TOP-5 reasons of switching to Wi-Fi 6

OFDMA (Orthogonal Frequency Division Multiple Access)

OFDMA — is a multi-user version of OFDM digital modulation. Wi-Fi 6 (802.11ax) OFDMA is one of the most important features for improving network performance.

Both OFDM and OFDMA divide the data being transmitted into several small packets to simply move small bites of information. In addition, OFDMA divides the channel into smaller frequency subcarriers. As a result, small packets can be transmitted to multiple devices simultaneously. Packets that have arrived continue to transmit and do not need to wait for other packets. In OFDMA downlink, the router can use different groups of packets for sending to different clients, and the delay can be controlled. This flexible and decentralised communication method increases the network speed and efficiency. 

BSS Coloring (Basic Service Set Coloring)

Looking back at previous Wi-Fi standards, such as 802.11n (Wi-Fi 4) and 802.11ac (Wi-Fi 5) helps better understand Wi-Fi 6. The predecessors worked on the same principle: when you switch on the Wi-Fi on a device (for example, a laptop or smartphone), it scans the radio frequencies of the channel on which the Wi-Fi router operates. If this channel already transmits data from a neighbouring network, you will have to wait until the channel is free for data transmission again. This reduces the data transfer speed and increases the waiting time.

BSS Coloring in Wi-Fi 6 (802.11ax) allows marking each data packet with a unique identifier or colour. This means that data can be transmitted simultaneously on the same channel for different clients on different networks. Thanks to the colouring, each client receives only the intended packets. 

MU-MIMO UL/DL

The MU-MIMO technology allows a single router to communicate with multiple devices simultaneously. Specifically, Wi-Fi 5 MU-MIMO technology allows the router to communicate with four devices at once and only supports MU-MIMO downlink. With Wi-Fi 6 MU-MIMO technology, which has better performance, the router can communicate with eight devices at the same time and supports both Uplink and downlink MU-MIMO.  
Here's an analogy: four lanes on a road are expanded to eight lanes, and vehicles (devices) no longer queue up and move through the same exit, but can move simultaneously and efficiently by exiting or entering different lanes. 

Energy savings with TWT (Target Wake Time)

TWT allows the AP to schedule a series of wake-up periods at scheduled intervals for the station to exchange data. This allows the station to sleep longer and reduces power consumption. This is a key capability for IoT devices. 

1024 – QAM modulation

Modulation techniques are used to optimise bandwidth and range. The number of points in the modulation constellation determines the number of bits transmitted with each symbol. 802.11ac uses 256 QAM, which transmits 8 bits/symbol. 802.11ax supports 1024 QAM, using 10 bits/symbol – a 25% increase in throughput. 

New framework formats 

Modified frame formats provide High Efficiency (HE) and legacy information to support new advanced capabilities, as well as information needed to support legacy stations and backward compatibility.