Table of Contents

Use Case Name

Use Case Key Information

Business Driver

EXECUTIVE SUMMARY - This requirement enhances the A1 adapter/interface capabilities provided in Rel 6 as part of  5G/ORAN & 3GPP Standards Harmonization requirement ( REQ-38).   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. Planned enhancements for Rel 7 include additional support for managing A1 Policies, multiple A1 targets in the RAN, multi-version support for different A1 targets, and secure TLS communication.

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• Implemented as an SDNC/CCSDK extension to terminate & expose A1 interface
• https://wikilf-onap.onapatlassian.orgnet/wiki/display/DW/A1+Adapter+in+ONAP
• Developed for Release Requirement (REQ-38): 5G / ORAN & 3GPP Standards Harmonization
• Can be used by other ONAP functions to perform A1 Policy Operations over A1 Interface
• Provides DMaaP northbound interface, and REST (A1) southbound interface

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A1 Policies - Northbound Interface (REST & DMaaP) Proposed

• See

  Jira Legacy
  server System Jira columns key,summary,type,created,updated,due,assignee,reporter,priority,status,resolution serverId 4733707d-2057-3a0f-ae5e-4fd8aff50176 key CCSDK-2489

    and Open API (yaml)

Policy Types / Policy Instances / Policy Status Operations  (REST)

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• Guilin: None required – Studies only
  • Stretch Goal: “Hello world” demonstrations with other ONAP components
• Honolulu: A&AI, RuntimeDBConfiguration & Persistency Service, DCAE, CLAMP, Policy. (TBC)
  • Will form part of cross-project 5G integration use cases envisioned for Honolulu (TBC)

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

Testing

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Test use-cases:

• Synchronize A1 Policy Information in RAN
• A1 Policy Type / Instance Operations
• A1 Policy Instance Status Operations
• See REQ-447 and linked resources for more information on TEST Release Requirements

Test variations:

• A1 Adapter with/without A1 Policy Management Service
• A1 versions:
  • O-RAN Alliance (spec) v1.1.3
  • O-RAN-SC A1 (non-spec) v2.1.0

OSC A1 Simulator: 

• https://docs.o-ran-sc.org/projects/o-ran-sc-sim-a1-interface/en/latest/
• https://gerrit.o-ran-sc.org/r/gitweb?p=sim/a1-interface.git
• https://wiki.o-ran-sc.org/display/RICNR/Release+B
• https://wiki.o-ran-sc.org/pages/viewpage.action?pageId=20873402#ReleaseBBuild/Run-RunNear-RTRICA1SimulatorDockerContainers

Integration Story:

• Jira Legacy
  server System Jira columns key,summary,type,created,updated,due,assignee,reporter,priority,status,resolution serverId 4733707d-2057-3a0f-ae5e-4fd8aff50176 key INT-1654

Current Status

End to End flow to be Tested

Test Cases and Status

Use Case Functional Definitions

News & Updates:

• 26 May 2020 - GO decision from Architecture Sub-Committee: Presentation:
    

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  name 20200525 - A1Extensions - ONAP ArchCom - JohnKeeney.pdf height 150

• 24 Jun 2020 - Presentation to LFN vDTF (June 2020): "A1 Adapter in OSC and ONAP -Converging A1 Control in ONAP (Guilin)"
    

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  name 20200624 LFN DTF ONAP-A1 JohnKeeney.pdf height 150