Method, device, and system for selecting user plane functional entity supporting non-3GPP access

A control plane CP functional entity, comprising:

• at least one processor;
• and a memory coupled to the at least one processor, wherein the at least one processor is configured to:
• obtain subscription data of a user equipment (UE) when the UE performs access via a 3rd Generation Partnership Project (3GPP) network, wherein the subscription data comprises indication information that indicates whether the UE is allowed to connect to a non-3GPP network;
• and
• if the indication information indicates that the UE is allowed to connect to the non-3GPP network, select a target user plane UP functional entity supporting the non-3GPP access, wherein the at least one processor is configured to obtain a non-3GPP access capability of at least one UP functional entity;
• and select from the at least one UP functional entity based on the non-3GPP access capability of the at least one UP functional entity, the target UP functional entity supporting the non-3GPP access, wherein the at least one processor is configured to obtain, through a domain name system DNS query, the non-3GPP access capability of the at least one UP functional entity, or obtain a configured non-3GPP access capability of the at least one UP functional entity, where the at least one processor is configured to when each of the at least one UP functional entity establishes a connection to the CP functional entity, receive a connection establishment request message sent by the UP functional entity, where in the connection, establishment request message carries the non-3GPP access capability of the UP functional entity.

A non-transitory computer readable storage medium storing computer instructions that when executed by one or more processors, cause the one or more processors to perform operations comprising:

• obtaining subscription data of a user equipment (UE) when the UE performs access via a 3rd Generation Partnership Project (3GPP) network, wherein the subscription data comprises indication information that indicates whether the UE is allowed to connect to a non-3GPP network;
• and
• if the indication information indicates that the UE is allowed to connect to the non-3GPP network, selecting a target user plane UP functional entity supporting the non-3GPP access, wherein the selecting the target UP functional entity supporting non-3GPP access comprises obtaining, by the CP functional entity, a non-3GPP access capability of at least one UP functional entity, and selecting, by the CP functional entity from the at least one UP functional entity based on the non-3GPP access capability of the at least one UP functional entity, the target UP functional entity supporting the non-3GPP access, wherein the obtaining the non-3GPP access capability of at least one UP functional entity comprises obtaining, by the CP functional entity through a domain name system DNS query, the non-3GPP access capability of the at least one UP functional entity;
• or obtaining, by the CP functional entity, a configured non-3GPP access capability of the at least one UP functional entity, wherein when each of the at least one UP functional entity establishes a connection to the CP functional entity, the CP functional entity receives a connection establishment request message sent by the UP functional entity, wherein the connection establishment request message carries the non-3GPP access capability of the UP functional entity.