Release-Notes

This document provides the release notes for D Release of O-DU-L2.

Version history

Date

Ver.

Author

Comment

2021-09-06

4.0.0

Radisys, HCL Technologies Ltd.

D Release

2020-12-04

3.0.0

Radisys, HCL Technologies Ltd.

Cherry Release

2020-06-17

2.0.0

Radisys

Bronze Release

2019-12-29

1.0.0

Radisys

Amber Release

Summary

D

This release contains the following:

  • UL/DL Data transmission on FDD/Mu0/20MHz.

  • Support for static TDD at O-DU High on 100 MHz Bandwidth, numerology 1.

  • Support for Closed Loop automation use case at O-DU High.

  • O-DU low – O-DU high pairwise testing in Radio mode (Broadcast message successfully received at O-DU Low).

  • O1 Module

    Re-structure O1 module to run as a thread in ODU-High.

    CM Support - IP and Port configuration for DU, CU stub and RIC stub via Netconf interface.

    VES PNF Registration.

    Support for Closed Loop Automation use-case.

  • Maintenance release includes :

    Memory handling optimization and fixes.

    Improvement in logging.

    K0, K1 and K2 configuration.

    Fixes in proccessing of RACH Indication and RAR.

Cherry

This release contains the following:

  • Implementation of UE attach signalling procedure on single carrier. All message exchanges within O-DU High are in line with WG8 AAD spec.

  • Enhancements to F1-C interface as required for UE attach procedure.

  • Enhancements to FAPI interface towards O-DU Low as required for UE attach procedure.

  • Support for all short PRACH formats.

  • Integration of FAPI P5 messages with Intel’s O-DU Low in Timer mode.

  • Code support for alignment with latest FAPI interface files from Intel.

  • Implementation of O1 interface.

  • Partial implementation of Health Check use-case with get-Alarm list API.

Bronze

This release contains the following:

  • Enhancements to F1-C interface for UE attach procedure.

  • Implementation of F1-U interface.

  • Implementation of E2 interface.

  • Support for traffic steering usecase.

  • Support for single carrier.

  • Implementation of basic scheduler.

  • Implementation of Cell broadcast procedure.

  • Implementation of UE procedure till msg-4 for single UE. Complete testing of these messages is in progress.

  • Implementation of FAPI interface towards O-DU Low using WLS.

  • Partial implementation of RLC layer interfaces towards upper and lower layers conforming to AAD spec.

Amber

This release contains the following:

  • O-DU layer intilaizations

  • Implementation of F1-C interface

  • Exchange of F1 Setup Request, F1 Setup Response, GNB DU Config Update and GNB DU Config Update ACK between the ODU and CU STUB.

Release Data

D

Project

ODUHIGH

Repo/commit-ID

o-du/l2/ e8fdaea4192b41240b8c43f48adf92eed0c3 b99e

Release designation

D Release

Release date

2021-09-06

Purpose of the delivery

D Release

Cherry

Project

ODUHIGH

Repo/commit-ID

o-du/l2/ fc0bcf28e944ae7ba2423ad3c9a5c794df2dc 4ff

Release designation

Cherry Release

Release date

2020-12-04

Purpose of the delivery

Cherry Release

Bronze

Project

ODUHIGH

Repo/commit-ID

o-du/l2/ 27844f9c01c08472b86b1a75adaed0e450a88 907

Release designation

Bronze Release

Release date

2020-06-17

Purpose of the delivery

Bronze Release

Amber

Project

ODUHIGH

Repo/commit-ID

o-du/l2/ d349ae65e1495488772f87e5cfa1ae71d9eab 075

Release designation

Amber Release

Release date

2019-12-29

Purpose of the delivery

Amber Release

Feature Additions

JIRA BACK-LOG:

