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Redes Comunicaciones Móviles rcm.etsist at gmail.comHello! I am testing the handover functionality on S1 with 2 eNB of the OpenAirInterface implementation, both transmitting on the same frequency and with the same TAC. The way I do it is ass follows: - I start the EPC. - I start one of the eNBs. - I connect the UE to the network. - I start the second eNB. - I move the UE away from the first eNB as I move it closer to the second eNB. By following these steps, instead of the handover taking place, what happens is that the second eNB stops, showing an error, and the UE remains connected to the first eNB. Here is the error of the second eNB: [image: image] <https://user-images.githubusercontent.com/50883711/58153355-165e3e80-7c6f-11e9-9718-b2176e2ed6d6.png> And in the interface S1 there is no message related to the handover. I wonder if I am doing something wrong or if this functionality is not available with the OpenAirInterface eNBs or something like that. I attach my configuration files and the log of the mme. I am not sure if the reason for this failure is the NextEPC core or the eNBs, because I have tried the same EPC configuration with srsENBs and the messages in the S1 interface are the same. Kind regards, Salvador. <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> Libre de virus. www.avast.com <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.osmocom.org/pipermail/nextepc/attachments/20190524/412cdb6a/attachment.htm> -------------- next part -------------- A non-text attachment was scrubbed... Name: S1HandoverAttempt.zip Type: application/x-zip-compressed Size: 189658 bytes Desc: not available URL: <http://lists.osmocom.org/pipermail/nextepc/attachments/20190524/412cdb6a/attachment.bin> -------------- next part -------------- A non-text attachment was scrubbed... Name: confFiles.zip Type: application/x-zip-compressed Size: 2150 bytes Desc: not available URL: <http://lists.osmocom.org/pipermail/nextepc/attachments/20190524/412cdb6a/attachment-0001.bin>