Abbreviation	Definitions
2G	Second Generation
3G	Third Generation
3GPP	Third-Generation Partnership Project
4G	Fourth Generation
5G	Fifth Generation
6G	Sixth Generation
AF	Application Function
AI	Artificial Intelligence
AAE	Active Antenna Elemant
AMF	Access and Mobility Function
AUSF	Authentication Server Function
BBU	Base Band Unit
BS	Base Station
BSS	Business System Support
CAPEX	Capital Expenses
CN	Core Network
CO2	Carbon Dioxide
CU	Central Unit
DC	Dana Center
DL	Down Link
DU	Distributed Unit
DV	Data Volume
E2E	End to End
EC	Energy Consumption
EE	Energy Efficiency
EEMNDV	Mobile Network Data Energy Efficiency
eMBB	enhanced Mobile Broadband Connectivity
ES	Energy Saving
gNB	Next-Generation Node B
HDLLC	High-Data-rate and Low-Latency Communications
HMTC	High-performance Machine-Type Communications
ICT	Information and Communication Technology
ILP	Integer Linear Programming
IoT	Internet of Things
IMSI	International Mobile Subscriber Identity
KPI	Key Performance Indicator
LTE	Long-Term Evolution
MANO	Management and Orchestration
MIMO	Multiple-Input–Multiple-Output
MIoT	Massive Internet of Things
mMIMO	Massive MIMO
MU-MIMO	Multi-User MIMO
MTC	Machine-Type Communications
mMTC	massive Machine-Type Communications
MNO	Mobile Network Operator
MVNO	Mobile Virtual Network Operators
NE	Network Element
NEF	Network Exposure Function
NFV	Network Function Virtualization
NG-RAN	Next-Generation Radio Access Network
NR	New Radio
NRF	NR Repository Function
NF	Network Function
NS	Network Slice
NSA	NonStand Alone
NSSF	Network Slicing Selection Function
OPEX	Operational Expenses
OFDM	Orthogonal Frequency Division Multiplexing
OSS	Operations System Support
PA	Power Amplifier
PCF	Policy Control Function
QoS	Quality of Service
RAN	Radio Access Network
RRH	Remote Radio Head
RRH/U	Remote Radio Head/Unit
RRU	Remote Radio Unit
SA	StandAlone
SD	Slice Differentiator
SDN	Software Define Network
SIM	Subscriber Identity Modul
SMF	Session Management Function
S-NSSAI	Single-Network Slice Selection Assistance Information
SST ID	Slice/Service Type Identifier
TCAM	Ternary Content Addressable Memory
TN	Transport Network
UDM	Unified Data Management
UDR	Unified Data Repository
UE	User Equipment
UL	Up Link
UPF	User Plane Function
URLLC	Ultra-Reliable Low-Latency Communication
V2X	Vehicle-to-Everything
VNF	Virtual Network Function
XRM	Extended Reality and Multi-modality