Chapter 7 Wireless 129
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Coverage-oriented: With less interference nearby, this mode enables the
device to cover wider area.
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Capacity-oriented: With strong interference nearby, this mode improves
the device’s anti-interference capability.
The Transmit Power Control (TPC) function decreases the TX power of this
device automatically to improve the negotiation rate when the two devices are
too close.
By default, when the received signal strength is greater than -25 dBm, the CPE
decreases its TX power. The received signal strength can be checked on the
Status > Wireless Status page.
It is used to adjust the signal reception level. A higher level leads to better signal
reception capability and more wireless networks can be searched, but lower
throughput. Adjust the level based on your actual situation.
It specifies the wireless transmission distance of this device. You can set it based
on the actual installation distance.
It specifies the interval at which this device sends Beacon frames.
Beacon frames are sent at the interval to announce the existence of a wireless
network. Generally, a smaller interval allows wireless clients to connect to this
device sooner, while a larger interval allows the wireless network to transmit
data quicker.
It specifies the threshold of a fragment. The unit is byte.
Fragmenting is a process that divides a frame into several fragments, which are
transmitted and acknowledged separately. If the size of a frame exceeds this
threshold, the frame is fragmented.
In case of a high error rate, you can reduce the threshold. If the transmission
fails, this device resends only the fragments that have not been sent
successfully, so as to increase the frame throughput.
In an environment with little interference, you can increase the threshold to
reduce the number of fragments, so as to increase the frame throughput.
It specifies the frame length threshold for triggering the RTS/CTS mechanism. If
a frame exceeds this threshold, the RTS/CTS mechanism is triggered to reduce
conflicts. The unit is byte.
Set the RTS threshold based on the actual situation. An excessively small value
increases the RTS frame transmission frequency and bandwidth requirement. A
higher RTS frame transmission frequency enables a wireless network to recover
from conflicts quicker. For a wireless network with high user density, you can
reduce this threshold for reducing conflicts.
The RTS mechanism requires some network bandwidth. Therefore, it is triggered
only when frames exceed this threshold.
It specifies the countdown before this device transmits broadcast and multicast
frames in its cache. The unit is Beacon interval.
For example, if DTIM Interval is set to 1, this device transmits all cached frames
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