Acronyms

The following table provides information about the acronyms and the terminology used in the document.

Table - Acronyms

Term	Definition
3GPP	3rd Generation Partnership Project
5G-AN	5G Access Network
5GC	5G Core Network
5G System	3GPP system consisting of 5G Access Network (AN), 5G Core Network and UE
AMF	Access and Mobility Management Function
API Gateway	An API gateway is programming that sits in front of an API (Application Programming Interface) and is the single-entry point for a defined group of microservices
CNE	Cloud Native Environment
DD	Data Director
Dimension	Dimension is a tag of Metric. For example, "ocnrf_nfRegister_rx_requests_total {{ OriginatorNfType }} {{NrfLevel }} {{NfInstanceId }}" where the dimensions are: OriginatorNfType, NrfLevel, and NfInstanceId.
DNS	Domain Name System
FQDN	Fully Qualified Domain Name
K8s	Kubernetes
KPI	Key Performance Indicator
MMI	Machine Machine Interface
MPS	Messages Per Second
NDB	Network Database
NF	Network Function A functional building block within a network infrastructure, which has well defined external interfaces and defined functional behavior. In practical terms, a network function is often a network node or physical appliance.
Network Slice	A logical network that provides specific network capabilities and network characteristics.
Network Slice instance	A set of Network Function instances and the required resources. For example, compute, storage, and networking resources that form a deployed Network Slice.
NF Consumer	A generic way to refer to an NF which consumes services provided by another NF. For example, an AMF is referred to as a Consumer when it consumes AMPolicy services provided by the PCF.
NF Instance	A specific instance of a network function type.
NF Producer or NF Provider	A generic way to refer to an NF which provides services that can be consumed by another NF. For example, a PCF is a provider NF and provides AMPolicy Services
NRF	Network Repository Function
PCF	Policy Control Function
PLMN	Public Land Mobile Network
Resiliency	The ability of the NFV framework to limit disruption and return to normal or at a minimum acceptable service delivery level in the fame of a fault, failure, or an event that disrupts normal operation.
SASL	Simple Authentication and Security Layer
Scaling	Ability to dynamically extend or reduce resources granted to the Virtual Network Function (VNF) as needed. This includes scaling out/in or scaling up/down.
Scaling Out/In/ Horizontally	The ability to scale by adding or removing resource instances, for example, VMs. It is also known as scaling Horizontally.
Scaling Up/Down/ Vertically	The ability to scale by changing allocated resources, for example, increase or decrease memory, CPU capacity, or storage size.
SCP	Service Communication Proxy
SEPP	Security Edge Protection Proxy
SLF	Subscriber Location Function
SMF	Session Management Function
URI	Uniform Resource Identifier