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TL-WN422G High-Power Wireless USB Adapter User Guide
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Appendix A: Glossary
IEEE 802.11b - The IEEE 802.11b standard specifies a wireless networking at 11 Mbps
using direct-sequence spread-spectrum (DSSS) technology and operating in the
unlicensed radio spectrum at 2.4GHz, and WEP encryption for security. IEEE 802.11b
networks are also referred to as Wi-Fi networks.
IEEE 802.11g - Specification for wireless networking at 54 Mbps using direct-sequence
spread-spectrum (DSSS) technology, using OFDM modulation and operating in the
unlicensed radio spectrum at 2.4GHz, and backward compatibility with IEEE 8021b
devices, and WEP encryption for security.
Ad-hoc Network - An ad-hoc network is a group of computers, each with a wireless
adapter, connected as an independent IEEE 802.11 wireless LAN. Ad-hoc wireless
computers operate on a peer-to-peer basis, communicating directly with each other without
the use of an access point. Ad-hoc mode is also referred to as an Independent Basic
Service Set (IBSS) or as peer-to-peer mode, and is useful at a departmental scale or
SOHO operation.
Infrastructure Network - An infrastructure network is a group of computers or other
devices, each with a wireless adapter, connected as an IEEE 802.11 wireless LAN. In
infrastructure mode, the wireless devices communicate with each other and to a wired
network by first going through an access point. An infrastructure wireless network
connected to a wired network is referred to as a Basic Service Set (BSS). A set of two or
more BSS in a single network is referred to as an Extended Service Set (ESS).
Infrastructure mode is useful at a corporation scale, or when it is necessary to connect the
wired and wireless networks.
SSID - A Service Set Identification is a thirty-two character (maximum) alphanumeric key
identifying a wireless local area network. For the wireless devices in a network to
communicate with each other, all devices must be configured with the same SSID. This is
typically the configuration parameter for a wireless PC card. It corresponds to the ESSID in
the wireless Access Point and to the wireless network name.
WEP (Wired Equivalent Privacy) - A data privacy mechanism based on a 64 bit or 128 bit
or 256 bit shared key algorithm, as described in the IEEE 802.11g standard.
Wi-Fi - A trade name for the IEEE 802.11b wireless networking standard, given by the
Wireless Ethernet Compatibility Alliance (WECA, see http://www.wi-fi.net), an industry
standards group promoting interoperability among IEEE 802.11b devices.
WLAN (Wireless Local Area Network) - A group
of computers and associated devices
communicate with each other wirelessly, which network serving users are limited in a local
area.