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

Claim 14:
15. A communications system comprising:
a first control plane function network element configured to:
serve an established protocol data unit (PDU) session connected to a first data network name (DNN); and
receive a request requesting establishment of a first PDU session, wherein the request comprises the first DNN for the first PDU session to connect to; and

a mobility management device configured to:
receive, from a terminal, the request;
determine, based on the first DNN, to select the first control plane function network element for the first PDU session;
select the first control plane function network element for the first PDU session; and
send, to the first control plane function network element, the request.