O-RAN A1 Policies in ONAP
KEY INFORMATION
Gerrit: repo: https://gerrit.onap.org/r/admin/repos/ccsdk/oran
Meetings: https://lf-o-ran-sc.atlassian.net/wiki/spaces/RICNR/pages/15073287/Meetings & ONAP/O-RAN-SC/SMO Meetings
Docs: https://docs.onap.org/projects/onap-ccsdk-oran/en/latest/index.html
Email List: ONAP "discuss" mailing list: onap-discuss@lists.onap.org
Related work in OSC: https://lf-o-ran-sc.atlassian.net/wiki/spaces/RICNR
JIRA (Epics):
CCSDK-2991: A1 Adapter and A1 Policy Management Extension - Honolulu - CCSDKClosed
CCSDK-3229: A1 Adapter and A1 Policy Managements Enhancements in Istanbul Release - CCSDKClosed
CCSDK-3617: A1 Adapter and A1 Policy Managements Enhancements in Kohn Release - CCSDKClosed
CCSDK-3809: A1 Adapter and A1 Policy Managements Enhancements in London Release - CCSDKClosed
CCSDK-3909: A1 Adapter and A1 Policy Managements Enhancements in Montreal Release – CCSDKClosed
CCSDK-3965: A1 Adapter and A1 Policy Management Enhancement in NewDelhi Release – CCSDKClosed
CCSDK-4024: A1 Adapter and A1 Policy Management Enhancement in Oslo Release – CCSDKOpen
Requirements (Older):
REQ-38: 5G / ORAN & 3GPP Standards HarmonizationDone (Frankfurt)
REQ-352: Extend ORAN A1 Adapter and add A1 Policy Management - GuilinDone (Guilin)
REQ-722: A1 Policy Functions - IstanbulDone (Istanbul)
PROPOSALS BY RELEASE
The following table shows the progression of the O-RAN A1 Policy functions by release.
RELEASE | WIKI PAGE |
---|---|
R6 Frankfurt | |
R7 Guilin | |
R8 Honolulu | |
R9 Istanbul | |
R10 Jakarta |
GUIDES & DOCS BY RELEASE
The following table shows the developer guides and documentation sites for the O-RAN A1 Policy functions.
RELEASE | WIKI PAGE | Docs |
---|---|---|
R7 Guilin (Q4 2020) | ||
R8 Honolulu (Q2 2021) | ||
R9 Istanbul (Q4 2021) | ||
R10 Jakarta (Q2 2022) | ||
R10 Kohn (Q4 2022) | ||
R11 London (Q2 2023) | ||
R12 Montreal (Q4 2023) | ||
R13 New Delhi | ||
R14 Oslo | O-RAN A1 Policies in ONAP Oslo |
DESCRIPTION
The O-RAN Alliance defines a new management interface "A1" for Radio Access Network (RAN) Management. This interface interconnects a new logical "Non-RealTime RAN Intelligent Controller (Non-RT-RIC)" function in the Service Management & Orchestration (SMO) layer with a new logical "Near-RealTime RAN Intelligent Controller (near-RT-RIC)" function in the RAN. This new A1 interface allows the Non-RT-RIC to provide Policy Guidance to the RAN (near-RT-RIC) to steer its operation. These policies are defined by the O-RAN Alliance as "A1 Policies". The specifications for the A1 Interface, including A1 Policy support, can be found on the O-RAN Alliance Specifications portal
New functions to support A1 Policies have been added to ONAP. The A1 Policy functions are Orchestration and Automation functions for non-real-time intelligent management of RAN functions. The primary goal of the A1 Policy functions is to support non-real-time radio resource management, higher layer procedure optimization, policy optimization in RAN, and providing guidance, parameters, policies and AI/ML models to support the operation of Near-RealTime RIC (RAN Intelligent Controller) functions in the RAN to achieve higher-level non-real-time objectives.
A1 Policy functions form part of a Non-Realtime RIC as defined by O-RAN Alliance. Non-Realtime RIC functions include service and policy management, RAN analytics, and model-training for the Near-RealTime RICs. The ONAP A1 Policy work provides concepts, specifications, architecture and reference implementations for A1 Policy support as defined and described in the O-RAN architecture.
As shown in the Component Architecture diagram below, the A1 Policy functions exist within the ONAP eco-system, leveraging existing infrastructure to support non-real-time control of the RAN (Radio Access Network).
Functional view of ONAP A1 Policy functions
The figure above shows a functional view of the A1 Policy functions in ONAP.
GERRIT
(ONAP) A1 Policy functions: https://gerrit.onap.org/r/admin/repos/ccsdk/oran
(OSC) sim/a1-interface: https://gerrit.o-ran-sc.org/r/admin/repos/sim/a1-interface