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Glossary
When one access point is connected to a wired network and supports a set of wireless stations, it
is referred to as a basic service set (
BSS
). An extended service set (
ESS
) is created by combining
two or more BSSs.
Ad hoc Mode
Ad hoc mode
is a
Wireless Networking Framework
in which stations communicate directly with
each other. It is useful for quickly establishing a network in situations where formal infrastructure
is not required.
Ad hoc mode is also referred to as
peer-to-peer mode
or an independent basic service set
(
IBSS
).
AES
The
Advanced Encryption Standard
(AES) is a symmetric 128-bit block data encryption technique
developed to replace DES encryption. AES works at multiple network layers simultaneously.
Further information is available on the
NIST Web site
.
Basic Rate Set
The
basic rate set
defines the transmission rates that are mandatory for any station wanting to
join this wireless network. All stations must be able to receive data at the rates listed in this set.
Beacon
Beacon frames
provide the “heartbeat” of a
WLAN
, announcing the existence of the network,
and enabling stations to establish and maintain communications in an orderly fashion. It carries
the following information (some of which is optional):
Bridge
A connection between two local area networks (
LAN
s) using the same protocol, such as Ethernet
or
IEEE 802.1x
.
• The
Timestamp
is used by stations to update their local clock, enabling synchronization
among all associated stations.
• The
Beacon interval
defines the amount of time between transmitting beacon frames. Before
entering power save mode, a station needs the beacon interval to know when to wake up to
receive the beacon.
• The
Capability Information
lists requirements of stations that want to join the
WLAN
. For
example, it indicates that all stations must use
WEP
.
• The
Service Set Identifier
(
SSID
).
• The
Basic Rate Set
is a bitmap that lists the rates that the
WLAN
supports.
• The optional
Parameter Sets
indicates features of the specific signaling methods in use (such
as frequency hopping spread spectrum, direct sequence spread spectrum, etc.).
• The optional
Traffic Indication Map
(TIM) identifies stations, using power saving mode, that
have data
frames queued for them.
Summary of Contents for AirPremier DWL-2210AP
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