Use Case Overview & Description
The objective of this case is to develop an ONAP-based SON platform using the ONAP Optimization Framework (OOF). The use case focuses on the various information models and flows/interfaces between components to enable various SON functions to be realized. It also focuses on platform enhancements such as enhancements to the Control Loop framework (e.g., Control Loop Co-ordination, different types of targets for Control Loops, etc.), enabling ML-based SON, etc.
Use Case Key Information
|Requirements Proposal||This is a link to the requirements proposal made on the Requirements Sub-committee||ONAP_OOF_SON_R10_Requirements_2021117_v1.1.pptx|
|Architecture S/C info||Information on the Architecture sub-committee presentation|
|Prior Project "Base" Wiki||Link to the Honolulu release page for this use case|
|Requirements Jira (REQ-###) Ticket||Link to the REQ Jira ticket for this use case|
|Key Use Case Leads & Contacts|
USE CASE LEAD: N.K. Shankaranarayanan, krishna moorthy
USE CASE KEY CONTACTS: N.K. Shankaranarayanan
|Meetings Register & Recordings||Link to Use Case Team meetings.|
SON (Self-Organizing Networks) functionality is an essential part of existing 4G mobility networks, and will be even more critical for 5G. SON enables automation to improve network performance and efficiency, improve user experience, and reduce operational expenses and complexity. The objective of the OOF-SON (new name for OOF-PCI) use case is to develop an ONAP-based SON platform using the ONAP Optimization Framework (OOF). We have taken a phased approach since SON is complex, and SON for 5G is still evolving. We started with the Physical Cell Identity (PCI) optimization SON use case in Casablanca, then added some centralized Automated Neighbor Relations (ANR) aspects in Dublin. In Frankfurt, we addressed some enhancements such as basic CM-notify handling (as preparation for O-RAN alignment), adaptive SON, etc. In Guilin, we introduced use of AI/ML by onboarding an offline-trained ML-model to ONAP which will provide additional inputs to PCI optimization based on historical PM data, and stabilized the functionality in Honolulu. In Istanbul, we will align FM messages with relevant standards, move to new 3GPP NRM-based yang models and leverage CPS for RAN configuration.
SON is an essential feature in mobility networks, and relevant to every operator. Any ONAP-based network deployment for 5G will benefit from an ONAP-based SON solution, which provides a disaggregation of SON functions into modules aligned with the ONAP architecture. Operators and vendors will both benefit from the ability of vendors to bring best-in-class solutions to each module, while leveraging the benefits of a community-supported open platform. This will enable faster development of innovative solutions. The approach taken could very well be evolved to address SON use cases whose scope extends beyond just the RAN.
SON for 5G is relevant to all 5G operators and markets.
SON functions reduce Opex since the automated self-organizing functions are an efficient approach to continuously optimize network configurations to improve performance and respond to network conditions.
Organization Mgmt, Sales Strategies
There are no additional organizational management or sales strategies for this beyond whatever is required for ONAP deployment to support 5G.
|PROJECT||PTL||User Story / Epic||Requirement|
|CC-SDK||(Carryover work): Incorporate new Yang model in edit-config to RANSim. Stretch goal for processing CMNotify update.|
|DCAE||Develop stndDefined VES message formats for FM/PM/CM. |
Stretch goal to modify SON-Handler MS and RAN-Sim for FM/PM.
|External API||No impact|
|MODELING||No impact, CPS related modeling aspects will be covered by CPS project|
|CPS||Models, and interface to store/retrieve OOF SON use case related data|
List of PTLs:Approved Projects
*Each Requirement should be tracked by its own User Story in JIRA
USE CASE DIAGRAM
Use cases define how different users interact with a system under design. Each use case represents an action that may be performed by a user (defined in UML as an Actor with a user persona).
Use Case Functional Definitions
Use Case Title
Title of the Use Case
Actors (and System Components)
The list of Actors and System Components that participate in the Use Case
Short overview of the Use Case
Points of Contact
Authors and maintainers of the Use Case.
Use Case Lead, Key Use Case members and code contributors.
A list of conditions that are assumed to be true before the Use Case is invoked
Includes description of Information Consumed
Triggers / Begins when
Describes the trigger for beginning the Use Case
Steps / Flows (success)
Describes the sequence of steps and interactions that occur during the Use Case (may include: description, data exchanges, functionality, state changes)
Interaction diagrams may be included or referenced
The expected results of the execution of the Use Case
Includes description of Information Produced
Alternate / Exception Paths
Description of any exceptions or special process that could occur during Use Case
Related Use Cases
List of the Use Cases referenced by this Use Case
Describes any assumptions that are made for this use case
Tools / References / Artifacts
List of any tools or reference material associated with this Use Case as well as any JIRA trace-ability.
List of any associated diagrams or modelling artifacts associated with the Use Case
- High visibility bugs
- Other issues for testing that should be seen at a summary level
- Where possible, always include JIRA links
End to End flow to be Tested
**This should be a summary level Sequence diagram done in Gliffy**
Test Cases and Status
|1||There should be a test case for each item in the sequence diagram|
NOT YET TESTED
|2||create additional requirements as needed for each discreet step|
|3||Test cases should cover entire Use Case|
|Mar 29, 2021|
Presentation given to Requirements Sub-committee
|May 21, 2021||Yang models and CPS APIs for SON (links)|
|Nov 3, 2021||ITU-T FG AN presentation on SON Use Case|