Network Slice Selection Function

E123464

5G core network function

The Network Slice Selection Function (NSSF) is a 5G core network function that determines and assigns the appropriate network slice for user equipment based on subscription, service requirements, and network policies.

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All labels observed (2)

Label	Occurrences
Network Slice Selection Function canonical	4
Allowed NSSAI	1

Statements (51)

Predicate	Object
instanceOf	5G core network function ⓘ
abbreviation	NSSF ⓘ
basedOn	UE subscription data ⓘ network operator configuration ⓘ network policies ⓘ service requirements ⓘ subscriber information ⓘ
contributesTo	QoS assurance per slice ⓘ efficient resource utilization ⓘ isolation between network slices ⓘ
definedIn	5G System ⓘ surface form: 3GPP 5G System architecture specifications 3GPP TS 23.501 ⓘ 3GPP TS 29-series ⓘ surface form: 3GPP TS 29.531
deployedBy	5G network operators ⓘ
domain	5G networks ⓘ mobile telecommunications ⓘ
ensures	UE is served by suitable network slice ⓘ
goal	assign appropriate network slice to user equipment ⓘ
hasRole	network slice assignment ⓘ network slice selection ⓘ
implements	operator slice selection policies ⓘ subscription-based slice access control ⓘ
input	PLMN information ⓘ UE requested NSSAI ⓘ
interactsWith	AMF ⓘ Access and Mobility Management Function ⓘ NRF ⓘ Network Repository Function ⓘ PCF ⓘ Policy Control Function ⓘ UDM ⓘ Unified Data Repository ⓘ surface form: Unified Data Management
manages	Network Slice Selection Function self-linksurface differs ⓘ surface form: Allowed NSSAI Configured NSSAI ⓘ Rejected NSSAI ⓘ
operatesIn	5G Core network ⓘ
output	AMF set information ⓘ selected S-NSSAI list ⓘ
partOf	5G System ⓘ
selects	Network Slice Instance ⓘ Network Slice Selection Assistance Information ⓘ network slice ⓘ
supports	home-routed roaming ⓘ local breakout roaming ⓘ multi-slice operation ⓘ network slicing ⓘ roaming scenarios ⓘ
technologyGeneration	5G System ⓘ surface form: 5G
usesInterface	Nnssf service-based interface ⓘ Nnssf_NSSAIAvailability service ⓘ Nnssf_NSSelection service ⓘ

Referenced by (5)

Full triples — surface form annotated when it differs from this entity's canonical label.

5G Core → hasComponent → Network Slice Selection Function ⓘ

Access and Mobility Management Function → interfacesWith → Network Slice Selection Function ⓘ

Network Slice Selection Function → manages → Network Slice Selection Function self-linksurface differs ⓘ

this entity surface form: Allowed NSSAI

Network Repository Function → interactsWith → Network Slice Selection Function ⓘ

Unified Data Repository → accessedBy → Network Slice Selection Function ⓘ