Patent ID: 11968575
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. The method according to claim 9, wherein the method further comprises:
in response to determining that the core network control plane network element of the first network sends the fourth message to the access network device of the first network, receiving, by the core network control plane network element of the first network, a NAS message from the terminal device, wherein the NAS message indicates that the terminal device has moved to the second network and accessed the second network; and
sending, by the core network control plane network element of the first network, a fifth message to the access network device of the first network, wherein the fifth message indicates the access network device of the first network to send buffered user plane data of the first network of the terminal device.