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ZyXEL G-162 User’s Guide
Wireless LAN Network 2-3
Figure 2-2 BSS Example
A series of overlapping BSS and a network medium, such as an Ethernet forms an Extended Service Set
(ESS) or infrastructure network. All communication is done through the AP, which relays data packets to
other wireless stations or devices connected to the wired network. Wireless stations can then access
resource, such as the printer, on the wired network.
Figure 2-3 Infrastructure Network Example
2.1.5 Roaming
In an infrastructure network, wireless stations are able to switch from one BSS to another as they move
between the coverage areas. During this period, the wireless stations maintain uninterrupted connection to
the network. This is roaming. As the wireless station moves from place to place, it is responsible for
choosing the most appropriate AP depending on the signal strength, network utilization or other factors.