NRF Registration With S-NSSAI and DNN for Leaner NF Discovery

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Solution Overview

Problem

Existing network function registration and discovery processes in a service-based architecture of a new radio (NR) system are inefficient, particularly when multiple consumer network functions interact with target network functions, leading to increased signaling and payload.

Innovation Solution

Incorporating Single-Network Slice Selection Assistance Information (S-NSSAI), Data Network Name (DNN), and data processing methods into the registration and discovery processes, enabling the Network Repository Function (NRF) to provide richer information to consumer network functions, reducing signaling and payload.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If the NRF provides detailed information about target NFs to consumer NFs through multiple discovery requests, then the consumer NFs can make informed service selection decisions, but the signaling overhead and payload increase significantly

Engineering Contradiction:

Improveinformation completeness for service selectionVSAvoidsignaling overhead and payload

Core Design Contradiction:

Loss of informationVSQuantity of substance

Solution Approach 1:

The patent applies preliminary action by having the register NF proactively send its capability information (including S-NSSAI, DNN, and data processing methods) to the NRF during the registration phase. This allows the NRF to pre-process and store the information in an organized manner, so that when consumer NFs need to discover services, the NRF can quickly retrieve and provide only the relevant information without requiring multiple detailed discovery requests, thus reducing signaling overhead while maintaining information completeness.

Inventive Principle:

Principle #10Preliminary action

2Adaptability or versatility

If multiple consumer NFs interact with target NFs using traditional discovery processes, then service flexibility is maintained, but the signaling overhead increases with each additional consumer NF

Engineering Contradiction:

Improveservice flexibility for multiple consumer NFsVSAvoidsignaling overhead

Core Design Contradiction:

Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The patent applies merging by consolidating the capability information of the target NF (including S-NSSAI, DNN, and data processing methods) into a single registration record at the NRF. Instead of each consumer NF needing to request information separately for every target NF, the information is merged and stored once during registration. The NRF can then serve multiple consumer NFs using this consolidated information, reducing repetitive signaling while maintaining service flexibility for each consumer NF to discover and interact with appropriate target NFs based on their specific needs.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS12489682B2Network function registration method, discovery method, apparatus, device and medium

Publication Date: 2025.12.02 GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD

AI summary

The present application discloses a network function registration method and discovery method, an apparatus, a device and a medium belonging to the mobile communication field. The method introduces S-NSSAI, a DNN and a data processing method in the network function registration and discovery processes, so that the S-NSSAI, DNN and data processing method can be directly provided to a consumer network function in a network function discovery process for use.