Patent ID: 11917498
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A communications system, comprising:
a first core network device is configured to generate a first indication information and send the first indication information to a multicast user plane gateway, wherein the first indication information indicates to switch from sending of a target data to a terminal in a multicast mode to sending the target data to the terminal in a unicast mode, and the first core network device is a multimedia broadcast/multicast service session management unit;
the multicast user plane gateway is configured to receive the first indication information, and send (i) the target data to a unicast user plane gateway corresponding to the terminal based on the first indication information, and (ii) the target data in a multicast mode on a source multicast transmission path to a terminal group including the terminal, wherein the target data is sent to the terminal via the unicast user plane gateway, and operations to send further comprise one or more operation to: replicate, by the multicast user plane gateway, the target data to obtain two pieces of data,
send, by the multicast user plane gateway to the terminal group, a first piece of data from the two pieces of data in the multicast mode on the source multicast transmission path, and
send, by the multicast user plane gateway to the terminal, a second piece of data from the two pieces of data on a target unicast transmission path corresponding to the terminal; and
wherein the multicast user plane gateway is further configured to receive, from the first core network device, information about the unicast user plane gateway, wherein the information about the unicast user plane gateway comprises a tunnel identifier of the unicast user plane gateway.