Teletronics EZ Bridge 802.11G - Manual (Page 42)

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Fragmentation threshold
Fragmentation Threshold is the maximum length of the frame, beyond
which payload must be broken up (fragmented) into two or more frames.
Collisions occur more often for long frames because sending them
occupies the channel for a longer period of time, increasing the chance that
another station will transmit and cause collision. Reducing Fragmentation
Threshold results in shorter frames that "busy" the channel for shorter
periods, reducing packet error rate and resulting retransmissions. However,
shorter frames also increase overhead, degrading maximum possible
throughput, so adjusting this parameter means striking a good balance
between error rate and throughput.
RTS threshold
RTS Threshold is the frame size above which an RTS/CTS handshake will
be performed before attempting to transmit. RTS/CTS asks for permission
to transmit to reduce collisions, but adds considerable overhead. Disabling
RTS/CTS can reduce overhead and latency in WLANs where all stations
are close together, but can increase collisions and degrade performance in
WLANs where stations are far apart and unable to sense each other to
avoid collisions (aka Hidden Nodes). If you are experiencing excessive
collisions, you can try turning RTS/CTS on or (if already on) reduce
RTS/CTS Threshold on the affected stations.
Beacon period
In wireless networking, a beacon is a packet sent by a connected device to
inform other devices of its presence and readiness.
When a wirelessly networked device sends a beacon, it includes with it a
beacon interval, which specifies the period of time before it will send the
beacon again. The interval tells receiving devices on the network how long
they can wait in low-power mode before waking up to handle the beacon.
Network managers can adjust the beacon interval, usually measured in
milliseconds (ms) or its equivalent, kilo microseconds (Kmsec).
DTIM interval
Delivery Traffic Indication Message. A DTIM is a signal sent as part of a
beacon by an access point to a client device in sleep mode, alerting the
device to a packet awaiting delivery. A DTIM interval, also known as a Data
Beacon Rate, is the frequency at which an access point's beacon will