UE Network Transfer Using Extended SOR Service Priority

Solution Overview

Problem

Existing network transfer methods in UE devices require completion of all ongoing services before transferring to another network, which affects efficiency.

Innovation Solution

A network transfer method that involves receiving extended steering of roaming (SOR) information to determine the priority of ongoing services and perform transfers accordingly, allowing for prioritized network transfers without waiting for all services to complete.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the UE waits for all ongoing services to complete before transferring to another network, then service continuity is ensured, but network transfer efficiency deteriorates

Engineering Contradiction:

Improveservice continuityVSAvoidnetwork transfer efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent segments the service continuity requirement by introducing service priority levels (high priority and low priority). Instead of treating all services uniformly, the system divides them into categories that can be handled differently during network transfer, allowing high-priority services to be maintained while low-priority services can be interrupted or deferred.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies local quality by assigning different quality attributes (priorities) to different services. Each service is tagged with a priority level that determines its treatment during network transfer, allowing the system to apply different rules locally to different services rather than using a global wait-for-all approach.

Inventive Principle:

Principle #3Local quality

2Productivity

If the UE transfers to another network immediately without waiting for ongoing services, then network transfer efficiency is improved, but service continuity deteriorates

Engineering Contradiction:

Improvenetwork transfer efficiencyVSAvoidservice continuity

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent segments the service continuity requirement by introducing service priority levels (high priority and low priority). Instead of treating all services uniformly, the system divides them into categories that can be handled differently during network transfer, allowing high-priority services to be maintained while low-priority services can be interrupted or deferred.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies partial action by not requiring all services to complete before transfer. Instead, it requires only high-priority services to be handled appropriately, allowing the transfer to proceed partially (for low-priority services) while maintaining continuity for critical services.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS12382357B2Network transfer method, apparatus, and device

Publication Date: 2025.08.05 VIVO MOBILE COMM CO LTD

AI summary

This application discloses a network transfer method, an apparatus, and a device, and relates to the communications field. The method includes: receiving first extended steering of roaming SOR information sent by a network side device; in a case that the terminal device supports the a capability of negotiating extended SOR, determining a priority of an ongoing service based on the first extended SOR information; and performing a transfer operation matching the priority of the ongoing service, where the transfer operation is an operation that the terminal device transfers from a currently camping public land mobile network PLMN to a target PLMN.