BySteve Lowry 2018-07-31 3920
As a matter of fact, WiFi is a trademark of WLANA (Wireless Local Area Network Alliance), which guarantees the cooperation of this trademark goods, but have nothing to do with the standard itself.
Since WiFi mainly uses 802.11b protocol, people are gradually accustomed to calling 802.11b protocol with WiFi. From the inclusion relation, WiFi is a standard of WLAN, and WiFi is included in WLAN, belonging to a new WLAN technology.
We can distinguish from the coverage range. In general, WiFi covers in a small range, just like Bluetooth, it will can not receive the network far away from the transmitter. While for WLAN, its coverage range is much wider, mainly to see whether the operator set up WLAN in this region.
WiFi coverage is up to about 300 feet (about 90 meters), while WLAN coverage maximum (plus antenna) reaches up to 5km.
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