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What Is Wifi 6? It Looks Amazing!

Nov 02-2020

What is WiFi 6, which has been mentioned at recent mobile phone conferences?

Everyone is familiar with WiFi, but IEEE 802.11B, its network protocol name, will make you being confusing.



What Is Wifi 6? It Looks Amazing!


This name difficult to understand and remember, has developed from 1999 to the present and has gone through five generations.


What Is Wifi 6? It Looks Amazing! 1


The naming rule was changed to: WiFi+Digital, which is more intuitive and more recognizable. When ordinary users buy routers, they only need to compare the WiFi number to know clearly.

WiFi 6's "popularity" is mainly due to the collective support of Android flagship devices this year, not only the models equipped with Snapdragon 865, but also Huawei P40 using the Kirin processor.

This year Android vendors have unanimously promoted WiFi 6 as a major selling point.


What is the strength of WiFi 6?

To understand how strong WiFi 6 is, we must understand the difference between WiFi 6 and the previous two generations first, with a comparison value table.


Chronicles

Wi-Fi 4

Wi-Fi 5

Wi-Fi 6

Protocol

802.11n

802.11ac

802.11ax

Wave 1

Wave 2

Year

2009

2013

2016

2018+

Operating frequency

2.4 GHz
5 GHz

5 GHz

2.4 GHz
5 GHz

Max Bandwidth

40 MHz

80 MHz

160 MHz

160 MHz

MCS range

0-7

0-9

0-11

Max modulation

64QAM

256QAM

1024QAM

Single stream 

bandwidth

150Mbps

433Mpcs

867Mbps

1201Mbps

Max Spatial Streams

4*4

8*8

8*8

MU-MIMO


down

up

down

OFDMA


up

down


Simply put:

1. Save antenna, two can be used for four

2. Single stream bandwidth increased by 40%

3. Support more devices at the same time

4. It can be used for some low-power smart devices (such as bracelets, smart furniture, etc.) to achieve unified management of equipment throughout the house


Now that we have 5G, what's the use of WiFi 6?

The standard answer is: 5G outside, WiFi 6 at home


What Is Wifi 6? It Looks Amazing! 2


The 5G network is fast, but there are also shortcomings!


Signal problem

For example, a major feature of the 5G network is the use of 24Ghz to 52Ghz UHF spectrum. The higher the frequency, the weaker the ability to penetrate walls. This is the same as the signal difference in many places when the 4G network was just rolled out.

WiFi 6, which is compatible with relatively low-frequency 2.4Ghz and 5Ghz spectrum, can perfectly solve this problem.


Charges problem

At present, 5G packages are generally more than RMB 100, and the data is relatively limited. It is impossible to achieve "open use". Only WiFi 6 that can connect to a wired fiber network can achieve lower fee.

It is inevitable that WiFi 6 will become the trend in the future, but like the current 5G, it is still on the verge of testing, and it will take a year or two for its true popularity.


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