Patent ID: 11895715
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 17:
18. A method implemented by a communications system and comprising:
serving, by a first control plane function network element in the communications system, an established protocol data unit (PDU) session connected to a first data network name (DNN);
receiving, from a terminal and by a mobility management device in the communications system, a request requesting establishment of a first PDU session, wherein the request comprises the first DNN for the first PDU session to connect to;
determining, by the mobility management device and based on the first DNN, to select the first control plane function network element for the first PDU session;
selecting, by the mobility management device, the first control plane function network element for the first PDU session;
sending, by the mobility management device and to the first control plane function network element, the request; and
receiving, by the first control plane function network element and from the mobility management device, the request.