ZyXEL Communications 802.11b/g/n poe access point User Manual
Chapter 5 Wireless Settings Screen
NWA1100-N User’s Guide
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5.5.2 Additional Wireless Terms
Table 8
Additional Wireless Terms
TERM
DESCRIPTION
Intra-BSS Traffic
This describes direct communication (not through the NWA) between two wireless
devices within a wireless network. You might disable this kind of communication to
enhance security within your wireless network.
devices within a wireless network. You might disable this kind of communication to
enhance security within your wireless network.
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.
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 NWA. The lower the value, the
more often the devices must get permission.
sometimes get permission to send information to the NWA. 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 NWA.
wireless devices never have to get permission to send information to the NWA.
Preamble
A preamble affects the timing in your wireless network. There are two preamble
modes: long and short.
modes: long and short.
If a device uses a different preamble mode than the NWA
does, it cannot communicate with the NWA.
Fragmentation
Threshold
Threshold
A small fragmentation threshold is recommended for busy networks, while a larger
threshold provides faster performance if the network is not very busy.
threshold provides faster performance if the network is not very busy.
Roaming
If you have two or more NWAs (or other wireless access points) on your wireless
network, you can enable this option so that wireless devices can change locations
without having to log in again. This is useful for devices, such as notebooks, that
move around a lot.
network, you can enable this option so that wireless devices can change locations
without having to log in again. This is useful for devices, such as notebooks, that
move around a lot.
Antenna
An antenna couples Radio Frequency (RF) signals onto air. A transmitter within a
wireless device sends an RF signal to the antenna, which propagates the signal
through the air. The antenna also operates in reverse by capturing RF signals from
the air.
wireless device sends an RF signal to the antenna, which propagates the signal
through the air. The antenna also operates in reverse by capturing RF signals from
the air.
Positioning the antennas properly increases the range and coverage area of a wireless
LAN.
LAN.