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Term Definition
troposphere. They are not refracted or reflected by ionized regions in the upper
atmosphere. Microwave beams do not readily diffract around barriers such as
hills, mountains, and large human-made structures.
MIMO An antenna technology for wireless communications in which multiple antennas
are used at both the source (transmitter) and the destination (receiver). The
antennas at each end of the communications circuit are combined to minimize
errors and optimize data speed. MIMO is one of several forms of smart antenna
technology, the others being MISO (multiple input, single output) and SIMO (single
input, multiple output).
MISO An antenna technology for wireless communications in which multiple antennas
are used at the source (transmitter). The antennas are combined to minimize errors
and optimize data speed. The destination (receiver) has only one antenna. MISO is
one of several forms of smart antenna technology, the others being MIMO (multiple
input, multiple output) and SIMO (single input, multiple output).
near field communication(NFC) A short-range wireless connectivity standard (Ecma-340, ISO/IEC 18092) that uses
magnetic field induction to enable communication between devices when they're
touched together, or brought within a few centimeters of each other. The standard
specifies a way for the devices to establish a peer-to-peer (P2P) network to
exchange data.
optical wireless The combined use of conventional radio-frequency (RF) wireless and optical fiber
for telecommunication. Long-range links are provided by optical fiber and links
from the long-range end-points to end users are accomplished by RF wireless or
laser systems. RF wireless at ultra-high frequencies (UHF) and microwave
frequencies can carry broadband signals to individual computers at substantial
data speeds.
OCSP Client The ArubaOScontroller can act as an OCSP client and issues OCSP queries to
remote OCSP responders located on the intranet or Internet.
OCSP Responder The OCSP client retrieves certificate revocation status from an OCSP responder.
The responder may be the certificate authority (CA) that has issued the certificate
in question or it may be some other designated entity which provides the service
on behalf of the CA.
radio frequency (RF) Portion of electromagnetic spectrum in which electromagnetic waves are
generated by feeding alternating current to an antenna.
RF plan Dell deployment modeling tool. This tool is provided in the Dell Web-UI as well as
the Dell Mobility Management System.
structured wireless-aware network
(SWAN)
A technology that incorporates a WLAN into a wired wide-area network (WAN).
SWAN technology can enable an existing wired network to serve hundreds of
users, organizations, corporations, or agencies over a large geographic area. A
SWAN is said to be scalable, secure, and reliable.
transponder A wireless communications, monitoring, or control device that picks up and
automatically responds to an incoming signal. The term is a contraction of the
words transmitter and responder. Transponders can be either passive or active.
ultra high frequency (UHF) International Telecommunication Union (ITU) band 9, 300-3000 MHz, 1m - 100 mm
frequency wavelength.
ultra wideband (UVB) Is a wireless technology for transmitting large amounts of digital data over a wide
DellPowerConnectW-SeriesArubaOS6.2 | User Guide Acronymsand Terms | 867