Thomas Kunz
Systems and Computer Engineering
162
802.11 Infrastructure Network
nStation (STA)
–terminal with access mechanisms to the wireless medium and radio contact to the access point
nBasic Service Set (BSS)
–group of stations using the same radio frequency
nAccess Point
–station integrated into the wireless LAN and the distribution system
nPortal
–bridge to other (wired) networks
nDistribution System
–interconnection network to form one logical network (EES: Extended Service Set) based
on several BSS
on several BSS
Distribution System
Portal
802.x LAN
Access
Point
802.11 LAN
BSS2
802.11 LAN
BSS1
Access
Point
STA1
STA2
STA3
ESS