ZyXEL Communications NWA-1100 User Manual

 Chapter 6 Wireless Settings Screen

ZyXEL NWA-1100 User’s Guide

Table 14   Additional Wireless Terms

Intra-BSS Traffic

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.

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 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.

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 ZyXEL Device does, it cannot communicate with the ZyXEL Device.

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.

Roaming

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.

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. 
Positioning the antennas properly increases the range and coverage area of 

a wireless LAN.