Patent ID: 11968576
Assignee: ZTE CORPORATION
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. A data transmission tunnel address coordination method, comprising:
in a handover process of a terminal from a source base station side to a target base station side, receiving a first base station downlink address and a second base station downlink address sent from the target base station side, wherein the first base station downlink address is acquired by the target base station side from a target bearer base station for carrying a protocol data unit (PDU) session of the terminal at the target base station side and the second base station downlink address is allocated by the target base station side, wherein the PDU session is determined to be split by the target base station side;
allocating a first user plane function (UPF) network element uplink address to the target base station side and a second UPF network element uplink address to the target bearer base station to which the first base station downlink address and the second base station downlink address belong; and
before the handover process is completed, forwarding the second UPF network element uplink address to the target base station side.