LAN-Express IEEE 802.11 Wireless Adapter User Guide
Chapter 3 Wireless Topologies
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3-2-1 Roaming Among Multiple APs
For larger environments, the LAN-Express IEEE 802.11 Wireless Adapter may roam
from one Access Point to another while maintaining the same network connection. The
Access Points establish coverage areas or cells similar in concept to those of a cellular
phone network. The card will connect to any Access Point that is within range.
The LAN-Express IEEE 802.11 Wireless Adapter supports both roaming between APs of
the same type (for example, from one 802.11b AP to another) and roaming between APs
of different types (for example, from an 802.11b AP to an 802.11g AP). Figure 3-2
illustrates roaming between APs of different radio types:
Figure 3-2 Roaming Between APs of Different Radio Types
As the mobile client seamlessly switches from cell to cell, its network connectivity is
preserved. The user can move freely between the Access Points in the network. When the
roaming client leaves the transmission range of one Access Point, the card automatically
detects the other Access Point(s) in the same vicinity to continue the network connection.
