B.1 NetworkSlice instance state handling
28.5413GPP5G Network Resource Model (NRM)Management and orchestrationStage 2 and stage 3TS
A NetworkSlice 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 NetworkSlice 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.1: Combined NetworkSlice instance state diagram
The interactions specified under the column "The state transition events and actions" of " NetworkSlice instance state transition table" below shall be present for the state transition.
Table B.1: The NetworkSlice instance state transition table
|
Trigger number |
The state transition events and actions |
|
0 |
Operation allocateNsi results in the creation of a NetworkSlice instance. The administrative state is set to LOCKED and operationalState is set to DISABLED — or – CM operation creates a NetworkSlice 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 NetworkSlice instance stops using the NetworkSlice instance |
|
3 |
The related NetworkSliceSubnet instance (identified by NetworkSlice.networkSliceSubnetRef) changes state to UNLOCKED and ENABLED. |
|
4 |
The related NetworkSliceSubnet instance (identified by NetworkSlice.networkSliceSubnetRef) changes state to LOCKED — or – The related NetworkSliceSubnet instance (identified by NetworkSlice.networkSliceSubnetRef) changes state to DISABLED |
|
5 |
Operation deallocateNsi results in the deletion of NetworkSlice instance — or – CM operation deletes NetworkSlice instance |