User's Manual

Chapter 1: Introduction
Wlan Protocol
12 Teklogix 9150 Wireless Gateway User Manual
Only one base station or terminal may transmit at one time. When the channel
is clear, a combination of preset priorities and random choices determines who
“goes next”. Even if two transmitters attempt to send at the same time, message
acknowledgements and retransmissions prevent any data from being lost.
Terminals moving through the Wlan communicate with the base stations that
provide the best communication path to a wired base station. If multiple channels
are used, the terminal looks for a better channel only if it cannot find an acceptable
path back on its current channel.
For detailed information on configuring the 9150 as a base station, please see
Chapter 5: “Base Station Configuration”. For a generalized system diagram, see
Figure 1.5.
Figure 1.5 9150 Base Station/ RRM Configuration
ETHERNET
TCP/IP
915 0 W ireless Gateway
9400 Network Controller
9150
Wireless Gateway
Host