User's Manual

2-4
Realtek RTL8187 Wireless LAN USB 2.0 Adapter
User Guide
2.4.1 Ad-Hoc mode
Ad-Hoc wireless networks bring together
workstations and computers to act as
servers to all other users on the network
without complex infrastructure, setup or
administration. Users on the network can
share files, printers and access the internet
with a shared modem. When in ad hoc
mode, the Azure Wave AW-GA800 Wireless
LAN USB 2.0 Adapter connects to another
wireless device within its effective range
and communicates with each other in the
same LAN workgroup. Select this
configuration when no access point is present in your wireless network.
2.4.2 Infrastructure mode
The biggest difference between
infrastructure mode and ad-hoc mode is
that it
includes an access point. In
infrastructure mode, an access point
establishes the network that provides
wireless links in the validating range for
clients to communicate with each other or
with a wired network to the internet. On an
infrastructure network, the access point
may manage the bandwidth to maximize utilization. Infrastructure networking has the following
advantages over ad-hoc networking:
z Range Extension
Each wireless LAN enabled computer within the range of the access point can communicate
with other wireless LAN enabled computers
within the valid range of signal from the access
point.
z Roaming
A wireless LAN enabled computer can physically move from the operating range of one
access point to another without losing connection to the LAN. A quick association
“hand-shake” is made between the new access point and the wireless device as the
computer traverses from the coverage of one access point to another.
RealTek RTL8187L
Mobil station 1
Mobil station 2
ADSL Modem
RealTek RTL8187L
Access Point
ADSL Modem
Mobil station 1