EP-9321-g/g1
802.11g 54M Wireless LAN PCI Adapter
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5. Glossary
Ad-Hoc Mode
An Ad-hoc integrated wireless LAN is a group of computers, each has a Wireless LAN adapter, Connected as
an independent wireless LAN. Ad hoc wireless LAN is applicable at a departmental scale for a branch or
SOHO operation.
BSS ID
A specific Ad hoc LAN is called a Basic Service Set (BSS). Computers in a BSS must be configured with the
same BSS ID.
DSSS (Direct-Sequencing Spread-Spectrum)
DSSS operate over the radio airwaves in the unlicensed ISM band (industrial, scientific, medical). DSSS uses
a radio transmitter to spread data packets over a fixed range of frequency band.
Encryption
It’s a security method that applies a specific algorithm to data in order to alter the data appearance and
prevent other devices from reading the information.
Firmware
Program that is inserted into programmable read-only memory (programmable read-only memory), thus
becoming a permanent part of a computing device.
Fragmentation Threshold Value
Indicates how much of the network resources is devoted to recovering packet errors. The value should remain
at its default setting of 2,432. If you experience high packet error rates, you can decrease this value but it will
likely decrease overall network performance. Only minor modifications of this value are recommended.
Fragmentation
Breaking a packet into smaller units when transmitting over a network medium that cannot support the original
size of the packet.
IEEE
The Institute of Electrical and Electronics Engineers
IEEE 802.11b/g standard
The IEEE 802.11b/g Wireless LAN standards subcommittee formulates standards for the industry. The
objective is to enable wireless LAN hardware from different manufacturers to communicate.
Infrastructure Mode
A client setting provides connectivity to an Access Point. As compared to Ad-Hoc mode where PCs
communicate directly with each other, clients set in Infrastructure mode all pass data through a central Access
Point. The Access Point not only mediates Wireless network traffic in the immediate neighborhood but also
pro-vides communication with the wired network. An integrated wireless and wireless and wired LAN is called
an Infrastructure configuration. Infrastructure is applicable to enterprise scale for wireless access to central
database, or wireless application for mobile workers.
