Extended Service Set
is the definition set forth in the IEEE 802.11
-1999 standard. An ESS
is a set of one or more interconnected BSSs
and integrated local area networks (LANs
) that appear as a single BSS to the logical link control
layer at any station associated with one of those BSSs.
The set of interconnected BSSs must have a common network name or SSID. They can work on the same channel, or work on different channels to boost aggregate throughput.