User Manual

AirSynergy 2000 Installation Guide
Page 49 Commercial in Confidence UGD-D01001 Rev B
9 Appendix B - Glossary of Terms - Acronym, Abbreviations &
Definitions
Table 15 - Glossary of Terms
Term
Definition
3GPP
3rd Generation Partnership Project, responsible for LTE
AWGN
Additive White Gaussian Noise is a channel model in which the only impairment
to communication is a linear addition of white noise with a constant spectral
density and a Gaussian distribution of amplitude.
BER
Bit Error Rate
dB
Decibel. A logarithmic unit used to describe a ratio (such as power ratio in radio
telecommunications)
dBm
An abbreviation for the power ratio in decibels (dB) of the measured power
referenced to one milliwatt (mW). It is used as a convenient measure of
absolute power because of its capability to express both very large and very
small values in a short form
eNodeB
Evolved Node B, is the element in E-UTRAN of LTE
ESP
Encapsulating Security Payloads (ESP) provide confidentiality, data-origin
authentication, connectionless integrity, an anti-replay service (a form of partial
sequence integrity), and limited traffic-flow confidentiality
E-UTRAN
Evolved UMTS Terrestrial Radio Access Network, is the air interface of 3GPP's
Long Term Evolution
FDD
Frequency-Division Duplexing. A transceiver mode where the transmitter and
receiver operate at different carrier frequencies
GNSS
Global Navigation Satellite System is a term used to describe a satellite
navigation system with global coverage. There are currently two fully operational
GNSSs – the US GPS and the Russian GLONASS.
HPBW
Half Power BandWidth is the angular separation in an antenna, in which the
magnitude of the radiation pattern decreases by 50% (or -3 dB) from the peak of
the main beam
IPSec
Internet Protocol Security is a protocol suite for securing Internet Protocol (IP)
communications by authenticating and encrypting each IP packet of a
communication session
LED
Light Emitting Diode
LTE
Long Term Evolution
MAC
Medium Access Controller – responsible for several functions such Error
Correction, Packet (De)Multiplexing, etc…
MME
Mobility Management Entity is the key control-node for the LTE access-network.
It is responsible, among other things for idle mode UE tracking and paging
procedure including retransmissions
MTBF
Mean Time Between Failures
OFDMA
Orthogonal Frequency-Division Multiple Access (OFDMA) is a multi-user
version of OFDM digital modulation scheme, used for eNodeB transmissions to
UEs
PDU
Protocol Data Unit
PTP
Precision Time Protocol is used to synchronize clocks throughout a network. In