Compaq WL110, Руководство пользователя

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Optimizing Performance 6-9
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If the problem is a poor signal you may consider:
— Connecting the Range Extender Antenna to the station or Access
Point that suffers from poor radio performance.
— Adding an extra Access Point to the network, or
— Adjusting the placement of your Access Points and/or antennas to
provide coverage for all wireless stations.
❏
If you suspect a “hidden” station, see “RTS/CTS Medium Reservation”
on page 6-9.
Note: You can also use the Client Manager to analyze the link quality between
a remote station and the Access Point. In that case, you will need to have
access to the “problem location” to perform on-site diagnostics.
If these options do not resolve your problem, consider one of the following
options:
■
Protocol Filtering (page 6-2)
■
Optimizing Wired Connections (page 6-4)
■
Designing High Capacity Networks (page 6-18)
RTS/CTS Medium Reservation
It is normal behavior for 11Mbps Wireless LAN stations to defer transmissions
automatically when they sense that another wireless device is using the wireless
medium.
This behavior also referred to as the Carrier Sense Multiple Access/Collision
Avoidance protocol (CSMA/CA) will avoid that wireless messages would
collide in situations where two or more stations would start transmissions at the
same time.
The RTS/CTS medium reservation mechanism enables you to improve wireless
performance in network environments where the CSMA/CA protocol would fail
due to the “hidden station” problem as pictured in Figure 6-2.