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Contents

Table of Contents

Summary

Primary Goals for Non-RealTime RAN Intelligent Controller (Non-RT-RIC)

:

  • The primary goal of Non-RT-RIC is to support intelligent RAN optimization by providing policy-based guidance, ML model management and enrichment information to the near-RT RIC function so that the RAN can optimize, e.g., RRM under certain conditions.
  • It can also perform intelligent radio resource management function in non-real-time interval (i.e., greater than 1 second).
  • Non-RT-RIC applications (rApps) can use data analytics and AI/ML training/inference to determine the RAN optimization actions for which it can leverage SMO services such as data collection and provisioning services of the O-RAN nodes.
  • Non-RT-RIC define and coordinates rApps (Non-RT-RIC applications) to perform Non-RT-RIC tasks.
  • Non-RT-RIC hosts the new R1 interface (between rApps and SMO/NONRTRIC services)

Overall objective for the E Release

:

In the E Release we focus mainly on studying and providing some building blocks to support the emerging Non-RT-RIC Apps ("rApps") and R1 interface concepts from O-RAN.
Support and improvement of functions for the O-RAN A1 interface continue.

E Release Priorities

:

  • ONAP Control Loop -> O-RAN rApp : “The rApp-ification of ONAP Control Loops”
    • Adopt ONAP CL work as a starting point, continue to identify gaps, then extend
    • Identify & motivate where an rApp is different from a CL
    • Types of rApps:
      • Microservice-based rApps
      • Non-Microservice-based rApps
  • NONRTRIC Service Exposure/Gateway -> O-RAN R1 : “The R1-ification of Service Exposure”
    • Service-independent aspects
    • Types of exposure support in R1:
      • Microservice-based rApps & Service
      • Non-Microservice-based rApps & Service
  • Use cases of rApps & Exposing specific Services via R1
    • Requirements drivers & demonstrators
    • O-RU FH recovery (multiple), O-DU Slice Assurance (multiple), Existing Function Tests, various other use cases in ONAP
  • Continued Evolution & Support for A1 functions

E Release Feature Scope

:

  • NONRTRIC Functions:
    • Integrated A1 Adapter from ONAP (A1 Policy (A1-P) controller – mediation)
    • Integrated A1 Policy Management Service from ONAP (A1 Policy (A1-P) controller)
    • rApp/Control Loop Manager (ONAP & OSC)
    • OSC Information Coordinator (controller – Data Management & Exposure & A1 Enrichment Information (A1-EI) Job management)
    • OSC Non-RT-RIC Control Panel (GUI – for A1-P & A1-EI Job management)
    • OSC A1 Simulator (a stateful test stub to simulate near-RT-RIC end of A1 interface – A1-P & A1-EI)
    • Initial OSC APP catalog (for registering/querying APPs)
    • K8S Helm Chart LCM Manager - for APP µServices etc. (ONAP & OSC)
    • Exposure Gateway Functions
    • Coordinated service exposure for R1 interface
    • DMaaP → Information Producer Mediator/Adapter (multiple)
  • In E Release:
    • Deployment, Integration & Configuration– Continued improvements for Docker & Kubernetes
    • Extended/Easier deployment options with OSC IT/DEP project (SMO/NONRTRIC deployment)
    • O-RAN A1-AP evolution (v3.0)
    • Evolution of A1-EI functions to a more generic Information Coordination functions, moving beyond A1-EI
    • Further improvement in security management
    • Re-architect & improve usability of Non-RT-RIC Control Panel (GUI)
    • Extend NONRTRIC Control Panel to sort and filter A1 Policies
    • Extend NONRTRIC Control Panel to sort and filter A1 Enrichment Types/Jobs
    • Extend NONRTRIC Control Panel to configure A1 Policy Management Service
    • Configurable Service Exposure function – Extends/Replaces static exposure gateway in OSC D-release
    • K8S Helm Chart LCM function for App µServices
    • Update NONRTRIC demo/test environment (one-click tests/use-cases, docker & single/multi-node K8s env)
    • OSC e2e integration use case – O-RU-FH-HelloWorld recovery
      • App to instigate O-RU-FH connection recovery after failure – via O-DU
        • Multiple implementation options – standalone µService and/or deployable ONAP-PF policy script
    • OSC e2e integration use case – O-DU-HelloWorld-SliceAssurance
      • Closed loop tuning of RRM policies to assure Slice performance - via O-DU
        • Multiple implementation options – standalone µService and/or deployable ONAP-PF policy script

Architecture for Release E

...


NONRTRIC components

...

  1. Non-RT-RIC Control Panel

  2. Non-RT-RIC (Spring Cloud) Service Gateway
  3. Non-RT-RIC (Kong) Service Exposure Prototyping
  4. A1 Policy Management Service
  5. Information Coordinator Service
  6. DMaaP/Kafka Information Producer Adapters
  7. Initial Non-RT-RIC App Catalogue
  8. A1 Policy Controller / Adapter
  9. Near-RT RIC A1 Simulator
  10. Initial K8S Helm Chart LCM Manager
  11. Test Framework
  12. "Helloworld" O-RU Fronthaul Recovery use case
  13. "Helloworld" O-DU Slice Assurance use case

...

A1 Controller Service above A1 Adaptor Adapter that provides:

  • Unified REST & DMaaP APIs for managing A1 Policies in all near-RT-RICs
  • Operations:
    • Query A1 Policy Types in near-RT-RICs
    • Create/Query/Update/Delete A1 Policy Instances in near-RT-RICs
    • Query Status for A1 Policy Instances
  • Maintains (persistent) cache of RAN’s A1 Policy information
    • Support RAN-wide view of A1 Policy information
    • Streamline A1 traffic
    • Enable (optional) re-synchronization after inconsistencies / near-RT-RIC restarts
    • Added support for multiple near-RT-RICs (& multi-version support)
  • Unified REST & DMaaP NBI
  • Converged ONAP & O-RAN-SC A1 Adapter/Controller functions in ONAP SDNC/CCSDK
    • (Optionally deploy without A1 Adaptor Adapter to connect direct to near-RT-RICs)

Documentation about the service can be found at:

...

Documentation about the service can be found at:

DMaaP/Kafka Information Producer Adapters

...

...

A1 Policy Controller / Adapter (from ONAP CCSDK – Istanbul)

...

Mediation point for A1 interface termination in SMO/NONRTRIC

...

Documentation about the adapter can be found at:Documentation about the service / controller can be found at:

Near-RT-RIC Simulator

...

Stateful A1 test stub

  • Used to create multiple stateful A1 providers (simulated near-rt-rics)
  • Supports A1-Policy (A1-P) and A1-Enrichment Information (A1-EI)
  • Implemented as a Python application
  • Swagger-based northbound interface, so easy to change the A1 profile exposed (e.g. A1 version, A1 Policy Types, A1-EI consumers, etc)
  • All A1-AP versions supported

...