Network Exposure Node Logic for Group UE Subscription Deletion

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Solution Overview

Problem

Existing event monitoring systems in 3GPP networks face issues with incorrect cancellation of group member UEs during event subscription deletion, leading to mis-operations between the Service Capability Exposure Function (SCEF) and the Service Capability Server (SCS)/Application Server (AS).

Innovation Solution

The proposed solution involves a network exposure node that determines whether a UE is an individual or group member by analyzing the received message, and sends specific UE identification information only when the UE is a group member, ensuring correct cancellation of event subscriptions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the network exposure node deletes event subscription for group member UE without checking individual status, then the deletion process is simplified, but incorrect cancellation occurs leading to mis-operations between SCEF and SCS/AS

Engineering Contradiction:

Improveevent subscription deletion processVSAvoidcancellation accuracy

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent applies local quality by differentiating the treatment of individual UEs versus group member UEs. The network exposure node checks whether a UE is an individual or group member and applies different deletion logic accordingly. For individual UEs, the subscription is deleted immediately; for group members, the node checks if other group members still require the subscription before deletion. This localized differentiation resolves the contradiction by maintaining simplicity for individual cases while ensuring accuracy for group cases.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent implements preliminary action by having the network exposure node first determine the UE type (individual or group member) before executing the deletion operation. This preliminary classification allows the system to prepare the appropriate deletion strategy in advance, preventing incorrect cancellation of group member subscriptions while maintaining efficient processing for individual UEs.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If the network exposure node checks whether UE is individual or group member before deletion, then cancellation accuracy is improved, but the processing complexity increases

Engineering Contradiction:

Improvecancellation accuracyVSAvoiddeletion processing logic

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent resolves the complexity contradiction by applying local quality through conditional logic that only activates when necessary. The network exposure node checks UE type (individual vs. group member) and only performs additional group member verification steps when the UE is identified as a group member. This localized approach maintains high cancellation accuracy for group members while avoiding unnecessary complexity checks for individual UEs, thus balancing reliability and processing complexity.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS20260006418A1Method and apparatus for event monitoring

Publication Date: 2026.01.01 TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

AI summary

A method implemented at a network exposure node is provided. The method includes: receiving, from a first node, a first message for deleting an event subscription for at least one user equipment, UE; determining whether the at least one UE is an individual UE or a group member UE; sending a second message to a second node, when the at least one UE is a group member UE, wherein the second message includes UE identification information of the at least one UE.