5G • Core Network
N10 Interface
N10 Reference Point (SMF to UDM)
Interface between SMF and UDM for retrieving session management subscription data.
Technical Explanation
The N10 reference point is realized via the Nudm service-based interface. The SMF uses N10 to download subscriber session profiles (subscribed DNNs, default 5QIs, maximum bit rates) and register as the active serving SMF for a PDU session.
Key Functions
- Downloads session management subscription profiles to SMF
- Registers active SMF instance in UDM for PDU session tracking
- Realized via Nudm_SDM and Nudm_UECM service operations
Specifications
3GPP TS 23.501, TS 29.503
Interfaces
N10Nudm
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