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Trigger UL Failure if Ack of Msg4 not received and implement RA Contention Resolution timer in gNB

Luis Pereira requested to merge Delete_ra_timer into develop

Trigger UL Failure if Ack of Msg4 not received, the UE will trigger new RA either with MAC CE C-RNTI or with new RRCSetupRequest:

  • MAC CE C-RNTI: The ul_failure_timer will be reset
  • RRCSetupRequest: New UE will be created and the previous one will be deleted

Implement RA Contention Resolution timer in gNB accordingly with 3GPP TS 38.321 Section 5.1.5 Contention Resolution

  • After the Contention Resolution timer has expired the UE will consider the RA has failed, so it will trigger new RA, this way, at gNB we need also to clear any RA with Contention Resolution timer expired.
Edited by Luis Pereira

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