D

JIRA REFERENCE

SLOGAN

https://jira.o-ran-sc.org/browse/ODUHIGH-264

Support for Mu1

https://jira.o-ran-sc.org/browse/ODUHIGH-265

Support for 100 MHz

https://jira.o-ran-sc.org/browse/ODUHIGH-266

Support for TDD mode

https://jira.o-ran-sc.org/browse/ODUHIGH-267

Integration with O-DU Low in Radio mode

https://jira.o-ran-sc.org/browse/ODUHIGH-268

Integration with O-CU

https://jira.o-ran-sc.org/browse/ODUHIGH-269

Support for E2E testing

https://jira.o-ran-sc.org/browse/ODUHIGH-299

Closed Loop Automation use-case

https://jira.o-ran-sc.org/browse/ODUHIGH-196

Netconf session for O1 interface for CM

https://jira.o-ran-sc.org/browse/ODUHIGH-340

Resource allocation in time domain changes to meet flexible k0, k1 and k2 values

Cherry

JIRA REFERENCE

SLOGAN

https://jira.o-ran-sc.org/browse/ODUHIGH-10

UE attach procedure with basic scheduling

https://jira.o-ran-sc.org/browse/ODUHIGH-188

Support for all short PRACH formats

https://jira.o-ran-sc.org/browse/ODUHIGH-191

Explore O1 interface

https://jira.o-ran-sc.org/browse/ODUHIGH-189

Integration with O-DU Low

https://jira.o-ran-sc.org/browse/ODUHIGH-184

UE UL Data path

https://jira.o-ran-sc.org/browse/ODUHIGH-185

UE DL Data path

https://jira.o-ran-sc.org/browse/ODUHIGH-186

Applying 64 QAM Modulation in DL

https://jira.o-ran-sc.org/browse/ODUHIGH-187

Applying 16 QAM Modulation in UL

https://jira.o-ran-sc.org/browse/ODUHIGH-190

Integration with VIAVI Software

https://jira.o-ran-sc.org/browse/ODUHIGH-214

get-AlarmList implementation on O1 interface

https://jira.o-ran-sc.org/browse/ODUHIGH-196

CM Support on O1 interface

Bug Corrections

JIRA TICKETS:

NA

Deliverables

Software Deliverables

This release contains O-DU High code, along with test code in the form of CU stub, RIC stub and phy stub. Instructions to build and execute ODU, CU and RIC stub binaries are also present. All of the above can be found in the o-du/l2 repo.

Documentation Deliverables

This release contains

  • README with instruction to build and execute binaries.

  • overview.rst

  • release-notes.rst

  • installation-guide.rst

  • user-guide.rst

  • api-docs.rst

  • developer-guide.rst

Known Limitations, Issues and Workarounds

System Limitations

  • Current code contains support only for below configuration:

    [TDD] [Mu1] [100MHz]

    [FDD] [Mu0] [ 20MHz]

    Freuency Range = FR 1

    DL/UL Modulation = QPSK

    single UE.

  • This release implements a basic scheduler with fixed scheduling for single UE.

  • Cell broadcast is for SSB and SIB1 only.

  • FAPI files not in-line with SCF FAPI 1.0.5. O-DU High currently compatible with FAPI files provided by Intel.

  • Implementation of F1 reset is limited to intializing UE contexts.

  • E2 interface is limited to Traffic Steering Usecase.

  • Forming of RIC event trigger definition, RIC indication header and RIC indication message is unclear in the E2AP draft spec versions. Therefore, implementation does not contain accurate values. Contents of RIC indication message are mocked and triggered just once.

  • On the F1-U interface, UE, RB and tunnel configurations are static.

  • System runs on preconfigured values due to absence of CM support on O1 interface.

  • O-DU High has not been integrated with O-CU.(Using Radisys commercial CU as a test fixture)

  • Netconf TLS connection is not supported

Known Issues

  • PDSCH DMRS must not be interleaved with PDSCH allocations.

  • PUSCH DMRS must not be interleaved with PUSCH allocations.

  • Frequency domain allocation in DCI is a bit map where:

    As per spec : the most significant bit corresponds to the group of lowest frequency.

    As per L1 : the least significant bit corresponds to the lowest frequency group.

  • Only Resource allocation type 1 (i.e RB allocation using Start RB and Number of RBs) is supported for PDSCH.

  • Only mapping type = 1 (i.e. Type A) supported for PDSCH.

  • L1 unable to process SIB1 with hardware accelerator enabled.

JIRA TICKETS:

NA

Workarounds

O-DU High uses FAPI interface files provided by Intel and therefore, not completely in-line with SCF FAPI 1.0.5.

References

  1. ORAN-WG8.AAD.0-v02.05.00

  2. ORAN WG3.E2AP v01.00

  3. ORAN WG3.E2SM v01.00

  4. 3GPP 38.473-f60 v15.3

  5. 3GPP TS 38.211 v15.3

  6. 3GPP TS 38.212 v15.3

  7. 3GPP TS 38.213 v15.3

  8. 3GPP TS 38.214 v15.3

  9. 3GPP TS 38.321 v15.3

  10. 3GPP TS 38.331 v15.3

  11. 5G PHY FAPI Specification v1.0.5