What are the relationship and difference between WLAN and Wi-Fi

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Wi-Fi is a trademark of the Wireless Local Area Networks Alliance (WLANA). It is actually not a standard and only ensures that products using this trademark can interoperate with each other. As most Wi-Fi products use the IEEE 802.11b standard, Wi-Fi usually refers to 802.11b. Wi-Fi is a new technology that uses the WLAN protocol.

Wi-Fi can provide wireless coverage in an area with a radius of up to 90 m (300 inches), while the WLAN can provide wireless coverage in an area with a radius 5 km (with antennas used). The biggest advantage of Wi-Fi is its high transmission speed (up to 11 Mbit/s). Wi-Fi is a short-distance wireless transmission technology applicable to offices and households.

Other related questions:
What WLAN standards do the Wi-Fi interfaces on the WLAN subcard support
Wi-Fi interfaces on the WLAN subcard comply with IEEE 802.11n, 802.11g, and 802.11b, and provide a maximum transmission rate of 300 Mbit/s.

What is the Wi-Fi capability of the TE20?
Wi-Fi capability: dual frequency bands, that is, 2.4 GHz and 5 GHz The TE20 (5X) and TE20 (12X) has a built-in Wi-Fi module, while the TE20 (5X-NoWIFI) does not.

What are the differences between the Global Control Permission and Wi-Fi Multimedia (WMM) function
The WMM switch is used to control the whole WMM function for the AP. The WMM function includes global control permission switch and EDCA parameters. The global control permission switch controls whether the STAs that do not support WMM can connect to a WMM-enabled AP.

What standards does the Wi-Fi function of the WLAN subcard comply with
The Wi-Fi function of the WLAN subcard complies with the following standards: ETS 300-328 (Europe), and FCC 15.247 (US), and No. 353 of China's Radio Management Committee.

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