B.2 State handling of NetworkSliceSubnet instance

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

A NetworkSliceSubnet instance is a logical object in the management system that represents a complex grouping of resources that may be in various states. At any time the management system needs to know the state of an NetworkSliceSubnet instance.

The ITU-T X.731 [18], to which [17] refers, has defined the inter-relation between the administrative state and operational state of systems in general.

Figure B.2.1: Combined NetworkSliceSubnet instance state diagram

The interactions specified under the column "The state transition events and actions" of "NNetworkSliceSubnet instanceSSI state transition table" below shall be present for the state transition.

Table B.2.1: The NetworkSliceSubnet instance state transition table

Trigger number

The state transition events and actions

0

Operation allocateNssi results in the creation of NetworkSliceSubnet instance. The administrative state is set to LOCKED and operationalState is set to DISABLED

— or –

CM operation creates NetworkSliceSubnet instance. The administrative state is set to LOCKED and operationalState is set to DISABLED

1

CM operation sets administrative state to UNLOCKED.

2

CM operation sets administrative state to LOCKED

2a

CM operation sets administrative state to SHUTTING DOWN

2b

The last user of the NetworkSliceSubnet instance stops using the NetworkSliceSubnet instance

3

All constituent NetworkSliceSubnet instances (identified by NetworkSliceSubnet.networkSliceSubnetRef) change state to UNLOCKED and ENABLED.

4

At least one constituent NetworkSliceSubnet instance (identified by NetworkSliceSubnet.networkSliceSubnetRef) changes state to LOCKED

— or –

At least one constituent NetworkSliceSubnet instance (identified by NetworkSliceSubnet.networkSliceSubnetRef) changes state to DISABLED

5

Operation deallocateNssi results in the deletion of NetworkSliceSubnet instance

— or –

CM operation deletes NetworkSliceSubnet instance.

Annex C (normative):
Void

Annex D (normative):
OpenAPI definition of the NR NRM