LevelOne WAP-0003, Руководство пользователя

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MAC Address ? Media Access Control Address is a unique hex number assigned by the
manufacturer to any Ethernet networking device, such as a network adapter, that allows the
network to identify it at the hardware level.
Multicasting ? Sending data to a group of nodes instead of a single destination.
Multiple Bridge – One of the additional AP operating modes offered by 54mbps Access Point,
which allows a group of APs that consists of two or more APs to connect two or more Ethernet
networks or Ethernet enabled clients together. The way that multiple brid ge setup is based on
the topology of Ad-Hoc mode.
Node
? A network junction or connection point, typically a computer or workstation.
Packet ? A unit of data routed between an origin and a destination in a network.
PLCP
? P hysical layer convergence protocol
PPDU ? PLCP protocol data unit
Preamble Type ? During transmission, the PSDU shall be appended to a PLCP preamble and
header to create the PPDU. Two different preambles and headers are defined as the mandatory
supported long preamble and header which interoperates with the current 1 and 2 Mbit/s DSSS
spe cification as described in IEEE Std 802.11-1999, and an optional short preamble and header.
At the receiver, the PLCP preamble and header are processed to aid in demodulation and delivery
of the PSDU. The optional short preamble and header is intended for application where
maximum throughput is desired and interoperability with legacy and non-short-preamble
capable equipment is not consideration. That is, it is expected to be used only in networks of like
equipment that can all handle the optional mode. (IEEE 802.11b standard)
PSDU ? PLCP service data unit
Roaming ? A LAN mobile user moves around an ESS and enjoys a continuous connection to an
Infrastructure network.
RTS ? R equest T o S end. An RS-232 signal sent from the transmitting station to the receiving
station requesting permission to transmit.
RTS Threshold
? Transmitters contending for the medium may not be aware of each other.
RTS/CTS mechanism can solve this “Hidden Node Problem”. If the packet size is smaller than the
preset RTS Threshold size, the RTS/CTS mechanism will NOT be enabled.