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.
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).