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Chapter 5
Chapter 5 - Glossary
Glossary
Direct-Sequence Spread Spectrum
See next few pages for detailed explanation.
Extended Service Set (ESS)
A set of one or more interconnected basic service set (BSSs) and integrated
local area networks (LANs) can be configured as an Extended Service Set.
Ethernet
The most widely used LAN access method, which is defined by the IEEE
802.3 standard. Ethernet is normally a shared media LAN meaning all devices
on the network segment share total bandwidth. Ethernet networks operate at
10Mbps using CSMA/CD to run over 10-BaseT cables.
Gateway
A network component that acts as an entrance to another network.
IEEE 802.11
IEEE 802.xx is a set of specifications for LANs from the Institute of Electrical
and Electronic Engineers (IEEE). Most wired networks conform to 802.3, the
specification for CSMA/CD based Ethernet networks or 802.5, the specification
for token ring networks. 802.11 defines the standard for wireless LANs
encompassing three incompatible (non-interoperable) technologies: Frequency
Hopping Spread Spectrum (FHSS), Direct Sequence Spread Spectrum (DSSS),
and Infrared. 802.11 specifies a carrier sense media access control and physical
layer specifications for 1 and 2 Mbps wireless LANs.
IEEE 802.11b
802.11b specifies a carrier sense media access control and physical layer
specifications for 5.5 and 11 Mbps wireless LANs.
IEEE 802.11g
802.11g is an extension to 802.11b, used in majority of wireless LANs today.
802.11g will broaden 802.11b's data rates to 54 Mbps within the 2.4 GHz band
using OFDM (orthogonal frequency division multiplexing) technology. 802.11g
allows backward compatibility with 802.11b devices but only at 11 Mbps or
lower depending on the range and presence of obstructions.
Infrastructure
A wireless network centered about an access point. In this environment, the
access point not only provides communication with the wired network but also
mediates wireless network traffic in the immediate neighborhood.
Summary of Contents for WL-100G
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