AirLive WL-5470POE - Manual (Page 54)

WL-5470 POE User’s Manual 51
3.10 Advanced Wireless Settings
When click on Advanced Setup button under client mode, a pop-up window appears and show parameter as
follow:
Fragmentation:
Fragmentation
mechanism is used
for improving the
efficiency when high
traffic flows along in
the wireless network.
If your 802.11g
Wireless LAN PC
Card often transmit
large files in wireless
network, you can
enter new Fragment
Threshold value to
split the packet. The
value can be set from
256 to 2346. The
default value is 2346.
RTS Threshold: RTS
Threshold is a
mechanism
implemented to
prevent the “Hidden
Node” problem.
“Hidden Node” is a
situation in which two stations are within range of the same Access Point, but are not within range of each
other. Therefore, they are hidden nodes for each other. When a station starts data transmission with the
Access Point, it might not notice that the other station is already using the wireless medium. When these two
stations send data at the same time, they might collide when arriving simultaneously at the Access Point. The
collision will most certainly result in a loss of messages for both stations.
Thus, the RTS Threshold mechanism provides a solution to prevent data collisions. When you enable RTS
Threshold on a suspect “hidden station”, this station and its Access Point will use a Request to Send (RTS).
The station will send an RTS to the Access Point, informing that it is going to transmit the data. Upon receipt,
the Access Point will respond with a CTS message to all station within its range to notify all other stations to
defer transmission. It will also confirm the requestor station that the Access Point has reserved it for the
time-frame of the requested transmission.
If the “Hidden Node” problem is an issue, please specify the packet size. The RTS mechanism will be
activated if the data size exceeds the value you set..
The default value is 2347.
Warning:
Enabling RTS Threshold will cause redundant network overhead that could negatively affect the
throughput performance instead of providing a remedy.
This value should remain at its default setting of 2347. Should you encounter inconsistent data flow, only
minor modifications of this value are recommended.