Additional Wireless Terms; Table 14 Additional Wireless Terms - ZyXEL Communications 802.11b/g Wireless Access Point NWA-1100 User Manual

6.5.3 Additional Wireless Terms

Table 14 Additional Wireless Terms

TERM
Intra-BSS Traffic
RTS/CTS Threshold
Preamble
Fragmentation
Threshold
Roaming
Antenna
ZyXEL NWA-1100 User's Guide
DESCRIPTION
This describes direct communication (not through the ZyXEL Device)
between two wireless devices within a wireless network. You might disable
this kind of communication to enhance security within your wireless network.
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 ZyXEL 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
ZyXEL Device.
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 ZyXEL Device does, it cannot communicate with the ZyXEL Device.
A small fragmentation threshold is recommended for busy networks, while a
larger threshold provides faster performance if the network is not very busy.
If you have two or more ZyXEL Devices (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.
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.
Positioning the antennas properly increases the range and coverage area of
a wireless LAN.
Chapter 6 Wireless Settings Screen
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