Chenbro Wireless LAN PC Card 11Mbps - Manual (Page 8)

Roaming
Infrastructure mode also supports roaming capabilities for mobile users. More than one BSS
can be configured as an Extended Service Set (ESS). The continuous network allows users to roam
freely within an ESS. All WLAN PCs and Access Point within one ESS must be configured with the
same ESS ID.
Before enabling an ESS with roaming capability, it is recommended to select a feasible radio
channel and optimum Access Point position. Proper Access Point positioning combined with a clear
radio signal will greatly enhance performance.
Fig 2-4 Roaming in an Extended Service Set (ESS)
Access Point 1
Access Point 2
Notebook I
Notebook I
BSS1 BSS2
ESS
USB WLAN Adapter
USB WLAN Adapter
Server
Desktop PC
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