Release-Notes

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

Version history

Date

Ver.

Author

Comment

2023-05-15

8.0.0

Radisys

H release

2022-12-15

7.0.3

Radisys, HCL Technologies Ltd.

G release

2022-06-16

6.0.0

Radisys, HCL Technologies Ltd.

F release

2022-01-14

5.0.0

Radisys, HCL Technologies Ltd.

e-release

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

H- release

This release contains the following:

  • Multi-Scheduling algorithm framework design

  • Alignment to “O-RAN WG8 AAD v07.00” Specification

  • Mobility mode Support (Inter-CU handover)

  • Upgrade to E2AP v3.0 and implementation of E2 messages

    • E2 Setup failure

    • Reset Procedure

  • End-to-end integration support

    • Testing with TM500 UE simulator to detect broadcast message

G- release

This release contains the following:

  • Improvement of code coverage

  • Discontinuous reception (DRX)

  • Alignment of O-DU high with the latest AAD WG8 specification (above 80% complaint)

  • End-to-end integration support

    • WLS memory management update aligned with latest odu-low (FlexRAN 21.11 intel L1)

    • Upgrade to the latest FAPI Interface and vendor-specific messages

    • Successfully tested broadcast message reception at L1

F- release

This release contains the following:

  • HARQ framework support and scheduler enhancement to prioritize retransmission

  • Upgrade to E2AP version 2.0

  • Support for IDLE Mode Paging

  • Mobility mode Support (Intra-CU handover)

  • O1 Module

    • Alarm notification for cell down.

    • Added support for standard defined VES format in alarm notification and PM messages.

e-release

This release contains the following:

  • Support for multiple bearers per UE

  • Support for multiple UEs per cell. Maximum 3 UEs supported in this release.

  • Enhancement of scheduler for round robin scheduling of UEs

  • Enhancement of scheduler to allocate grid resources to UL/DL channels based on slice(RRM Policies), UE and logical channel configurations

  • Support for Network slicing

    • Measures the Slice performance and periodically reports the slice performance statistics to O1.

    • Adjusting/Improving Slice performance via Slice Reconfiguration with optimized resource quota from SMO.

  • O1 Module

    • Support for cell configuration over O1 interface.

    • Support for RRM policy configuration over O1 interface.

    • Support VES PM data stream for sending slice metrics parameters to SMO.

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

H release

Project

ODUHIGH

Repo/commit-ID

o-du/l2/ I790792e199edecd7932fb7dc89c167b231708a5f

Release designation

H release

Release date

2023-06-13

Purpose of the delivery

H release

G release

Project

ODUHIGH

Repo/commit-ID

o-du/l2/ I18c6f314f9a927ae49db92e4f9b0e4a3113f3bdb

Release designation

G release

Release date

2022-12-05

Purpose of the delivery

G release

F release

Project

ODUHIGH

Repo/commit-ID

o-du/l2/ Ice63cef7030a5c08820bcced7ea06467e2c8 820b

Release designation

F release

Release date

2022-06-16

Purpose of the delivery

F release

e-release

Project

ODUHIGH

Repo/commit-ID

o-du/l2/ I4b894c652ef3a3584670a9f26de87c2b2b3b d8f2

Release designation

e-release

Release date

2022-01-14

Purpose of the delivery

e-release

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:

H-release

JIRA REFERENCE

SLOGAN

https://jira.o-ran-sc.org/browse/ODUHIGH-463

Inter-CU Handover

https://jira.o-ran-sc.org/browse/ODUHIGH-488

Alignment to ORAN WG8 AAD v7.0 specification and Enhancement for Multi-scheduling alogrithm framework

https://jira.o-ran-sc.org/browse/ODUHIGH-510

E2 upgrade to v3.0 and enhancement

https://jira.o-ran-sc.org/browse/ODUHIGH-475

Integration of ODU-High with L1

G-release

JIRA REFERENCE

SLOGAN

https://jira.o-ran-sc.org/browse/ODUHIGH-461

Improvement of code coverage

https://jira.o-ran-sc.org/browse/ODUHIGH-462

Implementation of Discontinuous Reception(DRX)

https://jira.o-ran-sc.org/browse/ODUHIGH-464

Alignment to latest ORAN WG8 AAD specification

https://jira.o-ran-sc.org/browse/ODUHIGH-475

Integration of ODU-High with L1

F-release

JIRA REFERENCE

SLOGAN

https://jira.o-ran-sc.org/browse/ODUHIGH-402

Support for HARQ and scheduler enhancement to prioritize retransmission

https://jira.o-ran-sc.org/browse/ODUHIGH-404

Support for E2AP version 2.0

https://jira.o-ran-sc.org/browse/ODUHIGH-405

Support for Inter-DU Handover

https://jira.o-ran-sc.org/browse/ODUHIGH-406

Support for Idle Mode Paging

https://jira.o-ran-sc.org/browse/ODUHIGH-429

O1 Enhancements

e-release

JIRA REFERENCE

SLOGAN

https://jira.o-ran-sc.org/browse/ODUHIGH-351

Support for Multi bearers

https://jira.o-ran-sc.org/browse/ODUHIGH-352

Support for Multi UE

https://jira.o-ran-sc.org/browse/ODUHIGH-363

Network Slicing support

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

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

https://jira.o-ran-sc.org/browse/ODUHIGH-361

Support for cell configuration over O1 interface

https://jira.o-ran-sc.org/browse/ODUHIGH-395

Optimization, scaling and rework

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

Previous Releases

JIRA REFERENCE

SLOGAN

https://jira.o-ran-sc.org/browse/ODUHIGH-1

F1-C enhancement

https://jira.o-ran-sc.org/browse/ODUHIGH-5

F1-U implementation

https://jira.o-ran-sc.org/browse/ODUHIGH-11

E2 implementation

https://jira.o-ran-sc.org/browse/ODUHIGH-9

Cell broadcast procedure

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

UE attach procedure till msg-4

https://jira.o-ran-sc.org/browse/ODUHIGH-8

FAPI interface implementation

https://jira.o-ran-sc.org/browse/ODUHIGH-27

RLC layer interface enhancements

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

  • Current code is locally tested to support upto three UEs.

  • NR-MAC supports Round Robin scheduling currently, however the framework provides support to plug-in any other scheduling algorthim easily.

  • 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.

  • Cell configuration is supported by CM on O1 interface. All other configurations are static.

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

  • Netconf TLS connection is not supported

  • Current code supports two Network Slices, One Default and other one Dedicated Slice.

  • We have to manually download the 3GPP yang models and install.

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-v07.00.00

  2. O-RAN.WG5.C.1-v05.00

  3. ORAN WG3.E2AP v03.00

  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

  12. 3GPP TS 28.541 Specfication V16.6

  13. O-RAN WG1.O1-Interface v04.00

  14. O-RAN WG1.OAM-Architecture v04.00