Cisco Aironet Installation And Configuration Manual page 275

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 allows users to move through a facility while maintaining an
Roaming
unbroken connection to the LAN.
A connector type unique to Cisco Aironet radios and antennas. Part 15.203 of the FCC rules covering
RP-TNC
spread spectrum devices limits the types of antennas that may be used with transmission equipment. In
compliance with this rule, Cisco Aironet, like all other wireless LAN providers, equips its radios and
antennas with a unique connector to prevent attachment of non-approved antennas to radios.
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 the user information over a much wider bandwidth than
Spread Spectrum
otherwise required in order to gain benefits such as improved interference tolerance and unlicensed
operation.
SSID Service set identifier. A unique identifier that stations must use to be able to communicate with an
access point. The SSID can be any alphanumeric entry up to a maximum of 32 characters.
T
Temporal Key Integrity Protocol. Also referred to as WEP key hashing. A security feature that defends
TKIP
against an attack on WEP in which the intruder uses the initialization vector (IV) in encrypted packets
to calculate the WEP key. TKIP removes the predictability that an intruder relies on to determine the
WEP key by exploiting IVs.
The power level of radio transmission.
Transmit Power
U
Packets transmitted in point-to-point communication.
Unicast Packets
Unlicensed National Information Infrastructure. An FCC regulatory domain for 5-GHz wireless
UNII
devices. UNII bands are 100 MHz wide and divided into four channels when using 802.11a OFDM
modulation.
OL-1394-04
Cisco Aironet Wireless LAN Client Adapters Installation and Configuration Guide for Windows
Glossary
GL-5