ZyXEL Communications LTE Series User Manual page 76

Figure 54 Example of a WiFi Network
The WiFi network is the part in the blue circle. In this WiFi network, devices A and B use the access point
(AP) to interact with the other devices (such as the printer) or with the Internet. Your Zyxel Device is the
AP.
Every WiFi network must follow these basic guidelines.
• Every device in the same WiFi network must use the same SSID.
The SSID is the name of the WiFi network. It stands for Service Set IDentifier.
• If two WiFi networks overlap, they should use a different channel.
Like radio stations or television channels, each WiFi network uses a specific channel, or frequency, to
send and receive information.
• Every device in the same WiFi network must use security compatible with the AP.
Security stops unauthorized devices from using the WiFi network. It can also protect the information
that is sent in the WiFi network.
Radio Channels
In the radio spectrum, there are certain frequency bands allocated for unlicensed, civilian use. For the
purposes of WiFi networking, these bands are divided into numerous channels. This allows a variety of
networks to exist in the same place without interfering with one another. When you create a network,
you must select a channel to use.
Since the available unlicensed spectrum varies from one country to another, the number of available
channels also varies.
Chapter 6 Wireless
LTE
LTE Series User's Guide
76