Required Information:

 Description of Use Case / Requirement:

Planned enhancements for Rel 8 include: support of new A1 interface version in alignment to O-RAN alliance, common logging/audit. improved CSIT and OOM alignment, easier configuration, an improved NBI, and improved security cert management.

 Owners (one of these should be the Assignee - use @ notation):

JohnKeeney, micbev

Link to HLD/LLD (if any):

• [Architecture Diagram | https://wiki.onap.org/download/attachments/92997136/image2020-11-17_17-7-54.png?version=1&modificationDate=1605632875000&api=v2]
• [Detailed description of planned work - Architecture Sub-Committee presentation | https://wiki.onap.org/download/attachments/92997136/20201201%20-%20ORAN-A1Extensions%20-%20ONAP%20ArchCom.pdf?version=1&modificationDate=1606841669000&api=v2]

Dependency Relationships with Other Projects:

 CCSDK IMPACT: C (Code)

• Impact Type: C (Code)
• Company Engagement: Ericsson-EST, Others tbc.
• Resources: JohnKeeney & team
• Support Status: S (Supported)
• Non-Functional Requirement Support: tbc

SDNC IMPACT: C (Code)

• Impact Type: C (Code)
• Company Engagement: Ericsson-EST, Others tbc.
• Resources: JohnKeeney & team
• Support Status: S (Supported)
• Non-Functional Requirement Support: tbc

Integration Leads (use @ notation): 

JohnKeeney & estsonsan

Full Feature Description:

https://wiki.onap.org/display/DW/R8+A1+Adapter+and+Policy+Management+Extension

Further Information:

 Business Driver

Key Contacts : John Keeney, Michela Bevilacqua

Executive Summary:

O-RAN has defined A1 interface specification in the context of the management of 5G RAN elements to provide intent based policies for optimization of the RAN network performance. This requirement enhances the support for Managing and Mediating O-RAN A1 Policies in ONAP.  This extends work contributed in Rel 6 - Frankfurt (REQ-38) and Rel 7 - Guilin (REQ-352). A1 Adapter functionality was introduced in Frankfurt. In Guilin The A1 adapter was improved and a A1 Policy Management Service was added.

Planned enhancements for Rel 8 include: support of new A1 interface version in alignment to O-RAN alliance, common logging/audit. improved CSIT and OOM alignment, easier configuration, an improved NBI, and improved security cert management.

Business Impact: Continuing the convergence between ONAP and ORAN for A1 Policy interface to used by all service providers.

Business Markets: Enhanced A1 Policy capabilities, once developed, will be usable by any service provider deploying and using ONAP.

Funding/Financial Impacts: A1 interface provides a flexible way for the operator to manage wide area RAN network optimization, reducing capex investment needs.

Organization Mgmt, Sales Strategies: There is no additional organizational management or sales strategies for this use case outside of a service providers "normal" ONAP deployment and its attendant organizational resources from a service provider.

Enhancements for Honolulu Release

• Add support for O-RAN Alliance A1-AP v2.1 specification (A1 Policy only)
• Improve alignment with OOM deployment & configuration options
• Improve alignment with CSIT way of working for function tests
• New REST interface for configuration
• New A1 Policy Management NBI (REST & DMaaP)
• Improved security cert management
• Stretch: Investigate if A1 Policy manipulation can be incorporated into other use cases (e.g. Slicing, OOF) - TBC

Interface Impacts: API / SBI / NBI:

• Northbound API Interfaces
  • Add/Change CCSDK A1 Policy Management Service NBI for A1 Policy Management (REST & DMaaP)
  • The new version of the PMS REST API complies with the ONAP REST API and Zalando style guidelines and fixes some naming inconsistencies.
    • REST (New version)
    • DMaaP (New version)
    • Ref: CCSDK-3077
• Configuration Interfaces:
  • File based, supports dynamic refresh - including K8s ConfigMap (existing)
  • CBS/Consul (existing)
  • REST (New)
    • Ref: CCSDK-2966
• Southbound Interfaces – See earlier section
  • OSC A1 v2.1 (Existing)
  • O-RAN A1 v1.1 (Existing)
  • O-RAN A1 v2.1 (New)
    • (Will be added in A1 Policy Management Service. Ref O-RAN Alliance WG2 A1-AP v2.1 spec (not yet publicly released))