Wireless Lan Network; Overview; Ssid; Channel - ZyXEL Communications ZyAIR G-220 User Manual

This chapter provides background information on wireless LAN network.

2.1 Overview

This section describes the wireless LAN network terms and applications.

2.1.1 SSID

The SSID (Service Set Identity) is a unique name shared among all wireless devices in a
wireless network. Wireless devices must have the same SSID to communicate with each other.

2.1.2 Channel

A radio frequency used by a wireless device is called a channel.

2.1.3 Transmission Rate (Tx Rate)

The ZyAIR provides various transmission (data) rate options for you to select. Options include
Fully Auto, 1 Mbps, 2 Mbps, 5.5 Mbps, 6 Mbps, 9 Mbps, 11 Mbps, 12 Mbps, 18 Mbps, 24
Mbps, 36 Mbps, 48 Mbps and 54 Mbps. In most networking scenarios, the factory default
Fully Auto setting proves the most efficient. This setting allows your ZyAIR to operate at the
maximum transmission (data) rate. When the communication quality drops below a certain
level, the ZyAIR automatically switches to a lower transmission (data) rate. Transmission at
lower data speeds is usually more reliable. However, when the communication quality
improves again, the ZyAIR gradually increases the transmission (data) rate again until it
reaches the highest available transmission rate. You can select any of the above options. If you
wish to balance speed versus reliability, select 54 Mbps in a networking environment where
you are certain that all wireless devices can communicate at the highest transmission (data)
rate. 1 Mbps or 2 Mbps are used often in networking environments where the range of the
wireless connection is more important than speed.
Note: With USB1.0/1.1, the ZyAIR can only transmit at up to 11Mbps.

2.1.4 Wireless Network Application

Wireless LAN works in either of the two modes: ad-hoc and infrastructure.
Chapter 2 Wireless LAN Network

Wireless LAN Network

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