MLO (Multi-Link Operation): This feature is a real game changer. Previous WiFi standards allowed routers and devices to switch between the available frequency bands (2.4 GHz, 5 GHz, and most recently 6 GHz), but not to use them simultaneously. MLO makes this possible. This improves both data throughput and reliability. WiFi 7 connections therefore become faster and more stable.
Doubled channel width: A major increase in data capacity comes from the wider channels used in the 6 GHz frequency band. While WiFi 6 uses only 160 MHz per channel, WiFi 7 supports an impressive 320 MHz on three* channels. This doubled channel width enables more data to be transmitted at once. Bandwidth-hungry applications such as 4K streaming and networks in densely populated areas particularly benefit from this. *Due to regulatory restrictions, only one of these channels is available in Europe.
4096-QAM modulation (4K-QAM): QAM (Quadrature Amplitude Modulation) makes it possible to transmit data via radio waves in the first place. With WiFi 7, this technology is significantly improved. With 4K-QAM, WiFi-7 connections can transmit 12 bits per signal, resulting in a performance increase of around 20% at the same channel width. Put simply: WiFi 7 embeds more data into each signal.
Preamble Puncturing: If a channel is disturbed (for example by a neighboring network or weather radar), it often could not be used at all. Preamble Puncturing detects interference and uses the remaining usable portion of the channel. This increases the availability of wide channels and improves connection stability in congested environments.
In short: WiFi 7 is potentially faster and more stable than WiFi 6, transmits more data, and can reduce latency. Actual performance, as always with WLAN connections, depends on local conditions and the technical components involved. However, in several key areas, WiFi 7 represents a clear step forward.