7 Specification level requirements

28.3113GPPManagement and orchestrationNetwork policy management for mobile networks based on Network Function Virtualization (NFV) scenariosRelease 17TS

Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM

7.1 Requirements

REQ-POM-FUN-01

The IRPAgent shall provide the capability to allow the IRPManager to create the network policy.

REQ-POM-FUN-02

The IRPAgent shall provide the capability to allow the IRPManager to delete the network policy.

REQ-POM-FUN-03

The IRPAgent shall provide the capability to allow the IRPManager to update the network policy.

REQ-POM-FUN-04

The IRPAgent shall provide the capability to allow the IRPManager to query the network policy.

REQ-POM-FUN-05

The IRPAgent shall provide the capability to allow the IRPManager to activate the network policy.

REQ-POM-FUN-06

The IRPAgent shall provide the capability to allow the IRPManager to deactivate the network policy.

REQ-POM-FUN-07

The IRPAgent should notify the IRPManager when there is a network policy conflict.

7.2 Actor roles

See detailed actors and roles for each use case in clause 7.4.

7.3 Telecommunications resources

See detailed telecommunication resources for each use case in clause 7.4.

7.4 Use cases

7.4.1 Create a policy in the context of NFV

Use Case Stage	Evolution / Specification	<<Uses>> Related use
Goal	To create a policy such as deploying the SBC from IMS and P-GW from EPC in the same Data Centre.
Actors and Roles	IRPManager as user
Telecom resources	3GPP management system (NM, EM).
Assumptions	3GPP management systems are running normally, scenarios and policy requirements are clearly defined.
Pre conditions	The systems is correctly configured and normally running.
Begins when	The IRPManager decides to create a policy.
Step 1 (M)	The IPRManager makes a decision to create a network policy according to the network requirements, such as deploying the SBC.
Step 2 (M)	After the completion of the policy creation process, the IRPAgent informs the IRPManager on the result of the process.
Ends when	Ends when all mandatory steps identified above are successfully completed or when an exception occurs.
Exceptions	One of the steps identified above fails.
Post Conditions	The policy is created and stored in the IRPAgent.
Traceability	REQ-POM-FUN -01

7.4.2 Delete a policy in the context of NFV

Use Case Stage	Evolution / Specification	<<Uses>> Related use
Goal	To delete a policy such as deploying the SBC from IMS and P-GW from EPC in the same Data Center.
Actors and Roles	IRPManager as user
Telecom resources	3GPP management system (NM, EM).
Assumptions	3GPP management systems are running normally, scenarios and policy requirements are clearly defined.
Pre conditions	The systems is correctly configured and normally running. There is a network policy stored in the IRPAgent.
Begins when	The IRPManager decides to delete a policy.
Step 1 (M)	The IPRManager makes a decision to delete the existing policy.
Step 2 (M)	After the completion of the policy deletion process, the IRPAgent informs the IRPManager on the result of the process.
Ends when	Ends when all mandatory steps identified above are successfully completed or when an exception occurs.
Exceptions	One of the steps identified above fails.
Post Conditions	The policy is deleted in the IRPAgent.
Traceability	REQ-POM-FUN -02

7.4.3 Update a policy in the context of NFV

Use Case Stage	Evolution / Specification	<<Uses>> Related use
Goal	To update an existing network policy.
Actors and Roles	IRPManager as user
Telecom resources	3GPP management system (NM, EM).
Assumptions	3GPP management systems are running normally, scenarios and policy requirements are clearly defined.
Pre conditions	The systems is correctly configured and normally running. There is a network policy stored in the IRPAgent.
Begins when	The IRPManager decides to update a policy.
Step 1 (M)	The IPRManager makes a decision to update the existing policy.
Step 2 (M)	After the completion of the policy update process, the IRPAgent informs the IRPManager on the result of the process.
Ends when	Ends when all mandatory steps identified above are successfully completed or when an exception occurs.
Exceptions	One of the steps identified above fails.
Post Conditions	The policy is updated and stored in the IRPAgent.
Traceability	REQ-POM-FUN -03

