Use Case Name

A1 Adapter and Policy Management Extension (R8 Honolulu)

 John Keeney Michela Bevilacqua

Use Case Overview & Description

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.

Use Case Key Information

TOPICInformation
Requirements ProposalRequirements S/C Proposal: A1 Adapter and Policy Management Extension (ORAN/ONAP/3GPP Harmonization)
Project WIKI pageO-RAN A1 Policies in ONAP & This Page
Prior Project "Base" WikiONAP/3GPP & ORAN Alignment: A1 Adapter extensions (Guilin)
Meetings Register & Recordings

ONAP/O-RAN-SC/SMO Meetings

Requirements Ticket

REQ-457 - Getting issue details... STATUS

Key Use Case Leads & Contacts

USE CASE LEAD:  John Keeney

USE KEY CONTACTS: Michela Bevilacqua

CCSDK Requirement/Epic

JIRA Ticket for Epic for A1 Policy Management in Honolulu

CCSDK-2991 - Getting issue details... STATUS

ONAP Arch Committee Review

JIRA Ticket for Review in ArchCom

ONAPARC-642 - Getting issue details... STATUS
2020-12-01 ONAP Architecture Subcommittee Meeting - Approved

Recording:

A1PolicyFunctions_Honolulu_Archcom_20201201.mp4

Slides: 

Function/Integration
Test environment
Demo of OSC NONRTRIC & ONAP A1 functions at LFN Developer & Testing Forum - Feb 2021
Slides & Video: 2021-02-03 - ONAP: Demo: O-RAN A1 Policy & Non-RealTime-RIC automated test/demo environment  
Integration Tests

JIRA Ticket for Epic for Integration Tests

REQ-626 - Getting issue details... STATUS


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.

Development Status

PROJECTPTLUser Story / EpicRequirement
A&AI

William Reehil

N/A


AAF

Jonathan Gathman

N/A
APPC

Takamune Cho

N/A


CLAMP

Gervais-Martial Ngueko

N/A
CC-SDK

Dan Timoney

Extend existing A1 Adapter and A1 Policy Management functionality in CCSDK

CCSDK-2991
DCAE

Vijay Venkatesh Kumar

N/A
DMaaP
Mandar Sawant
N/A
External API

Adrian OSullivan

N/A
HOLMES
Guangrong Fu
N/A
MODELING

Hui Deng

N/A

Multi-VIM / Cloud

Bin Yang

N/A
OOF

krishna moorthy

N/A
OOM

Sylvain Desbureaux

N/A
POLICY

Jim Hahn

N/A
PORTAL

Sunder Tattavarada

N/A
SDN-C
Dan Timoney

Extend existing A1 Adapter and A1 Policy Management functionality in SDNC deployments


SDC

Christophe Closset

N/A
SO

Seshu Kumar Mudiganti

N/A
VID

Ikram Ikramullah

N/A
VF-C

Yuanhong Deng

N/A
VNFRQTS
Steven Wright
N/A
VNF-SDK
Weitao Gao
N/A
CDS

Yuriy Malakov

N/A

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. 



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

Synchronize A1 Policy Information in RAN


A1 Policy Type / Instance Operations

A1 Policy Instance Status Operations

Other Impacts

Affected ONAP Functions:

  • SDNC / CCSDK only

Integration of bordering ONAP components:

  • TBC

Interfaces:

  • Northbound Interface
    • 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
    • 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 v2.1 (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

Use Case Functional Definitions

Use Case Title

A1 Adapter and Policy Management Extension

Actors (and System Components)

SDNC / CCSDK - A1 Adapter & A1 Policy Management Service

Description

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.

Points of Contact


John Keeney Michela Bevilacqua


Preconditions

N/A

Triggers / Begins when

N/A

Steps / Flows (success)


Post-conditions


Alternate / Exception Paths


Related Use Cases

TBC

Assumptions

None

Tools / References / Artifacts

See additional information on this page

TESTING

  • Test use-cases:

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

Current Status

  • None yet

End to End flow to be Tested

  • Currently being defined

Test Cases and Status

  • Currently being defined


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