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Chapter 2 - Wireless LAN Networking
This section provides background information on wireless LAN networking technology.
Transmission Rate (Transfer Rate)
The SMCWPCI-N2 provides various transmission (data) rate options for you to select. In most
networking scenarios, the factory default Auto setting proves the most efficient. This setting
allows your SMCWPCI-N2 to operate at the maximum transmission (data) rate. When the
communication quality drops below a certain level, the SMCWPCI-N2 automatically switches to
a lower transmission (data) rate. Transmission at lower data speeds is usually more reliable.
However, when the communication quality improves again, the SMCWPCI-N2 gradually
increases the transmission (data) rate again until it reaches the highest available transmission
rate.
Types of Wireless Networks
Wireless LAN networking works in either of the two modes: ad-hoc and infrastructure. In infra-
structure mode, wireless devices communicate to a wired LAN via access points. Each access
point and its wireless devices are known as a Basic Service Set (BSS). An Extended Service Set
(ESS) is two or more BSS in the same subnet. In ad hoc mode (also known as peer-to-peer
mode), wireless devices communicate with each other directly and do not use an access point.
This is an Independent BSS (IBSS).
To connect to a wired network within a coverage area using access points, set the SMCWPCI-N2
operation mode to Infrastructure (BSS). To set up an independent wireless workgroup without an
access point, use Ad-hoc (IBSS) mode.
A
-H
(IBSS) N
D
OC
ETWORK
Ad-hoc mode does not require an access point or a wired network. Two or more wireless stations
T
HE INFORMATION IN THIS SECTION IS FOR YOUR REFERENCE.
NETWORK SETTINGS AND PARTICULARLY SECURITY SETTTINGS SHOULD ONLY
BE DONE BY AN AUTHORIZED ADMINISTRATOR.
C
HANGING
7
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