standard teorica pratica Frequency 802.11 2 Mbps 1Mbps 2.4Ghz 802.11a 54 24Mbps 5.5Ghz 802.11b 11 Mbps 5Mbps 2.4Ghz 802.11g 54 24Mbps 2.4Ghz 802.11n 100Mbps o + 802.11a - 54 Mbps standard, 5 GHz signaling (ratified 1999) 802.11b - 11 Mbps standard, 2.4 GHz signaling (1999) 802.11c - operation of bridge connections (moved to 802.1) 802.11d - worldwide compliance with regulations for use of wireless signal spectrum (2001) 802.11e - Quality of Service (QoS) support (not yet ratified) 802.11f - protocol for communication between access points to support roaming clients (2003) 802.11g - 54 Mbps standard, 2.4 GHz signaling (2003) 802.11h - enhanced version of 802.11a to support European regulatory requirements (2003) 802.11i - security improvements for the 802.11 family (2004) 802.11j - enhancements to 5 GHz signaling to support Japan regulatory requirements (2004) 802.11k - WLAN system management (in progress) 802.11l - skipped to avoid confusion with 802.11i 802.11m - maintenance of 802.11 family documentation 802.11n - future 100+ Mbps standard (in progress)