DICTIONARY
Common terms & acronyms used in wireless industry
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NEF - Network Exposure Function -
A function of the 3GPP core network architecture that provides
a means to securely expose capabilities and events. NEF stores the received information as structured data and exposes
it to other network functions.
NEMs - Network Equipment Manufacturers -
Firms that build network equipment for service providers to
manage their networks.
NF - Noise Figure -
A figure used by RF engineers to determine the degradation in the signal-to-noise ratio in a wireless network, measured in decibels (dB). Lower NF values indicate a highly performing network. This is especially true for LTE
NFTF - Near-Field to Far-Field Transform -
A method for over-the-air (OTA) mmWave testing that samples
the phase and amplitude of the electrical field in the near
region and uses math to predict the far-field pattern. While
this is a compact, low-cost method, it is subject to transmitter
interference that impacts measurement accuracy.
NGC/NGCN – Next Generation Core / Next Generation Core Network -
The 5G next generation core network. NGC or NGCN is
the part of the network that provides services to mobile
subscribers through the radio access network (RAN). It is also the gateway to other networks, for instance to the public-
switched telephone or to public clouds.
NLOS - Non-Line of Sight -
An RF signal path that is obscured by obstacles. Common
causes for non-line-of-sight include obstacles such as
buildings, trees, hills, and mountains.
NR - New Radio -
Shorthand for “5G NR.” 5G NR is the standard for a new
OFDM-based air interface designed to support 5G devices,
services, deployments, and spectrum. NR is used to describe
5G in the same way LTE is used to describe 4G. The 3GPP has
three areas of focus for 5G NR: Enhanced mobile broadband
(eMBB), massive machine-type communications (mMTC), and
ultra-reliable low-latency communications (uRLLC).
NRF - Network Repository Function -
A component of the 3GPP architecture that provides service
discovery between individual network functions.
NSA NR - Non-Standalone NR -
A 5G network deployment that uses existing 4G LTE radio and
evolved packet core network control plane but also allows
carriers to begin early trials using 5G UEs and 5G data (or
user) plane.
NSSF - Network Slice Selection Function -
3GPP architecture function that selects the set of network slice
instances serving the user equipment and determines which
access and mobility management function to use.
Numerology -
Refers to how cellular communications waveforms are created
based on underlying structures. The 5G NR specification
permits flexible numerology, meaning the OFDM frame can
have variable subcarrier spacing, symbol timing, and flexible
usage of symbol slots. 5G NR permits different numerologies
to be transmitted on the same carrier frequency.
NV IOT – Network Vendor Interoperability Testing -
Testing among vendors of network hardware and software to
verify the interfaces between their network elements prior to
software release in operator networks.
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