Cisco CB21AG Installation And Configuration Manual page 211

O
Orthogonal frequency division multiplexing. A multicarrier modulation method for broadband wireless
OFDM
communications.
Packets that were discarded because the access point had a temporary overload of packets to handle.
overrun packets
P
A basic message unit for communication across a network. A packet usually includes routing
packet
information, data, and sometimes error detection information.
Q
Quadruple phase shift keying. A modulation technique used by IEEE 802.11-compliant wireless LANs
QPSK
for transmission at 2 Mbps.
R
The frequency at which a radio operates.
radio channel
A linear measure of the distance that a transmitter can send a signal.
range
A measurement of the weakest signal a receiver can receive and still correctly translate it into data.
receiver sensitivity
Radio frequency. A generic term for radio-based technology.
RF
A feature of some access points that enables users to move through a facility while maintaining an
roaming
unbroken connection to the LAN.
The packet size at which an access point issues a request to send (RTS) before sending the packet.
RTS threshold
S
A radio transmission technology that spreads data over a much wider bandwidth than otherwise
spread spectrum
required in order to gain benefits such as improved interference tolerance and unlicensed operation.
Service set identifier. A unique identifier that stations must use to be able to communicate with an
SSID
access point. The SSID can be any alphanumeric entry up to a maximum of 32 characters.
Cisco Aironet 802.11a/b/g Wireless LAN Client Adapters (CB21AG and PI21AG) Installation and Configuration Guide
OL-4211-02
Glossary
GL-5