Compared with 802.11ac, 802.11ax offers a new spatial multiplexing technology that can quickly identify andavoid air interface conflicts. At the same time, it can more effectively identify interference sianals and reduce mutual noise through dynamic idle channel estimation and dynamic power control.

The interference thus greatly improves the wireless experience in high-traffic scenarios such as stations, airports, parks and stadiums. The average throughput is said to be up to 4 times that of 802.11ac. The higher level modulation and coding scheme provides 1024QAM. In 802.11ac, the most higher coding and modulation efficiency compared to 256QAM. The association rate of each 80M bandwidth spatial stream is increased from 433Mbps to 600.4Mbps. The theoretical maximum association rate (160M bandwidth, 8 spatial streams) is about 9.6Gbps from 6.9Gbps increased to, and the highest association rate increased by about 40%. 802.11aximproves air interface efficiency, reduces application latency, and reduces user conflict prevention,respectively.lt adopts uplink and downlink MU-MIMO and uplink and downlink OFDMA technologies to realizemulti-user simultaneous transmission with multiple spatial streams and multiple subcarriers. lt provides better transmission guarantee for multi-user scenarios.