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This repository was archived by the owner on Feb 17, 2026. It is now read-only.
This repository was archived by the owner on Feb 17, 2026. It is now read-only.

Handover with x410 and CU - DU #1471

@robert-200

Description

@robert-200

Hello,
Is it possible to initiate a handover over the E2 interface (by running simple_rc_ho_xapp) in the configuration shown in the document https://docs.srsran.com/projects/project/en/latest/tutorials/source/handover/source/index.html? I created a very similar configuration using x410 (I used CU and DU instead of the gNB monolith) and tried to trigger the handover procedure by running simple_rc_ho_xapp. After a few tries, I managed to do it (I saw in the DU console that rnti and PCI had changed their values, as well as the message "Received RIC_CONTROL_ACK" on the console running simple_rc_ho_xapp). However, after a few days I experimented with the configuration parameters and now I keep getting the error: srsRAN_Project/lib/cu_cp/cu_cp_impl.cpp:739: virtual srsran::async_tasksrsran::srs_cu_cp::cu_cp_intra_cu_handover_response srsran::srs_cu_cp::cu_cp_impl::handle_intra_cu_handover_request(const srsran::srs_cu_cp::cu_cp_intra_cu_handover_request&, srsran::srs_cu_cp::du_index_t&, srsran::srs_cu_cp::du_index_t&):
Assertion `ue != nullptr' failed - ue=invalid: Cannot find DU UE
Aborted
I'm using the srsRAN CU (commit 2be82d8). I'm pretty sure I've rolled back all the changes, but I still can't get the handover to work like I did before. I'm using the appropriate AMF-UE-NGAP-ID and gnb_cu_ue_f1ap_id (by getting them from cu.log).

Regards
Robert

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