Wi-Fi
"" (wireless) , . . , . , "" "" (radio) "" (RF - radio frequency). , 3 300 . "" (, , , . .). "" , , , , . .
(. 1.1): WWAN (Wireless Wide Area Network), WLAN (Wireless Local Area Network) WPAN (Wireless Personal Area Network)
1.1 - ,
WLAN WPAN, (BWA - Broadband Wireless Access) . (. 1.2) - . WLAN WPAN 2,4 5 , . . , . BWA (Broadband Wireless Access) , ( 2 66 ).
1.2 -
WLAN.
(WLAN) . (hot spots) , , , (, ).
IEEE 802.11. Wi-Fi (Wireless Fidelity), Wi-Fi, , Wi-Fi .
1990 . IEEE 802 (Institute of Electrical and Electronic Engineers). 802.11. , 2.4 1 2 /. , 1997 . 802.11.
IEEE 802.11 WLAN . . , .
C IEEE 802.11