summarize
Wifi6, formerly known as 802.11ax, is the sixth generation of wireless networking technology; Wifi5, formerly known as 802.11ac, is the fifth generation of wireless networking technology.Both Wifi6 and Wifi5 are802.11Wireless LAN communication standards.
comparison
Speed
The Wifi6 maximum transfer rate has been increased from the former's 3.5Gbps, to 9.6Gbps, a theoretical speed increase of nearly three times!

Frequency bands
Wifi5 only covers 5GHz, while Wifi6 covers 2.4/5GHz for complete coverage of low and high speed devices.

Modulation mode aspects
Wifi6 supports 1024-QAM(Quadrature Amplitude Modulation, Quadrature Amplitude Modulation) from Wifi5's 256 QAM single 8bit to single 10bit, data capacity increased by 25%, latency reduced by 75%, support for the increase in the number of devices by about 4 times, the relative speed of the increase of 40%.

brightest spot
The biggest difference between Wifi6 and Wifi5 is the introduction of multi-user transmission technology.OFDMAthat enables multiple users to share channel resources, thus improving spectrum utilization. Prior to Wifi6, data transmission used theOFDMtechnology, users are distinguished by different time segments.

Like a truck pulling goods, compared to Wifi5 where a truck can only pull one product (a single data stream occupies a single channel), Wifi6 can flexibly combine the data to fully improve channel utilization and transmission efficiency.
World Power Technology Related Products
Content review.