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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 ( JiraserverONAP JIRAcolumnskey,summary,type,created,updated,due,assignee,reporter,priority,status,resolutionserverId425b2b0a-557c-3c0c-b515-579789cceedbkeyREQ-38) and Rel 7 - Guilin ( JiraserverONAP JIRAserverId425b2b0a-557c-3c0c-b515-579789cceedbkeyREQ-352). A1 Adapter functionality was introduced in Frankfurt. In Guilin The A1 adapter was improved and a A1 Policy Management Service was added.

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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 ( JiraserverONAP JIRAcolumnskey,summary,type,created,updated,due,assignee,reporter,priority,status,resolutionserverId425b2b0a-557c-3c0c-b515-579789cceedbkeyREQ-38) and Rel 7 - Guilin ( JiraserverONAP JIRAserverId425b2b0a-557c-3c0c-b515-579789cceedbkeyREQ-352). A1 Adapter functionality was introduced in Frankfurt. In Guilin The A1 adapter was improved and a A1 Policy Management Service was added.

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Use cases define how different users interact with a system under design. 

Enhancements for Honolulu Release

• Add support for O-RAN Alliance A1-AP v2.0 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 manuipulation can be incorporated into other use cases (e.g. Slicing, OOF) - TBC

A1 Policies - Northbound Interface (REST & DMaaP) Proposed

• Changes proposed for A1 Policy Management Service NBI (not-backward compatible)
  • Coming Soon!

Use Case Functional Definitions

Synchronize A1 Policy Information in RAN

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A1 Policy Type / Instance Operations

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A1 Policy Instance Status Operations

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Other Impacts

Affected ONAP Functions:

• SDNC / CCSDK only

Integration of bordering ONAP components:

• TBC

Interfaces:

• Northbound Interface – See earlier section
  • Add/Change SDNC NBI for A1 Policy Management (REST & DMaaP)
    • REST (New version)
    • DMaaP (New version)
• Configuration
  • File based, supports dynamic refresh - including K8s ConfigMap (existing)
  • CBS/Consul (existing)
  • REST (New)
• Southbound Interfaces – See earlier section
  
  • OSC A1 v2.1 (Existing)
  • O-RAN A1 v1.1 (Existing)
  • O-RAN A1 v2.0 (New)

Usage outside ONAP:

• Used in O-RAN-SC NONRTRIC Project (Downstream)
• Southbound Interface: O-RAN A1 Interface + Information Model is specified and maintained by O-RAN Alliance

Modelling Impacts:

• TBC

Other:

• Update Documentation with A1 interface aspects
• Update Integration & Existing Test requirements

Testing

Test use-cases:

• Synchronize A1 Policy Information in RAN
• A1 Policy Type / Instance Operations
• A1 Policy Instance Status Operations

Use Case Functional Definitions

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