The glossary contains terms and acronyms that are used in this document.
Access Port Protection (APPROTECT)
A register used to prevent read and write access to all CPU registers and memory-mapped addresses.
APPROTECT
Carrier Wave (CW)
A single-frequency electromagnetic wave that can be modulated in amplitude, frequency,
or phase to convey information.
CW
Cat-M1
LTE-M User Equipment (UE) category with a single RX antenna, specified in 3GPP Release
13.
Cat-NB1
NB-IoT User Equipment (UE) category with 200 kHz UE bandwidth and a single RX antenna,
specified in 3GPP Release 13.
Cat-NB2
An upgraded version of Cat-NB1, specified in 3GPP Release 14.
DC
Direct Current
DECT NR+
A non-cellular radio standard included as part of the 5G standards by the
ITU.
DECT NR+
Development Kit (DK)
A hardware development platform used for application development.
DK
Device Under Test (DUT)
A manufactured product undergoing testing.
DUT
Discontinuous Reception (DRX)
A method in mobile communication to conserve the battery of a mobile device by turning
the RF modem in a sleep state.
DRX
Erase Protection (ERASEPROTECT)
A register used to block NVMC ERASEALL, RRAMC ERASEALL, and CTRL-AP.ERASEALL
functionality.
ERASEPROTECT
Extended Discontinuous Reception (eDRX)
A method to conserve the battery of an IoT (Internet of Things) device by allowing it
to remain inactive for extended periods.
eDRX
Global Navigation Satellite System (GNSS)
A satellite navigation system with global coverage. The system provides signals from
space transmitting positioning and timing data to GNSS receivers, which use this data to
determine location.
GNSS
Global Positioning System (GPS)
A satellite-based radio navigation system that provides its users with accurate
location and time information over the globe.
GPS
Integrated Circuit (IC)
A semiconductor chip consisting of fabricated transistors, resistors, and capacitors.
IC
International Mobile (Station) Equipment Identity (IMEI)
A unique code consisting of 14 digits and a check digit for identifying 3GPP-based
mobile devices.
IMEI
Long-Term Evolution (LTE)
A wireless broadband communication standard for mobile devices and data terminals, based on the GSM/EDGE and UMTS/HSPA technologies.
LTE
Low Mid High (LMH)
A measurement channel definition.
LMH
Low-Noise Amplifier (LNA)
In a radio receiving system, an electronic amplifier that amplifies a very low-power
signal without significantly degrading its signal-to-noise ratio.
LNA
Low-power Wide Area Network (LPWAN)
A type of wireless telecommunication wide area network designed to allow long-range communications at a low bit rate among things, such as sensors operated on a battery.
LPWAN
LTE-M
An open standard that is most suitable for medium throughput applications requiring
low power, low latency, and/or mobility, like asset tracking, wearables, medical, POS, and
home security applications. Also known as E-UTRAN (WB-S1) and Cat-M1.
MIPI RF Front-End Control Interface (RFFE)
A dedicated control interface for the RF front-end subsystem. MIPI Alliance
MIPI RFFE
Narrowband Internet of Things (NB-IoT)
A narrowband technology standard with longer range, lower throughput, and better
penetration in, for example, cellars and parking garages compared to LTE-M. NB-IoT is most
suitable for static, low throughput applications like smart metering, smart agriculture, and
smart city applications. Also known as E-UTRAN (NB-S1), Cat-NB1, and Cat-NB2.
NB-IoT
Noise Factor (NF)
The relation of the Signal-to-Noise Ratio (SNR) in the device input to the SNR in the
device output.
NF
Non-volatile Memory (NVM)
Memory that can retrieve stored information even after having been
power-cycled.
NVM
Over-the-Air (OTA)
Refers to any type of wireless transmission. For Matter, OTA is synonymous with the
Over-the-Air software update mechanism.
OTA
Power Saving Mode (PSM)
A feature introduced in 3GPP Release 12 to improve battery life of IoT (Internet of
Things) devices by minimizing energy consumption. The device stays dormant during the PSM
window.
PSM
Printed Circuit Board (PCB)
A board that connects electronic components.
PCB
Production Test Image (PTI)
A modem firmware version used in the device manufacturing phase.
PTI
Reference Measurement Channel (RMC)
3GPP specified measurement channels for RF performance verification.
RMC
Resource Block (RB)
The smallest unit of resources that can be allocated to a user.
RB
Right Hand Circular Polarization (RHCP)
Circular polarization in which the electric field vector rotates in a right-hand sense
with respect to the direction of propagation.
RHCP
Secure Access Port Protection (SECUREAPPROTECT)
A register used to prevent read and write access to all secure CPU registers and secure memory-mapped addresses.
SECUREAPPROTECT
SEGGER Embedded Studio (SES)
A cross-platform Integrated Development Environment (IDE) for embedded C/C++
programming with support for Nordic Semiconductor devices, produced by SEGGER
Microcontroller.
SES
Serial Wire Debug (SWD)
A standard two-wire interface for programming and debugging ArmĀ® CPUs.
SWD
Signal-to-Noise Ratio (SNR)
The level of signal power compared to the level of noise power, often expressed in
decibels (dB).
SNR
Subscriber Identity Module (SIM)
A card used in User Equipment (UE) containing data for subscriber
identification.
SIM
System in Package (SiP)
Several integrated circuits, often from different technologies, enclosed in a single module that performs as a system or subsystem.
SiP
System on Chip (SoC)
A microchip that integrates all the necessary electronic circuits and components of a
computer or other electronic systems on a single integrated circuit.
SoC
Tracking Area Update (TAU)
A procedure initiated by the User Equipment (UE) when moving to a new tracking area in
the LTE (Long-term Evolution) system.
TAU
Type Allocation Code (TAC)
The initial eight-digit part of an International Mobile (Station) Equipment Identity
(IMEI) code used for identifying the model of a mobile phone.
TAC
Universal Asynchronous Receiver/Transmitter (UART)
A hardware device for asynchronous serial communication between devices.
UART
Universal Integrated Circuit Card (UICC)
A new generation Subscriber Identity Module (SIM) used in User Equipment (UE) for
ensuring the integrity and security of personal data.
UICC
Universal Serial Bus (USB)
An industry standard that establishes specifications for cables and connectors and
protocols for connection, communication, and power supply between computers, peripheral devices,
and other computers.
USB
Unique Slave Identifier (USID)
A unique address for identifying each slave device in an RFFE (RF Front-End)
system.
USID
User Equipment (UE)
Any device used by an end-user to communicate. The UE consists of the Mobile Equipment
(ME) and the Universal Integrated Circuit Card (UICC).