Compaq WL110 User Manual page 71

You can enable RTS/CTS Medium Reservation on individual stations, i.e. the
setting of this parameter does not have to be the same for all 11Mbps Wireless
LAN equipped devices in your network.
Figure 6-3 Medium Reservation "Request to Send"
About the Medium Reservation Mechanism
When you enable RTS/CTS medium reservation on a suspect "hidden station",
this station and its Access Point will use a Request to Send/Clear to Send
protocol (RTS/CTS).
The station will send an RTS to the Access Point, that will include
information about the length of the frame that the station would like to
transmit (see Figure 6-3).
Upon receipt, the Access Point will respond with a CTS message to all
stations within its range to:
— notify all other stations to defer transmissions for the time-frame of the
requested transmission.
— confirm the requestor station that the Access Point has checked the
medium for availability, and has reserved it for the time-frame of the
requested transmission.
The CTS process is shown in Figure 6-4 on page 6-12.
Optimizing Performance 6-11