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What is and how Wi-Fi 7 works

At the moment, in the world of the internet, we are preparing for the wifi 6 standard with the production of devices that support this type of connection and the Wi-Fi Alliance that launched the official Wi-Fi 6 certification program.

Despite this, for technicians and engineers it doesn’t seem to be enough. A subsequent step, Wi-Fi 7, is at the door. It will be an even higher connection standard, which will offer maximum speeds of up to 30 gigabits per second and numerous improvements that will allow the connection to be more stable.

All the connection standards that have followed, from Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac) also the transition to Wi-Fi 6 (802.11ax) will be absolutely gradual. The same will happen with Wi-Fi 7 (802.11be), which will represent a step forward compared to the first one.

How and when?

Wi-Fi 7 will become operational by 2024, as infrastructure will also have to adapt. To date, Wi-Fi 5 uses two types of frequencies, 2.4 GHz and 5 GHz. The first has the characteristic of being more extensive, of better crossing the walls of buildings, while the second has a narrower range but in the short haul a more powerful signal.

Going step by step, a third frequency will arrive: 6 GHz. This type of frequency will also be used by mobile telephone operators for data transmissions such as 5G.

Subsequently, from about 2022, the so-called “Uplink Multiple User Multiple-Input Multiple-Output” (UL MU-MIMO) will arrive. This name encompasses the evolution of technology that sends data packets over multiple paths via antennas to maximize transmission speed.

Only from 2024 will the technologies that will allow the Wi-Fi 7 standard to be operational, including the CMU-MIMO, be effectively available. In practice, different routers will be able to communicate with each other by collaborating to transmit data together following the MIMO standard.

With Wi-Fi 6, up to 8 antennas can work together, with 7 up to 16. The coverage and transmission speed will be significantly increased, thus being able to exploit the transmission power of the antennas of several routers connected simultaneously.

The news does not end here, in fact, processes are being studied that could allow the use of multiple frequencies at the same time, making it possible to add two (or three also, it seems) frequencies to maximize connection performance.

 

Source: tuttotech.net fastweb.it