5.8.2.21 Operator configurable UPF capabilities

UPF may support operator defined non-standardized feature(s) (such as hardware features (e.g. xPUs information (e.g. CPU/GPU information)), computing features (e.g. computing resource type, computing capability) and protection features (e.g. Firewall, DDoS protection)) or partially supported standardized feature(s). If the UPF supports such features, the UPF indicates the supported features to the SMF using the operator configurable UPF capabilities to the SMF via N4 association setup procedure or N4 association update procedure as described in clause 4.4.3 of TS 23.502 [3], or to the NRF via NF service registration procedure or NF service update procedure as described in clause 4.17 of TS 23.502 [3]. SMF may consider the operator configurable UPF capabilities for UPF selection as described in clause 6.3.3.

NOTE 1: The operator configurable UPF capabilities can be used for example for partially supported standardized feature(s), e.g. to identify the supported certain option(s) of a standard feature.

NOTE 2: Operator configurable UPF capabilities present in required or preferred UPF functionalities in SM subscription data (see clause 5.2.3.3.1 of TS 23.502 [3]) are applicable only for non-roaming PDU Sessions and home-routed PDU Sessions.