Wifi Created in 1999, it is the main communications network, with more than 13 billion active devices worldwide.
Wi-Fi or Wifi is a local network which was launched in 1999, it uses radio waves in order to link together, wirelessly, many computer devices in order to facilitate the transmission of data.
The term is an abbreviation of Wireless Fidelity, translated into French by fidelity without wire. The purpose or main role of Wifi is to connect devices to high speed links. It is more particularly found in the field of Internet with nomadic devices connected to the Wifi network rather than by an Ethernet cable.
Add to these advantages, Wifi is often the subject of several criticisms.
Many people highlight the privacy issues associated with using a WiFi network. It should be noted that in other countries in Europe or in the world, Wifi is also known under the generic term WLAN for Wireless Local Area Network.
The characteristics of Wifi 6
Wifi 6, which is based on the IEEE 802.11 ax standard, is considered the next generation of wireless connection, which follows on from the 802.11ac standard launched in 2014.
It was launched in 2019 to address latency or delay issues when a large number of objects are connected. The main advantage is to offer high speed and latency of less than 1 millisecond. Data transfer speeds will be 4 times faster than the previous one.
These advantages are not the only ones of Wifi 6. Wifi also offers reinforced security which is based on the WPA3 protocol.
Wifi 6 is not only an evolution of Wifi 5, but rather it is a new concept.
Role of Wifi 6 for IoT
- Wifi 6 brings benefits comparable to those of 5G.
- Wifi 6 aims to increase network performance for a large number of objects. But this new generation makes it possible to reduce the consumption of the batteries of connected objects. The goal of the IoT is to allow companies to forget about the sensors, but Wifi 5 was restrictive by consuming too much energy, The sensor only becomes active when it receives a data transmission, then goes back to sleep . This action is possible thanks to the Target Wake Time function. Another particularity of Wifi 6 is that of allocating resources according to the needs of devices with OFDMA technology, obviously also increasing the efficiency of the network.
- Wifi is the cheapest communication technology in the IoT, it allows us to pool different services, so it is a very interesting choice from an economic perspective.
The Wi-Fi Alliance
The Wi-Fi Alliance was created in 2000 to certify suitable and efficient Wi-Fi connectivity solutions. It brings together more than 800 members around the world.