Network Configuration and Planning
19
Infrastructure Wireless LAN
The WLAN Cardbus can also provide wireless workstations with access to a wired LAN.
An integrated wired and wireless LAN is called an Infrastructure configuration. A Basic
Service Set (BSS) consists of a group of wireless PC users, and an access point that is
directly connected to the wired LAN. Each wireless PC in this BSS can talk to any
computer in its wireless group via a radio link, or access other computers or network
resources in the wired LAN infrastructure via the access point.
The infrastructure configuration not only extends the accessibility of wireless PCs to the
wired LAN, but also extends the effective wireless transmission range for wireless PCs by
passing their signal through one or more access points.
A wireless infrastructure can be used for access to a central database, or for connection
between mobile workers, as shown in the following figure.
File
Server
Switch
Desktop PC
Access Point
Wired LAN Extension
to Wireless Adapters
PC with Wireless
PC I Adapter
Notebook with Wireless
PC Card Adapter
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