Appendix B - Specifications
-
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.
U
The RTS mechanism will be activated if the data size
exceeds the value you set.
U
. 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.
Data Rate
: By default, the unit adaptively selects the highest
possible rate for transmission. Select the basic rates to be used
among the following options: Auto, 1, 2, 5.5, 11or 54 Mbps. For
most networks the default setting is
Auto
which is the best choice.
When
Auto
is enabled the transmission rate will select the optimal
rate. If obstacles or interference are present, the system will
automatically fall back to a lower rate.
Preamble Type
: A preamble is a signal used in wireless
environment to synchronize the transmitting timing including
Synchronization and Start frame delimiter. (
Note
: If you want to
change the Preamble type into
Long
or
Short
, please check the
setting of AP)
Tx Burst
: Click to enable the Tx burst mode.
802.11g Protection
: The 802.11g standard includes a protection
mechanism to ensure mixed 802.11b and 802.11g operations. If
there is no such kind of mechanism exists, the two kinds of
standards may mutually interfere and decrease network’s
performance.
Enable WatchDog
: Check to enable the WatchDog function.
Watch Interval
: Set the
Watch Interval
in from
1
to
60
minutes.
Watch Host
: Set the
Watch Host
in this column.
