Very important optimizations have been made in the Wi-Fi 6 architecture, which has increased the speed and quality of communication by 40%. These are as follow:
There is one Spatial Stream for each WiFi Router ‘s antenna, if your router has 4 antennas , you have 4 spatial streams . Technically, the spatial streams can be used to increase the throughput or to increase the quality.
|802.11 Standard||Maximum Number of Spatial Streams|
|3.2 us||12.8 us|
0.4 us (Short GI)
3.2 us (4*GI)
The encoding scheme is the modulation technology, Means the number of bits that can be carried in a symbol.
|802.11 Standard||Higher-Order Modulation||Number of Bits in a Symbol|
Carriers are similar to symbols but in the frequency domain. One subcarrier carries one symbol, and the number of subcarriers varies according to the modulation mode and frequency bandwidth.
Number of Subcarriers in each channel width and standard :
|160Mhz||2 x 234||2 x 980||2 x 996|
In conclusion , maximum data rate of 802.11ac standard is 433Mbps and maximum data rate of 802.11ax is 600Mbps, with 1 Spatial Stream at HT80.
WiFi 6 supports channel widths of up to 160 MHz, allowing for greater bandwidth and faster data transfer rates. It also includes a feature called Orthogonal Frequency Division Multiple Access (OFDMA), which divides each channel into smaller sub-channels, allowing multiple devices to transmit and receive data simultaneously.
WiFi 6 employs both Multi-User Multiple Input Multiple Output (MU-MIMO) and Single-User Multiple Input Multiple Output (SU-MIMO) technologies. MU-MIMO enables multiple devices to transmit and receive data simultaneously, while SU-MIMO allows a single device to utilize multiple antennas for better signal quality and coverage.
WiFi 6 operates in both the 2.4 GHz and 5 GHz frequency bands, just like its predecessors (WiFi 5, WiFi 4). However, it introduces additional frequency bands for better performance, including 1.2 GHz, 6 GHz, and 60 GHz.
WiFi 6 offers significantly higher data rates compared to previous generations. It can achieve peak data rates of up to 9.6 Gbps (gigabits per second) by utilizing multiple streams and wider channel widths.
TWT is a new feature introduced in WiFi 6 that allows devices to negotiate and schedule their power-saving periods. This helps reduce energy consumption and extends battery life, especially for devices such as IoT sensors and smart devices.
BSS coloring enables devices operating in the WiFi6 standard to differentiate between signals from their own network and signals from other networks. This feature increases the efficiency and capacity of your network.
WiFi 6 is designed to be backward compatible with older WiFi standards, ensuring that devices using previous generations (WiFi 5, WiFi 4) can still connect to a WiFi 6 router. However, the full benefits of WiFi 6 can only be realized when both the router and the device support the new standard.
WiFi 6 offers faster speeds, increased capacity, better performance in crowded environments, and improved power efficiency compared to previous WiFi standards. It is expected to provide a more seamless and reliable wireless experience for users across a wide range of devices.