User's Manual Part 1

ZyXEL G-220F User’s Guide
Wireless LAN Network 2-1
Chapter 2
Wireless LAN Network
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 IEEE 802.11g 11 Mbps Wireless LAN
IEEE 802.11g is fully compatible with the IEEE 802.11b standard. This means an IEEE 802.11b radio card
can interface directly with an IEEE 802.11g wireless device (and vice versa) at 11 Mbps or lower
depending on range. IEEE 802.11g has several intermediate rate steps between the maximum and minimum
data rates. The IEEE 802.11g data rate and modulation are as follows:
Table 2-1 IEEE 802.11G
DATA RATE (MBPS) MODULATION
1 DBPSK (Differential Binary Phase Shift Keyed)
2
DQPSK (Differential Quadrature Phase Shift Keying
)
5.5 / 11 CCK (Complementary Code Keying)
6/9/12/18/24/36/48/54 OFDM (Orthogonal Frequency Division Multiplexing)
The ZyXEL G-220F may be prone to RF (Radio Frequency) interference from other
2.4 GHz devices such as microwave ovens, wireless phones, Bluetooth enabled
devices, and other wireless LANs.
2.1.2 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.
2.1.3 Channel
A radio frequency used by a wireless device is called a channel.