Patent ID: 11864075
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 1:
2. The method according to claim 1, further comprising:
when the second UE switches to the third user plane device that serves the second UE after the switch,
receiving, by the second user plane device, a second updated session context record from the control plane device;
updating, by the second user plane device, the identifier of the second user plane device associated with the IP address of the second UE in a second context record with an identifier of the third user plane device according to the second updated session context record; and
sending, by the second user plane device to the third user plane device according to the identifier of the third user plane device in the second context record, the first data packet, wherein the first data packet is buffered on the second user plane device before being sent to the third user plane device.