ONAP/3GPP & ORAN Alignment: A1 Adapter extensions
- Michela Bevilacqua
- John Keeney (Ericsson EST)
Use Case Name
A1 Adapter Extensions | @Michela Bevilacqua , @John Keeney (Ericsson EST) |
- 1 Use Case Name
- 2 Use Case Key Information
- 3 Business Driver
- 4 Development Status
- 5 Owners
- 6 Background
- 7 Enhancements for Guilin Release
- 8 Use Case Functional Definitions
- 9 Other Impacts
- 10 Testing
- 11 Use Case Functional Definitions
- 12 News & Updates:
Use Case Key Information
Topic | Description | Link |
|---|---|---|
Wiki Page | Documentation | |
Architecture Subcommittee | Presentations and JIRA Tickets for Architecture Subcommittee made May 26, 2020 | ONAPARC-580: Guilin-R7 ArchCom Review (AR-0010-R7-052020) A1 Adapter ExtensionClosed |
5G Use Case Requirement | JIRA Ticket for Guilin Use Case Requirements | REQ-352: Extend ORAN A1 Adapter and add A1 Policy Management - GuilinDone |
CCSDK Requirement/Epic | JIRA Ticket for Epic for A1 Adapter Evolution in Guilin | |
CCSDK Requirement/Epic | JIRA Ticket for Epic for A1 Policy Management in Guilin | |
Integration Story | JIRA Ticket for User Story for Integration testing with OSC A1 simulator | INT-1654: Test A1 Adapter connection to OSC A1 SimulatorClosed |
CSIT Story | Add CSIT tests to show A1 Policy end-to-end flow - Guilin | |
CCSDK A1 Policy Management Service NBI / API | JIRA Ticket for CCSDK A1 Policy Management Service NBI/API - Guilin | CCSDK-2489: Unified REST & DMaaP NBI for A1 Policy Management - A1 GuilinClosed |
Deployment (A1 Adapter) | Story for deploying A1 adapter in Guilin (SDNC, CCSDK, OOM) | |
Deployment (A1 Policy Management) | Story for A1 Policy Management in Guilin (OOM) | CCSDK-2492: Deployment of A1 Policy Management Service - A1 GuilinClosed |
Testing | Story for TEST Release Requirement (+ linked resources) | |
API Documentation | Stories for Documentation (A1 Policy Management Service & A1 Adapter) |
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.
BUSINESS IMPACT- Continuing the convergency between ONAP and ORAN initiated in Rel 6, A1 interface can be used by all service providers and avoid duplicate development effort.
.BUSINESS MARKETS -Enhanced A1 capabilities, once developed, will be useable 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
PROJECT | PTL | User Story / Epic | Requirement |
A&AI | @James Forsyth | NO IMPACT | |
AAF | @Jonathan Gathman | NO IMPACT | |
APPC | @Takamune Cho | NO IMPACT | |
CLAMP | @Gervais-Martial Ngueko | TBC | |
CC-SDK | @Dan Timoney |
| |
DCAE | @Vijay Kumar | NO IMPACT | |
DMaaP | @Mandar Sawant | NO IMPACT | |
External API | @Matthieu Geerebaert | NO IMPACT | |
MODELING | @Hui Deng | TBC | |
Multi-VIM / Cloud | @Bin Yang | NO IMPACT | |
OOF | @Shankaranarayanan Puzhavakath Narayanan | TBC | |
POLICY | @Pamela Dragosh | NO IMPACT | |
PORTAL | @Manoop Talasila | NO IMPACT | |
SDN-C | @Dan Timoney |
| |
SDC | @Ofir Sonsino | NO IMPACT | |
SO | @Seshu Kumar Mudiganti | NO IMPACT | |
VID | @ittay | NO IMPACT | |
VNFRQTS | @Steven wright | NO IMPACT | |
VNF-SDK | @victor gao | NO IMPACT | |
CDS | @Yuriy Malakov | NO IMPACT |
Owners
@John Keeney (Ericsson EST)
@Michela Bevilacqua
Background
O-RAN A1 Interface:
The O-RAN architecture introduces a new management interface - “A1 interface” - between the network management system and the radio access network (RAN)
A1-AP (Application Protocol) specified by O-RAN Alliance WG2
A1 interface enables vendor-agnostic policy-based guidance (“A1 Policies”) to be sent to underlying RAN elements from the management system.
“A1-EI” will also support transmission of enrichment information from the management platform to the RAN elements (Still being defined – currently out of scope)
“A1-ML/AI” may also assist with ML Model management in the RAN (Still being defined – currently out of scope)
The A1 interface connects Non-RealTime-RIC logical function in OAM/SMO layer with the Near-RealTime-RIC logical function in the RAN.
A1 in O-RAN Architecture for Disaggregated RAN
