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Today, 160MHz is the maximum bandwidth of Wi-Fi, which directly affects the maximum speed of Wi-Fi transmission. What is 160MHz? In the era of Wi-Fi 4 (802.11n), the maximum bandwidth was 40MHz, and the maximum single-stream bandwidth was 150Mbps. In the era of Wi-Fi 5 (802.11ac), the maximum bandwidth supports 80MHz and 160MHz, and the maximum single-stream bandwidth is 433Mbps and 867Mbps respectively. The maximum bandwidth of Wi-Fi 6 (802.11ax) supports 160MHz, and the maximum single-stream bandwidth is 1200Mbps.
The terminal and router must be matched
As can be seen from the above, the maximum bandwidth supported by Wi-Fi 6 technology is 160MHz.
However, if you want to achieve high-speed data transmission at 160MHz, the terminal in the user's hand must also support 160MHz bandwidth.
If both the router and the terminal support 160MHz, the maximum wireless transmission speed can reach 2400Mbps.
However, the terminals currently on the market (smartphones, tablets, and laptops) only support up to 2t2r 80Mhz, so the maximum wireless transmission rate is only 1200Mbps.
Take the iPhone 11 series as an example. Although it supports Wi-Fi 6, the maximum wireless speed is only 1200MBps.
Do all users need 160MHz?
For manufacturers, there are very few users who are proficient in Wi-Fi technology, so it is sufficient to meet the needs of most users for wireless routers.
The Huawei AX3 router released later uses 160MHz as its selling point. At the same time, its latest P40 series mobile phones also support Wi-Fi 6 160MHz frequency band. The combination of the two can achieve a maximum transmission rate of 2400Mbps.
And since the terminals released by Huawei earlier also support Wi-Fi 5 160MHz, if users have these terminals, using the AX3 router will also have a faster transmission rate than ordinary routers.
160MHz has its pros and cons
Qualcomm believes that "in the 5GHz frequency band, there are very few 160MHz channels, and China has only one. In China, part of this channel may span the dynamic frequency selection (DFS) channel. DFS means that there are many weather radars in the city, and the frequency band of these radars is also 5GHz. Therefore, when using DFS channels, if radar is detected, it must be avoided, and the channel cannot be used for a period of time. On a channel, if the span is too wide, it will cause great interference to both parties."
Another issue is the speed of external broadband. Currently, on the 5GHz frequency band of Wi-Fi 5, the actual tested transmission rate of 80MHz bandwidth is as high as over 500Mbps. The home broadband of most domestic users is only at the level of 100Mbps+, and there are relatively few users of 500MBps and 1000MBps home broadband.
Therefore, the pain point for domestic users is not the Wi-Fi transmission rate, but the lag or disconnection problems caused by weak Wi-Fi signals.
Wi-Fi 6's 160MHz is user-selectable
I can understand the intention of the manufacturer to "castrate" the 160MHz bandwidth of Wi-Fi 6. However, since the hardware supports it, I hope it will be left to the user to choose whether to use 160MHz.
Just build a "turn on 160MHz" switch into the system, let users experience the difference with or without 160MHz, and then let them vote with their hands.
However, the essence of some entry-level Wi-Fi 6 wireless routers is to allow users to try out the new technology and quickly popularize it, so it is certain that support for 160MHz will be removed.
Wi-Fi 6 is the hottest topic right now, and all new routers and terminal products support Wi-Fi 6. However, when purchasing, consumers will find that some products support 160MHz, while others do not. The 160MHz frequency band is not a must for Wi-Fi 6, but only an option.
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提升卡
变色卡
千斤顶
Nice sharing, thank you.
