IEEE 802.11ax, marketed as Wi-Fi 6 by Wi-Fi Alliance, is one of the two Wi-Fi specifications standards, of IEEE 802.11, both expecting full deployment late 2019; the other is ay. They can be thought of as High Efficiency Wireless.
802.11ax is designed to operate in all band spectrums between 1 and 7 GHz when they become available in addition to the 2.4 and 5 GHz already existing. Devices presented at CES 2018 showed a top speed of 11 Gbit/s. For dense deployments, throughput speeds are 4× higher than IEEE 802.11ac, even though the nominal data rate is just 37% faster at most. Latency is also down 75%.
To improve spectrum efficient utilization, the new version introduces better power control methods to avoid interference with neighbouring networks, OFDMA modulation, higher order 1024-QAM modulation, and uplink direction added with the downlink of MIMO and MU-MIMO to further increase throughput, as well as dependability improvements of power consumption and security protocols such as Target Wake Time and WPA3.
|Data rate (in Mb/s)|
|20 MHz channels||40 MHz channels||80 MHz channels||160 MHz channels|
|1600 ns GI||800 ns GI||1600 ns GI||800 ns GI||1600 ns GI||800 ns GI||1600 ns GI||800 ns GI|