Glossary
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
270
IEEE
Institute of Electrical and Electronics Engineers
IEEE 802.11
Standard for wireless networks in the 2.4 GHz range with transmission
rates of up to 2 Mbps.
IEEE 802.11a
Standard for wireless networks in the 5 GHz range with transmission
rates of up to 54 Mbps.
IEEE 802.11b
Standard for wireless networks in the 2.4 GHz range with transmission
rates of up to 11 Mbps.
IEEE 802.11g
Standard for wireless networks in the 2.4 GHz range with transmission
rates of up to 54 Mbps.
IEEE 802.11h
The IEEE 802.11a standard expanded by TPC and DFS.
IEEE 802.11i
Among other things, the standard describes the WPA2 method, the
TKIP procedure and the AES encryption algorithm. IEEE 802.11i
removes a series of weak points in the WEP security mechanism.
IEEE 802.1x
The heart of the standard is the use of a Radius server as the
authentication server. In addition to this, in IEEE 802.1x, the entire
communication is encrypted.
iPCF
i
ndustrial
P
oint
C
oordination
F
unction. This function ensures that the
entire data traffic of a cell is ordered, controlled by the access point.
By avoiding collisions, the throughput can be optimized even with
large numbers of nodes. iPCF also allows fast cell changes.
PST
P
rimary
S
etup
T
ool
RADIUS
R
emote
A
uthentication
D
ial -
U
ser
S
ervice for secure communication
networks
Roaming
Free movement of wireless LAN nodes even beyond the boundaries
of an access point's cell. The nodes and can move from one cell to the
next without any noticeable interruption.
RTS/CTS
R
equest
t
o
s
end/
C
lear
t
o
s
end. Scheme for avoidance of collisions.