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Cherry release page for the O-RAN Software community   

Welcome to the Cherry release page for the O-RAN Software community          

This page contains all the information specific to the Cherry release

See Requirements and Software Architecture under Committees and Projects for more details on current activities.

Second release capabilities include contributions under the following projects:

Get Bronze

  • Use the master branch of the repos.

Documentation

  • TODO

Cherry Release Timeline

Cherry Timeline


Near real-time RIC X-APPs (RICAPP)

Primary Goals: TODO

Cherry feature scope: TODO 

PTL: Matti Hiltunen

Jira: Count of Epics, User Stories, Tasks, and Issues:  Getting issues...



Near Realtime RAN Intelligent Controller Platform (E2 Interface) (RIC-PLT)

Primary Goals: TODO

Cherry feature scope: TODO 

PTL: Thoralf Czichy

Status TODO

Non-Real-time RIC (A1 Interface) (NONRTRIC)

Primary Goals:

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 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.

Bronze Feature Scope:
Initial design and start implementation of NONRTRIC Platform.
Continue evolution of A1 interface.
Continue evolution of A1 Policy Management functions.
Modeling and implementation of the Non-RealTime RIC aspects of the "Health Check" and "Traffic Steering" use cases

PTL: John Keeney

Jira: Count of Epics ( Getting issues... ), User Stories, Tasks, and Issues:  Getting issues...


OAM (O1 Interface)

Primary Goals: Implementation of O-RAN Alliance OAM Architecture and Interface Specifications.
Bronze Feature Scope: Modeling and implementation of the Health Check use case and Deployment of an SMO.

PTL: Martin Skorupski

Status:  

O-RAN Central Unit (OCU)

Primary Goals: 

The O-CU project provides 5G SA reference implementation according to the O-RAN WG8 documents. In addition we provide the implementation of RRC SDAP PDCP and F1AP module and API between them.

Basic CU functions defined in O-RAN WG8

Support E2E use case defined in O-RAN

Bronze Feature Scope: 

F1

  • support Interface Management procedures
  • support UE Context Management procedures
  • support RRC Message Transfer procedures
  • support System Information Procedures

SDAP

  • support transfer of user plane data;
  • support mapping between a QoS flow and a DRB for both DL and UL;
  • support marking QoS flow ID in both DL and UL packets;
  • support reflective QoS flow to DRB mapping for the UL SDAP data PDUs.


PDCP

  • support transfer of data (user plane or control plane);
  • support maintenance of PDCP SNs;
  • support header compression and decompression using the ROHC protocol;
  • support ciphering and deciphering;
  • support integrity protection and integrity verification;
  • support timer based SDU discard;
  • support reordering and in-order delivery;
  • support out-of-order delivery;

RRC

  • support Broadcast of system information；
  • support RRC connection control；


Ng

  • support PDU Session Management Procedures
  • support UE Context Management Procedures
  • support Transport of NAS Messages Procedures
  • support Interface Management Procedures


E1

  • support Interface Management procedures
  • support Bearer Context Management procedures


PTL: user-a934b

Jira: Count of Epics, User Stories, Tasks, and Issues:

OCU-1 - Getting issue details... STATUS   F1

OCU-2 - Getting issue details... STATUS  SDAP

OCU-3 - Getting issue details... STATUS  PDCP

OCU-4 - Getting issue details... STATUS  RRC

OCU-5 - Getting issue details... STATUS  Ng

OCU-6 - Getting issue details... STATUS  E1


O-DU High

Primary Goals:  Develop Amber release code to enhance O-DU layers source code

Bronze Feature Scope: 

  • O-DU High layers (MAC, RLC and app):
    • Re-align seed code to 3GPP Release 15.3.0
    • Align seed code to WG8 AAD specification and interfaces
    • Implementation of cell broadcast procedure and UE attach procedure (SA mode)
      for FDD mode and FR1 (Numerology = 0, Bandwidth = 20 MHz) and basic scheduler APIs for single UE and single HARQ transmission
  • F1-U interface development
  • F1-C interface enhancement: 
    • Support for following additional F1AP messages:
      • Initial UL RRC Message Transfer
      • UL/DL RRC Message Transfer
      • UE Context Setup Request/Response
    • Enhance F1AP messages:
      • F1AP Setup Request/Response
      • GNB DU Config Update
  • Basic FAPI messages Implementation

Out of Scope:

  • Use cases – Traffic Steering, Health Check related messages and call flows
  • TDD functionality, NSA
  • End to end testing

Limitations/Dependencies:

  • FAPI Implementation – Dependency on O-DU Low to open source WLS files, interface files
  • Testing: Currently only some unit testing can be done due to lack test infrastructure i.e UE or UE simulator, O-RU, O-CU and core components.

