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O-DU High

Primary Goals: 

  • O-DU high integration in Radio mode
  • Initial access and Attach procedure testing in Radio mode
  • DL and UL data path in FDD, 20 MHZ with 256 QAM and 64 QAM respectively
  • Static TDD mode support with Numerology =1
  • O1 enhancement
  • Closed Loop Automation Use case support

D Feature Scope: 

. 1. Achieve UL and DL data flow using FDD mode on 20 MHz Bandwidth, Numerology = 0

 2.Support for static TDD mode with pattern “DDDDDDDSUU” on 100 MHz Bandwidth, Numerology = 1

  • Evolve scheduler to support UL and DL scheduling of signaling and data messages on single spectrum in TDD mode
  • Expand scheduler to support Frame structure according to numerology = 1
  • Updates to cell broadcast for TDD and numerology = 1

3.Development activity for Closed Loop Automation use-case

  • Support for cell stop and restart within O-DU High layers
  • Support for cell stop and restart towards O-DU Low
  • F1AP Enhancements towards O-CU indicating cell stop and restart

4.Integration

  • Integration with O-DU Low in Radio mode
  • Integration with CU

5.End to end testing support (O-RU<->O-DU-LOW<->O-DU-HIGH<->RSYS CU<->Viavi 5G Core )

6.O1 enhancements - by HCL

  • CM Support
  • Support for Closed Loop Automation use-case
  • Support for Health Check use-case

Updated:  7th 28th April 2021

JIRA: Epics Status below:

  • https://jira.o-ran-sc.org/browse/ODUHIGH-184 - Done
    • As an O-DU L2 developer, I want to implement single UE DL data path and bench-marking
  • https://jira.o-ran-sc.org/browse/ODUHIGH-185 - Done
    • As an O-DU L2 developer, I want to implement single UE UL data path and bench-marking
  • https://jira.o-ran-sc.org/browse/ODUHIGH-186 - WIP
    • As an O-DU L2 developer, I want to add support for 64QAM modulation scheme in DL
      • Basic code changes complete. Testing in progress for data path
  • https://jira.o-ran-sc.org/browse/ODUHIGH-187 - WIP
    • As an O-DU L2 developer, I want to add support for 16QAM modulation scheme in UL
      • Basic code changes complete. Testing to be done for data path
  • https://jira.o-ran-sc.org/browse/ODUHIGH-264 - WIP
    • As an O-DU L2 developer, I want to add support for Mu1
      • Code changes at DU APP completed.
      • Code changes and testing completed for SSB.
      • Resource allocation for SSB and SIB1 completed.
      • RACH allocation Brainstorming for SIB1 in progress
  • https://jira.o-ran-sc.org/browse/ODUHIGH-265 - WIP
    • As an O-DU L2 developer, I want to add support for 100 MHz Bandwidth
      • Code changes at DU APP completed.Code changes and testing completed for SSB
      • Resource allocation for SSB and SIB1 completed.
      • Resource RACH allocation design for SIB1 in progress
  • https://jira.o-ran-sc.org/browse/ODUHIGH-266 - WIP
    • As an O-DU L2 developer, I want to add support for TDD mode
      • Code changes at DU APP completed.Code changes and testing completed for SSB
      • Resource allocation for SSB and SIB1 completed.
      • Resource RACH allocation design for SIB1 in progress
  • https://jira.o-ran-sc.org/browse/ODUHIGH-299 - WIP
    • As an O-DU L2 developer, I want to develop O-DU High Layers to support Closed Loop Automation Use-case
      • Discussions on the O-DU PNF Registration and Activation process is ongoing
      • Yang modules to be supported by O-DU to ensure the end-to-end functionality of the use case "Closed loop" is in progress. Basic configuration is agreed to support CLA use case.
      • Internal call flow/message sequence between O-CU and O-DU for cell activation and deactivation is clarified.
      • UE delete functionality under reviewcomplete
      • Cell delete functionality coding in progressunder review
      • Code changes for CU Interaction under review
  • https://jira.o-ran-sc.org/browse/ODUHIGH-267 - WIP
    • As an O-DU L2 developer, I want to integrate O-DU High with O-DU Low in Radio Mode
      • SSB transmission successful
      • Debugging issue with Sib1 transmission w,r.t error observed at O-DU Low
  • https://jira.o-ran-sc.org/browse/ODUHIGH-268 - WIP
    • As an O-DU L2 developer, I want to integrate O-DU High with O-CU
      • Using Radisys commercial CU as a test fixture
      • Awaiting server allocation
  • https://jira.o-ran-sc.org/browse/ODUHIGH-269 - TODO
    • As an O-DU L2 developer, I want to support End to End testing scenarios

Dependency/Blockers:

  • O1 configuration for day-1 shall need to be completed to start with CLA. However basic configuration e.g. cell state/operational state/admin state shall be supported initially. Use admin state as unlocked to validate the RU link failure.
  • Server allocation to mount Radisys CU as a test fixture. Bare metal server preferred. 
  • Unable to use valgrind with Intel libraries. Debugging issue with seg fault using Brute Force methodmust be carried out with Alternate methods.


O-DU Low

Primary Goals:  

—Continue O-DU low and O-DU high pairwise test.

—FAPI P7 massage integration -> Ongoing

—Continue O-DU Low and O-RU emulator test.

—Further CU plane testing -> Ongoing

—Continue E2E test with UE simulator.

—Support the UE attachment test

—Development activity for Closed Loop Automation use-case

—Support and test for cell stop and restart within O-DU High layers


D Release Feature Scope: 

PTL: @Zhimin Yuan
  • Status


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