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Glossary

The glossary contains terms and acronyms that are used in this document.

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

Narrowband Internet of Things (NB-IoT) User Equipment (UE) category with 200 kHz UE bandwidth and a single RX antenna, specified in 3GPP Release 13.

DC

Direct Current

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

Development Kit (DK)

A development platform used for application development.

DK

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 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

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

MIPI RF Front-End Control Interface (RFFE)

A dedicated control interface for the RF front-end subsystem. MIPI Alliance

MIPI RFFE

Noise Factor (NF)

The relation of the Signal-to-Noise Ratio (SNR) in the device input to the SNR in the device output.

NF

Over-the-Air (OTA)

Refers to any type of wireless transmission.

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

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

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)

A number of 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 UE when moving to a new tracking area in the LTE (Long-term Evolution) system.

TAU

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 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).

UE