5G • Services
NSSMF
Network Slice Subnet Management Function
Domain-specific management function provisioning slice resources in RAN, Transport, or Core domains.
Technical Explanation
The NSSMF manages individual subnets: RAN-NSSMF (configures gNodeB PRB quotas and scheduling priorities), Core-NSSMF (spins up containerized SMF/UPF instances), and Transport-NSSMF (programs SDN routers and MPLS/SRv6 tunnels).
Key Functions
- Provisions domain-specific slice resources in RAN, Core, or Transport
- RAN-NSSMF configures gNodeB scheduler weights and PRB partitions
- Core-NSSMF instantiates dedicated cloud-native microservice pods
Specifications
3GPP TS 28.530, TS 28.531
Interfaces
OSS
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