Patent ID: 11917450
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. A communications system comprising:
a master radio access network device, a core network control plane device and a core network user plane device; wherein
the master radio access network device is configured to send a first request message to a core network control plane device, the first request message comprises an identity of a protocol data unit (PDU) session and an identity of a quality of service (QoS) flow, the first request message requests changing a route of the QoS flow of the PDU session to a secondary access network device;
the core network control plane device is configured to send a second request message to a core network user plane device, the second request message notifies the core network user plane device to change a route of the QoS flow of the PDU session, the second request message comprises the identity of the PDU session and the identity of the QoS flow;
the core network user plane device is configured to change the route of the QoS flow; and
the core network user plane device is configured to send a first end marker packet to the master radio access network device; and
the master radio access network device is further configured to send a second end marker packet to the secondary access network device, wherein the second end marker packet instructs the secondary access network device to send, to the core network user plane device, a data packet that is of the QoS flow and that is sent by a terminal to the secondary access network device;
wherein the first end marker packet indicates that the core network user plane device no longer sends a data packet of the QoS flow to the master radio access network device.