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

Claim 15:
16. A second user plane device, comprising:
at least one processor coupled to a non-transitory computer computer-readable storage medium storing instructions, wherein when the instructions are executed by the at least one processor, the second user plane device is caused to:
receive a first data packet from a first user plane device serving a first user equipment (UE), wherein the first data packet is being sent from the first UE to a second UE, and the first data packet comprises an Internet Protocol (IP) address of the second UE;
when the second UE switches from the second user plane device to a third user plane device, receive a first updated session context record from a control plane device, wherein the IP address of the second UE remains unchanged when the second UE switches from the second user plane device to the third user plane device;
update, according to the first updated session context record, an identifier of a user plane device associated with the IP address of the second UE in a context record on the second user plane device with an identifier of the third user plane device; and
send, according to the context record, the first data packet to the third user plane device, wherein the first data packet is buffered on the second user plane device before it is sent to the third user plane device.