7.4.4 Query a policy in the context of NFV

Use Case Stage	Evolution / Specification	<<Uses>> Related use
Goal	To query an existing network policy.
Actors and Roles	IRPManager as user
Telecom resources	3GPP management system (NM, EM).
Assumptions	3GPP management systems are running normally, scenarios and policy requirements are clearly defined.
Pre conditions	The systems is correctly configured and normally running. There is a network policy stored in the IRPAgent.
Begins when	The IRPManager decides to query a policy.
Step 1 (M)	The IPRManager makes a decision to query the existing policy.
Step 2 (M)	After the completion of the policy query process, the IRPAgent informs the IRPManager on the result of the process.
Ends when	Ends when all mandatory steps identified above are successfully completed or when an exception occurs.
Exceptions	One of the steps identified above fails.
Post Conditions	The policy information is returned to the IPRManager.
Traceability	REQ-POM-FUN -04

7.4.5 Activate a policy in the context of NFV

Use Case Stage	Evolution / Specification	<<Uses>> Related use
Goal	To activate an existing network policy.
Actors and Roles	IRPManager as user
Telecom resources	3GPP management system (NM, EM).
Assumptions	3GPP management systems are running normally, scenarios and policy requirements are clearly defined.
Pre conditions	The systems is correctly configured and normally running. There is a network policy stored in the IRPAgent.
Begins when	The IRPManager decides to active a policy.
Step 1 (M)	The IPRManager makes a decision to active the existing policy.
Step 2 (M)	After the completion of the policy activation process, the IRPAgent informs the IRPManager on the result of the process.
Ends when	Ends when all mandatory steps identified above are successfully completed or when an exception occurs.
Exceptions	One of the steps identified above fails.
Post Conditions	The policy is activated in the IRPAgent.
Traceability	REQ-POM-FUN -05

7.4.6 Deactivate a policy in the context of NFV

Use Case Stage	Evolution / Specification	<<Uses>> Related use
Goal	To query an existing network policy.
Actors and Roles	IRPManager as user
Telecom resources	3GPP management system (NM, EM).
Assumptions	3GPP management systems are running normally, scenarios and policy requirements are clearly defined.
Pre conditions	The systems is correctly configured and normally running. There is an active network policy stored in the IRPAgent.
Begins when	The IRPManager decides to deactive a policy.
Step 1 (M)	The IPRManager makes a decision to deactive the existing policy.
Step 2 (M)	After the completion of the policy deactivation process, the IRPAgent informs the IRPManager on the result of the process.
Ends when	Ends when all mandatory steps identified above are successfully completed or when an exception occurs.
Exceptions	One of the steps identified above fails.
Post Conditions	The policy is deactivated in the IRPAgent.
Traceability	REQ-POM-FUN -06

7.4.7 Reporting policy conflicts in the context of NFV

Use Case Stage	Evolution / Specification	<<Uses>> Related use
Goal	To query an existing network policy.
Actors and Roles	IRPManager as user
Telecom resources	3GPP management system (NM, EM).
Assumptions	3GPP management systems are running normally, scenarios and policy requirements are clearly defined.
Pre conditions	The systems is correctly configured and normally running. There is a network policy stored in the IRPAgent.
Begins when	The IRPManager decides to update a policy.
Step 1 (M)	The IPRManager makes a decision to query the existing policy.
Step 2 (M)	After the completion of the policy conflicts notification process, the IRPAgent informs the IRPManager on the result of the process.
Ends when	Ends when all mandatory steps identified above are successfully completed or when an exception occurs.
Exceptions	One of the steps identified above fails.
Post Conditions	The policy conflicts notification is returned to the IRPManager.
Traceability	REQ-POM-FUN -07