X-Micro Tech. IEEE 802.11b User Manual

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Glossary

IEEE 802.11 Standard

The IEEE 802.11 Wireless LAN standards subcommittee, which is formulating a

standard for the industry.

Access Point

An internetworking device that seamlessly connects wired and wireless networks together.

Ad Hoc

An Ad Hoc wireless LAN is a group of computers, each with a WLAN adapter,

connected as an independent wireless LAN. Ad Hoc wireless LAN is applicable at a

departmental scale for a branch or SOHO operation.

BSSID

A specific Ad Hoc LAN is called a Basic Service Set (BSS). Computers in a BSS must

be configured with the same BSSID.

DHCP

Dynamic Host Configuration Protocol - a method in which IP addresses are assigned

by server dynamically to clients on the network. DHCP is used for Dynamic IP

Addressing and requires a dedicated DHCP server on the network.

Direct Sequence Spread Spectrum

This is the method the wireless cards use to transmit data over the frequency

spectrum. The other method is frequency hopping. Direct sequence spreads the data

over one frequency range (channel) while frequency hopping jumps from one narrow

frequency band to another many times per second.

ESSID

An Infrastructure configuration could also support roaming capability for mobile

workers. More than one BSS can be configured as an Extended Service Set (ESS).

Users within an ESS could roam freely between BSSs while served as a continuous

connection to the network wireless stations and Access Points within an ESS must be

configured with the same ESSID and the same radio channel.

Ethernet

Ethernet is a 10/100Mbps network that runs over dedicated home/office wiring. Users

must be wired to the network at all times to gain access.

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