DESCRIPTION
The O-RAN Alliance defines a new management interface "A1" for 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 are defined by the O-RAN Alliance as "A1 Policies".
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 (Radio Access Network) 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 include service and policy management, RAN analytics and model-training for the Near-RealTime RICs. The A1 Policy functions project provides concepts, specifications, architecture and reference implementations as defined and described by the ONAP architecture.
The A1 Policy functions implementation will communicate with Near-RealTime RIC elements in the RAN via the A1 interface. Using the A1 interface, the A1 Policy functions will facilitate the provision of policies for individual UEs or groups of UEs; monitor and provide basic feedback on policy state from near-RealTime RICs; provide enrichment information as required by Near-RealTime RICs; and facilitate ML model training, distribution and inference in cooperation with the Near-RealTime RICs.
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).
The BASE PAGE For this Use Case is: O-RAN A1 Policies in ONAP
ROADMAP - Use Case Evolution per Release
The following table links to the development for this use case in a particular release:
| RELEASE | Link to Use Case |
|---|---|
| R1 Amsterdam | Use Case did not exist yet |
R2 Beijing | Use Case did not exist yet |
| R3 Casablanca | Use Case did not exist yet |
| R4 Dublin | Use Case did not exist yet |
| R5 El Alto | MAINTENANCE RELEASE (No Use Case work) |
| R6 Frankfurt | A1 Adapter in ONAP |
| R7 Guilin | ONAP/3GPP & ORAN Alignment: A1 Adapter extensions |
| R8 Honolulu | R8 A1 Adapter and Policy Management Extension |
| R9 Istanbul | R9 A1 Policy Function Extensions |
| R10 Jakarta |
PRIOR BASE PAGE
The "Base page" for this Use Case is at: O-RAN A1 Policies in ONAP
KEY LINKS & KEY INFORMATION
The following table shows some Key Links and Key Information for this Use Case:
| Topic | Description |
|---|---|
| Key Use Case Leads | John Keeney , Michela Bevilacqua |
| Key Use Case Contacts | |
| Meetings Register & Recordings |
OVERVIEW SLIDES & PRESENTATIONS/DEMOS:
This table has overview slides of the Use Case and presentations or demos
| Topic | Description |
|---|---|
| Overview Slides | |
| Overview Presentation | |
| Demo |