User Equipment Registration Update via Dual Network Access

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Solution Overview

Problem

In 5G wireless networks, existing registration update mechanisms are inefficient as they often require unnecessary signaling and resource usage, especially when user equipment (UE) is connected to multiple network access technologies, leading to suboptimal management of registration updates and potential reachability issues.

Innovation Solution

The proposed solution involves a method where user equipment (UE) performs first and second registrations with a registration node via different network accesses and updates the first registration only when disconnected from the first network access, utilizing a connection status check to trigger updates via the second network access, optimizing the update procedure by avoiding unnecessary signaling and resource usage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the user equipment performs registration updates continuously to maintain connection status, then the reachability of the user equipment is maintained, but the signaling overhead and network resource consumption increase

Engineering Contradiction:
ImproveUE reachabilityVSAvoidsignaling overhead
Core Design Contradiction:
ReliabilityVSLoss of energy

Solution Approach 1:

The patent applies dynamics by making the registration update mechanism adaptive rather than static. The UE dynamically determines whether to perform a registration update based on real-time connection status monitoring. When connected via the first network access, the UE monitors for disconnection events and only updates when necessary. This dynamic approach prevents unnecessary periodic updates while maintaining reachability, thereby reducing signaling overhead.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The UE performs self-service by autonomously monitoring its own connection status and determining when updates are needed without continuous network intervention. The UE independently tracks connection states via the first network access and triggers updates only when disconnection is detected, eliminating the need for network-driven periodic checks and reducing overall signaling burden.

Inventive Principle:
Principle #25Self-service

2Loss of energy

If the user equipment monitors connection status continuously to trigger updates only when necessary, then resource consumption is reduced, but the complexity of connection status management increases

Engineering Contradiction:
Improveresource consumptionVSAvoidconnection status management
Core Design Contradiction:
Loss of energyVSDevice complexity

Solution Approach 1:

The patent segments the connection status management into distinct, manageable components. The UE separates the monitoring function (tracking connection status via the first network access) from the update function (triggering registration updates only when needed). This segmentation allows each component to operate independently with clear boundaries, reducing the cognitive load and implementation complexity despite continuous monitoring.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system implements feedback mechanisms where the UE continuously monitors connection status and uses this information to feedback control the registration update process. When the connection status changes (disconnection detected), the feedback triggers an update only if necessary. This feedback loop simplifies management by automating the decision-making process based on real-time conditions, eliminating manual intervention requirements.

Inventive Principle:
Principle #23Feedback

3Reliability

If the registration node updates registrations frequently to ensure reachability, then the reliability of communication is improved, but the processing load on the network increases

Engineering Contradiction:
Improvecommunication reliabilityVSAvoidnetwork processing load
Core Design Contradiction:
ReliabilityVSPower

Solution Approach 1:

The patent replaces continuous periodic registration updates with event-driven updates. Instead of the network periodically checking all UEs for registration updates, the system uses periodic monitoring at the UE level to detect connection status changes. When a disconnection event occurs, an update is triggered only if needed. This transforms the periodic action from network-centric to UE-centric, significantly reducing network processing load while maintaining communication reliability.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The UE performs preliminary action by proactively monitoring its connection status and preparing to trigger updates only when disconnection is detected. This preliminary monitoring at the UE level prevents the need for continuous network-initiated checks. The UE anticipates potential reachability issues and prepares update mechanisms in advance, but only activates them when actual disconnection occurs, thereby reducing network processing burden.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentEP3787352B1Method for user equipment's registration update
Publication Date: 2023.05.31 NOKIA TECHNOLOGIES OY
  • EP3787352B1 patent drawingFigure 1
  • EP3787352B1 patent drawingFigure 2~3
  • EP3787352B1 patent drawingFigure 4~5

AI summary

The present subject matter relates to a method comprising performing, by a user equipment, a first registration at a registration node via a first network access; performing, by the user equipment, a second registration at the registration node via a second network access. In response to determining that the user equipment is not connected to the registration node via the first network access, an update of the first registration with the registration node may be triggered, by the user equipment, dependent upon the user equipment being connected to the registration node via the second network access.