PTL:  Sachin Srivastava

Jira: EPICS are mentioned below:

O-DU Low

Bronze Release highlights(Jun.8):

The Bronze Release includes:

  • ORAN WG8 Software Specification compliant DU Low implementation including O-RAN FrontHaul compliant Radio<-> L1 interface, FAPI compliant L1<->L2 interfaces, and a shared memory and buffer management library for efficient L1<->L2 communication
  • Ability to link in a high-performance L1 stack application with advanced 5GNR features including 3GPP TS 38.211, 212, 213, 214 and 215, running on Intel Xeon processor based O-DU hardware, and packaged with a comprehensive functional and performance evaluation framework.

Primary Goals: The O-RAN-SC-ODU LOW project provides reference implementation of ODU-LOW according to the O-RAN AAD specification (WG8) documents. The reference design will follow the open interface toward ODU HIGH, RRU and Accelerator, provide physical layer signal processing functionality according to ORAN specification and 3GPP .

Bronze Feature Scope: enhance O-RAN FH interface lib, develop FAPI API, deliver O-DU Low full functionality binary 
PTL: @Zhimin Yuan
Jira: 3 Epics, 4 Stories, Tasks, and Issues:

Epics

Planning

Jira Epic Linkstatus

Develop L1/L2 FAPI Interface API

1.Develop the L1/L2 FAPI API files

2.Develop the interface parse software for O-DU low software


ODULOW-2 - Getting issue details... STATUS

Done

Develop O-DU Low binary

1.Upstream the O-DU low binary file with typical test cases

2.Provide loader for OSC to download  and test


ODULOW-6 - Getting issue details... STATUS


Done

Enhance O-RAN Front Haul Library

1.Develop new features, include support category B, Support block floating point compression and decompression

2.Develop the CI/CD infrastructure according to O-RAN requirement


ODULOW-7 - Getting issue details... STATUS

Done

O-DU interface with accelerator

Depend on the specification definition(TBD)

track in DPDK

Limitations/Dependencies:

  • L1 binary license agreement – affact the L1 binary release
  • ICC usage agreement – it'll affact FAPI lib, O-RAN FH lib compilation and execution. it'll affact L1 binary execution

Status update:


Simulators (SIM)

Primary Goals: Providing software simulators which are needed by the other projects.
Bronze Feature Scope: Support both the Health Check and the Traffic Steering use cases.

PTL: Alex Stancu

Jira: Count of Epics, User Stories, Tasks, and Issues:  Getting issues...

Blockers: need resources for E2 Simulator enhancements for supporting Traffic Steering use case

Infrastructure (INF)

Primary Goals: Provide an open source refence implementation of O-Cloud complying with WG6 specifications. Use it as the edge cloud to be able to run vO-DU and vO-CU services on it. 

Bronze Feature Scope:  Based on release Amber, support the ARM based system. Align with requirement of the O-Cloud, add more services such as fault management , configuraiton management , software management , host management and service management. Improve the automation by adopting the ansible, and integrate with INT project.


Bronze Releae Highlights:

  • Implement the container based O-Cloud reference design, and with real time features which is critical for the performance sensitive application such as DU.
  • Integrate the telco grade features include fault management, software management, service management, host management and configuration management which leverage from StarlingX.
  • Support the ARM based real time Kubernetes cluster.

PTL: Xiaohua Zhang

Jira: Count of Epics, User Stories, Tasks, and Issues:

Getting issues...    


Integration and Test (INT)

Primary Goals:  CICD, integration and deployment of O-RAN SC developed software, software testing.
Bronze Feature Scope:  1. CICD to support software static analysis and quality reporting, and integrated testing for Near RT RIC; 2. "One-click" deployment of Non RT RIC, OAM, and Near RT RIC, and simulators for supporting the Bronze use cases; 3. Deployment and integration of other components; 4. Integrated testing and use case flow testing.

PTL:  user-d3360

Jira: Count of Epics, User Stories, Tasks, and Issues: Getting issues...

Documentation (DOC)

Primary Goals: Bronze release documentation for OSC and developers
Bronze Feature Scope: 

Improve current documentation skeleton and content, make documentation more understandable for readers.

Focusing on integration documentation, the new feature of Bronze release.

PTL: weichen ni

Jira: Count of Epics, User Stories, Tasks, and Issues:


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