CPC H04W 12/037 (2021.01) [H04W 12/041 (2021.01); H04W 12/0431 (2021.01); H04W 36/0038 (2013.01); H04W 36/08 (2013.01); H04W 76/12 (2018.02); H04W 80/06 (2013.01); H04W 80/085 (2013.01)] | 9 Claims |
1. A non-transitory computer readable medium comprising instructions stored thereon, wherein the instructions are effective to cause a computing device to perform operations, comprising:
perform a handover from a source gNB to a target gNB in a network wherein the source gNB has a first control plane connection to at least one SMF via a N3-C interface and a second control plane connection to an AMF via an N2 interface of the AMF, comprising:
determine to handover to a target gNB by the source gNB;
send a handover request to the target gNB by the source gNB;
send information, to the target gNB by the source gNB, regarding the at least one SMF and at least one UPF to which the source gNB is communicating to support a PDU session on behalf of a UE to the target gNB;
send a handover command to the UE to detach from the source gNB and to attach to the target gNB;
in response to detachment of the UE from the source gNB and attachment to the target gNB:
move a second control plane connection over the N2 interface between the AMF and the source gNB to be between the target gNB and the AMF; and
move the control plane connection over the N3-C interface between the at least one SMF and the source gNB to be between the target gNB and the at least one SMF;
wherein the target gNB communicates with the at least one SMF through the first control plane, and the target gNB communicates with the AMF through the second control plane.
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