Network Event Subscriptions for 4G-to-5G Domain Continuity

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Solution Overview

Problem

Existing telecommunications networks face service interruptions and discontinuities when users upgrade to new domains, such as from 4G to 5G, due to inadequate handling of subscriptions and event monitoring across different domains.

Innovation Solution

A method involving nodes in the communications network that send and receive indications to manage subscriptions, allowing seamless monitoring of events across different domains by requesting and reporting new accessibility before and after user provisioning in the new domain.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If users upgrade to new domains (e.g., from 4G to 5G), then service capabilities and network performance are improved, but service interruptions and subscription discontinuities occur

Engineering Contradiction:

Improvedomain compatibilityVSAvoidservice continuity

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The system performs preliminary actions by establishing event subscriptions in the new domain before the user actually accesses it. When a user profiles is updated to include a new domain, the system proactively sets up event monitoring subscriptions in advance, so that when the user connects to the new domain, service continuity is maintained without interruptions.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If event monitoring is maintained across domain upgrades, then service continuity is improved, but additional subscriptions and complexity are required

Engineering Contradiction:

Improveservice continuityVSAvoidsubscription management

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The system introduces an intermediary mechanism through the event subscription manager, which automatically handles the complexity of managing subscriptions across multiple domains. This intermediary component monitors user profiles, detects new domain additions, and automatically establishes appropriate subscriptions, thereby maintaining service continuity without requiring manual intervention or complex user-side changes.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Productivity

If subscriptions are established before user provisioning in new domain, then service readiness is improved, but premature configuration and resource usage occur

Engineering Contradiction:

Improveservice readinessVSAvoidconfiguration timing

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The system employs feedback mechanisms by continuously monitoring user profiles for updates indicating new domain provisioning. Subscriptions are established dynamically based on this feedback - when the profile update is detected, the system then sets up the appropriate event monitoring subscriptions. This ensures subscriptions are created at the optimal moment without premature configuration or resource waste.

Inventive Principle:

Principle #23Feedback

Data Source

PatentEP4144110B1Network nodes and methods performed thereby for handling subscriptions in a communications network

Publication Date: 2025.10.15 TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

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Figure 1B
Figure 2a~2b

AI summary

A method, performed by a first node (111), for handling subscriptions in a communications network (100). The first node (111) operates in the communications network (100). The first node (111) sends (303), to a second node (112), a first indication. The first indication requests subscription to report new accessibility for a device (140) to a second domain different than a first domain currently accessible by the device (140). The first node (111) receives (304) a second indication from the second node (112). The second indication indicates the new accessibility by the device (140) to the second domain. A fifth node (115) receives (501), from the first node (111), a fifth indication indicating a notification of an event by the device (140) after the new accessibility has been enabled. The fifth indication is received based on a previous indication sent by the fifth node (115) prior to the new accessibility has been enabled.