Section: 5.2.8.2.10 Nsmf_PDUSession_ContextRequest service operation
Content: Service operation name: Nsmf_PDUSession_ContextRequest. Description: This service operation is used by the NF Consumer to request for SM Context (e.g. during EPS IWK, HO, SM Context transfer indication), or during mobility procedure with I-SMF (or V-SMF) changes or may be triggered by OAM. Input, Required: SM Context ID, SM context type. Input, Optional: Target MME Capability, EBI list not to be transferred, PDU Session ID (include PDU Session ID when available), SMF transfer indication, indication of no NG-RAN change. Output, Required: One of the following: - SM Context Container. - Endpoint where SM Context can be retrieved. Output, Optional: Small Data Rate Control Status. The SM context type indicates the type of SM context to be requested, e.g. PDN Connection Context, 5G SM Context or both. The SM context type may also indicate that only a specific part of 5G SM Context is requested, e.g. only the AF Coordination Information part. If the SM context type is PDN Connection Context, the SM Context included in the SM Context container is the PDN Connection Context. If the SM context type is all, the SM Context included in the SM Context container includes both the PDN Connection Context and the 5G SM Context. Table 5.2.8.2.10-1 illustrates the SM Context that may be transferred between I-SMF(s) or between V-SMF(s) in home-routed roaming case. Table 5.2.8.2.10-1: SM Context of a PDU Session transferred between I-SMF(s) or between V-SMF(s) or between I/V-SMF and (H-)SMF