L.2 GSMA GST, ServiceProfile and sliceProfile

28.5413GPP5G Network Resource Model (NRM)Management and orchestrationStage 2 and stage 3TS

The GSMA GST is used as the SLA information for the communication between the NSC (e.g., vertical industry) and the NSP. The SLA requirements can be fulfilled from management aspect and control aspect in a coordinated way. The SLS includes ServiceProfile information model.

As shown in figure L.2.1, the GST parameters [50] are used as input to ServiceProfile. The ServiceProfile which defines the service requirements related to a particular NSC, is translated into the SliceProfile. In particular, the attributes captured in the ServiceProfile are mapped to TopSliceSubnetProfile attributes. Based on the TopSliceSubnetProfile attributes, the corresponding requirements for the dedicated domain specific network slice subnets are defined. For example, the CNSliceSubnetProfile attributes are used to carry 5GC domain requirements, the RANSliceSubnetProfile attributes are used to carry NG-RAN domain requirements, and the TN requirements are derived and provide input to the TN domain.

As shown in Table L.2.1 some of the attributes in CNSliceSubnetProfile and RANSliceSubnetProfile parameters can be translated to configurable parameters related to network function behaviour to satisfy SLS of the service in the control plane. While other information (e.g., delay tolerance, deterministic communication support) in CNSliceSubnetProfile and RANSliceSubnetProfile are kept at OAM domain and is used to determine the overall behaviour of the network slice.

The following table show the translation of GST attributes.

Table L.2.1: GST translation

GST parameters	ServiceProfile attributes	SliceProfile Parameter			Configuration Parameters
		TopSlice SubnetProfile attributes	RANSlice SubnetProfile attributes	CNSlice SubnetProfile attributes
Maximum number of UEs	maxNumberofUEs	maxNumberofUE	maxNumberofUEs	maxNumberofUEs	attributes in NSACF
Maximum number of PDU sessions	maxNumberofConns	maxNumberofPDUSessions	N/A	maxNumberofPDUSessions	TBD
Downlink maximum throughput per UE	dLThptPerUE	dLThptPerUE	dLThptPerUE	dLThptPerUE	TBD
Uplink maximum throughput per UE	uLThptPerUE	uLThptPerUE	uLThptPerUE	uLThptPerUE	TBD

Editor’s note: The list of exact configurable parameters is to be revisited depending on the requirements from SA2 and RAN WGs.

NOTE: Void.

Figure L.2.1 Relation between GSMA GST, ServiceProfile and SliceProfile

Annex M (normative):
Managed NF Service state handling