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[E2 agent] Refactor E2SM-KPM and implement support for REPORT style 1

Teodora Vladićrequested to merge
grafana-dist-channel_quality into develop
  • Refactor E2SM-KPM to:
    • better handle different supported REPORT styles needed for "E2 Setup Request"
    • pass "Measurement Label" for calculating the measurement values
  • Implement Subscription for E2SM-KPM REPORT style 1 and fill the PDSCH MCS distribution measurement (CARR.PDSCHMCSDist)
  • Fix the memory leakage caused by the UEs filtering based on NSSAI for REPORT style 4

Tested successfully with and without ASan:

  • in rfsim mode: gNB-mono, CU/DU and CU-CP/CU-UP/DU
  • with the USRP B210: gNB-mono

and xapp_kpm_moni, xapp_rc_moni and xapp_kpm_rc xApps.

TODO:

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