5.34.11 Support for Local Offloading Management

When the Local Offloading Management is allowed based on SMF selection subscription data and the UE is within the local offloading management service area, an I-SMF supporting the Local Offloading Management is inserted between the SMF and the AMF, even if the UE is within the SMF service area. The local offloading management service area may be locally configured in AMF per S-NSSAI and DNN, or generated in the AMF based on the received I-SMF profile received from the NRF.

NOTE: The I-SMF profile includes the local offloading management service area supported for the I-SMF.

When an I-SMF is inserted to support Local Offloading Management to manage edge computing information locally, EAS deployment information management, EASDF selection, configuration and DNS message handling are performed by I-SMF as described in TS 23.548 [130].

The Local Offloading Management Policy indicates IP range(s) and/or FQDN(s) allowed to be routed to the local part of a DN as specified in clause 6.4 of TS 23.503 [45].

The detailed procedures on I-SMF insertion during and after PDU session establishment and on EAS discovery are described in clause 6.10 of TS 23.548 [130]. The UL CL and UPF(s) may be inserted, changed, or removed by the I-SMF for the traffic offloaded for Local Offloading Management. For more detail handling (e.g. the interaction between I-SMF and SMF), refer to clause 6.10 of TS 23.548 [130].