Acronyms

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

Table 1-1 Acronyms

Field	Description
5G-AN	5G Access Network
5GC	5G Core Network
5G-GUTI	5G Globally Unique Temporary Identifier
5QI	5G QoS Identifier
5G-S-TMSI	5G S-Temporary Mobile Subscription Identifier
5GS	5G System
5G-EIR	5G-Equipment Identity Register
(R)AN	(Radio) Access Network
AMF	Access and Mobility Management Function
AUSF	Authentication Server Function
CAPIF	Common API Framework for 3GPP northbound APIs
IWF	Inter-Working Function
NEF	Network Exposure Function
NF	Network Function
NRF	Network Repository Function
NSI ID	Network Slice Instance Identifier
NSSAI	Network Slice Selection Assistance Information
NSSF	Network Slice Selection Function
NSSP	Network Slice Selection Policy
PEI	Permanent Equipment Identifier
PCF	Policy Control Function
QFI	QoS Flow Identifier
QoE	Quality of Experience
SEPP	Security Edge Protection Proxy
SBA	Service Based Architecture
SBI	Service Based Interface
SSC	Session and Service Continuity
SSCMSP	Session and Service Continuity Mode Selection Policy
SMF	Session Management Function
SMSF	Short Message Service Function
S-NSSAI	Single Network Slice Selection Assistance Information
UDM	Unified Data Management
UDR	Unified Data Repository
UDSF	Unstructured Data Storage Function