Chapter 6 Wireless
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6.10 Technical Reference
This section discusses wireless LANs in depth.
6.10.1 Additional Wireless Terms
The following table describes some wireless network terms and acronyms used in the Device’s web
configurator.
Table 23
Additional Wireless Terms
TERM
DESCRIPTION
RTS/CTS Threshold
In a wireless network which covers a large area, wireless devices are sometimes not
aware of each other’s presence. This may cause them to send information to the AP at
the same time and result in information colliding and not getting through.
By setting this value lower than the default value, the wireless devices must sometimes
get permission to send information to the Device. The lower the value, the more often
the devices must get permission.
If this value is greater than the fragmentation threshold value (see below), then
wireless devices never have to get permission to send information to the Device.
Preamble
A preamble affects the timing in your wireless network. There are two preamble
modes: long and short.
If a device uses a different preamble mode than the Device
does, it cannot communicate with the Device.
Authentication
The process of verifying whether a wireless device is allowed to use the wireless
network.
Fragmentation
Threshold
A small fragmentation threshold is recommended for busy networks, while a larger
threshold provides faster performance if the network is not very busy.
Channel Width
A standard 20MHz channel offers transfer speeds of up to 150Mbps whereas a 40MHz
channel uses two standard channels and offers speeds of up to 300 Mbps.
Select
20MHz
if you want to lessen radio interference with other wireless devices in your
neighborhood or the wireless clients do not support channel bonding.
Select
Auto
to have the Device configure the wireless channel width automatically.
This field is available only when you set the
802.11 Mode
to
802.11n
or
802.11b+g+n
in
the
Advanced Setup
screen.
Apply
Click this to save your changes.
Cancel
Click this to restore your previously saved settings.
Table 22
Network Setting > Wireless> Advanced (continued)
LABEL
DESCRIPTION
