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chenjunhust 发表于 2020-8-14 22:50 
Wi-Fi 6 means 802.11ax ,使用5g频段
Wi-Fi 5 means 802.11ac, 使用5g频段
Wi-Fi 4 means 802. 11n, 使用2. 4g频段
802.11n
https://en.wikipedia.org/wiki/IEEE_802.11#802.11n
802.11n is an amendment that improves upon the previous 802.11 standards, that had the first draft of certification published in 2006. The 802.11n standard was retroactively labelled as Wi-Fi 4 by the Wi-Fi Alliance.[37][38] The standard added support for multiple-input multiple-output antennas (MIMO). 802.11n operates on both the 2.4 GHz and the 5 GHz bands. Support for 5 GHz bands is optional. Its net data rate ranges from 54 Mbit/s to 600 Mbit/s. The IEEE has approved the amendment, and it was published in October 2009.[39][40] Prior to the final ratification, enterprises were already migrating to 802.11n networks based on the Wi-Fi Alliance's certification of products conforming to a 2007 draft of the 802.11n proposal. |
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