SNPN Credential Access Handling After Authentication Failure

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Solution Overview

Problem

Existing wireless communication systems face challenges in efficiently managing standalone non-public network (SNPN) access when authentication fails, leading to unnecessary signaling and inefficiencies.

Innovation Solution

A method and device for a terminal to recognize authentication failures with SNPNs, setting invalid states in subscriber data lists, and using separate counters to manage credential-based access, thereby reducing unnecessary signaling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the terminal continues to attempt authentication with the same SNPN after failure, then the terminal may eventually succeed in accessing a valid network, but unnecessary signaling is generated and network resources are wasted

Engineering Contradiction:

Improveauthentication success rateVSAvoidsignaling overhead

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The terminal performs preliminary actions by storing SNPN identification information and validity states in the list of subscriber data before authentication attempts. When authentication fails, the terminal marks the SNPN as invalid in advance, preventing future re-attempts to the same failed network, thus avoiding unnecessary signaling overhead while maintaining reliable access to valid networks

Inventive Principle:

Principle #10Preliminary action

2Loss of energy

If the terminal marks an SNPN as invalid after authentication failure, then unnecessary signaling is reduced, but the terminal may fail to access the network if the failure was temporary

Engineering Contradiction:

Improvesignaling overheadVSAvoidnetwork access flexibility

Core Design Contradiction:

Loss of energyVSAdaptability or versatility

Solution Approach 1:

The terminal implements dynamic adaptability by allowing the validity state of SNPNs in the list of subscriber data to be updated. When authentication fails, the terminal marks the SNPN as invalid to reduce signaling, but can later re-evaluate and update the validity state if conditions change, ensuring the system remains flexible and can adapt to temporary network issues while maintaining efficiency

Inventive Principle:

Principle #15Dynamics

3Device complexity

If the terminal manages multiple SNPN credentials without separate counters, then the device complexity is reduced, but authentication state tracking becomes inaccurate

Engineering Contradiction:

Improvecounter management structureVSAvoidauthentication failure tracking

Core Design Contradiction:

Device complexityVSMeasurement precision

Solution Approach 1:

The terminal applies segmentation by introducing separate counters for different authentication scenarios (e.g., counters for credential-based authentication versus list-based authentication). This segmentation allows precise tracking of authentication failures for each SNPN and authentication type, improving measurement precision while maintaining manageable device complexity through structured counter organization

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS12574740B2Terminal operation method and device in wireless communication system

Publication Date: 2026.03.10 LG ELECTRONICS INC

AI summary

Disclosed herein a method for operating a terminal in a wireless communication system, and the method may include performing, by a terminal supporting SNPN access, access to a second SNPN based on a credential of a first SNPN as a credential holder, recognizing failure of the access to the second SNPN, and setting validity of the first SNPN in a list of subscribe data as an invalid state based on the failure of the access.