines need to communicate with each other. The fact that they are heavier than other technologies is the reason why the Internet has become so fundamental in our everyday lives. This would never have been possible, however, without wireless communication, that is, devices capable of connecting to each other using electromagnetic waves in the air. In the field of Wi-Fi environments,...
Following on from a previous article on DSL and its scientific bases, I now want to review the fundamentals of another technology: radio. As with a DSL, the ability to transmit data in any radio communications system – from the very first Marconi experiments to 5G networks – is bound by Shannon’s equation, based on the channel’s bandwidth and signal-to-noise ratio. In radio, we also have another...
The nature of electromagnetic waves is such that anyone in a wireless network can receive the data sent over the air. With high-gain antennas, it is possible to listen in on the data that passes through an office from outside the building. That is why, right from the outset, a great deal of importance has been attached to wireless network security. By 1999, the first version of the IEEE 802.11...
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