<div dir="ltr"><p style="box-sizing:border-box;margin-bottom:16px;color:rgb(36,41,46);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol";font-size:14px;margin-top:0px">Hello!</p><p style="box-sizing:border-box;margin-bottom:16px;margin-top:0px;color:rgb(36,41,46);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol";font-size:14px">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.</p><p style="box-sizing:border-box;margin-bottom:16px;margin-top:0px;color:rgb(36,41,46);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol";font-size:14px">The way I do it is ass follows:</p><ul style="box-sizing:border-box;margin-bottom:16px;margin-top:0px;padding-left:2em;color:rgb(36,41,46);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol";font-size:14px"><li style="box-sizing:border-box;margin-left:0px">I start the EPC.</li><li style="box-sizing:border-box;margin-top:0.25em;margin-left:0px">I start one of the eNBs.</li><li style="box-sizing:border-box;margin-top:0.25em;margin-left:0px">I connect the UE to the network.</li><li style="box-sizing:border-box;margin-top:0.25em;margin-left:0px">I start the second eNB.</li><li style="box-sizing:border-box;margin-top:0.25em;margin-left:0px">I move the UE away from the first eNB as I move it closer to the second eNB.</li></ul><p style="box-sizing:border-box;margin-bottom:16px;margin-top:0px;color:rgb(36,41,46);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol";font-size:14px">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:</p><p style="box-sizing:border-box;margin-bottom:16px;margin-top:0px;color:rgb(36,41,46);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol";font-size:14px"><a target="_blank" rel="noopener noreferrer" href="https://user-images.githubusercontent.com/50883711/58153355-165e3e80-7c6f-11e9-9718-b2176e2ed6d6.png" style="box-sizing:border-box;background-color:transparent;color:rgb(3,102,214);text-decoration-line:none"><img src="https://user-images.githubusercontent.com/50883711/58153355-165e3e80-7c6f-11e9-9718-b2176e2ed6d6.png" alt="image" style="box-sizing: content-box; border-style: none; max-width: 100%;"></a></p><p style="box-sizing:border-box;margin-bottom:16px;margin-top:0px;color:rgb(36,41,46);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol";font-size:14px">And in the interface S1 there is no message related to the handover.</p><p style="box-sizing:border-box;margin-bottom:16px;margin-top:0px;color:rgb(36,41,46);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol";font-size:14px">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.</p><p>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.</p><p style="box-sizing:border-box;margin-bottom:16px;margin-top:0px;color:rgb(36,41,46);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol";font-size:14px">Kind regards,</p><p style="box-sizing:border-box;margin-top:0px;color:rgb(36,41,46);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol";font-size:14px;margin-bottom:0px">Salvador.</p></div><div id="DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2"><br> <table style="border-top:1px solid #d3d4de">
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