Network Slice Matching for Seamless Multi-SIM Card Transfer

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Solution Overview

Problem

Conventional terminal devices with a single radio frequency module cannot seamlessly switch between different network slices on multiple SIM cards, especially when the cards belong to different operators, leading to reduced quality of service during card-transfer switching.

Innovation Solution

A card-transfer slice switching method that involves acquiring a switching signal, obtaining a switchable slice based on a slice database, and performing the switch according to the acquired slice, utilizing a processor and memory to manage the switching process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If direct slice switching is performed between cards of different operators, then card-transfer switching is enabled, but slice service compatibility and quality deteriorate due to different available slice services

Engineering Contradiction:
Improvecard-transfer switching capabilityVSAvoidslice connection service quality
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The system performs preliminary actions by acquiring slice information from both the current card and target card before switching occurs. The processor compares slice services, determines compatibility, and pre-selects a target slice that matches the application's network usage status. This preliminary preparation ensures that when card switching occurs, the slice service quality is maintained without interruption or incompatibility issues.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The processor acts as an intermediary between the card switching mechanism and the slice service layer. It mediates the switching process by comparing slice information, determining compatibility between different operator cards, and selecting an appropriate target slice that ensures service continuity. This intermediary function resolves the contradiction by enabling card switching while maintaining slice service quality through intelligent matching.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Adaptability or versatility

If multi-card multi-standby function is implemented, then card switching capability is improved, but slice switching between cards cannot be realized due to single radio frequency constraint

Engineering Contradiction:
Improvemulti-card multi-standby capabilityVSAvoidslice switching functionality
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

Before card switching occurs, the system acquires slice information from both the current card and the target card, and the processor pre-determines a compatible target slice based on the application's network usage status. This preliminary action ensures that even with a single radio frequency, the slice switching functionality is maintained by preparing the appropriate slice configuration in advance, allowing multi-card multi-standby to work seamlessly with slice switching.

Inventive Principle:
Principle #10Preliminary action

3Speed

If card switching is performed without slice matching, then switching speed is improved, but application network usage compatibility deteriorates

Engineering Contradiction:
Improvecard switching speedVSAvoidapplication network usage compatibility
Core Design Contradiction:
SpeedVSAdaptability or versatility

Solution Approach 1:

The system performs slice information acquisition and compatibility comparison in advance, before the actual card switching occurs. The processor determines the target slice based on the application's network usage status and slice compatibility, so that when switching is triggered, the process can execute quickly without compromising compatibility. This preliminary preparation resolves the contradiction by enabling fast switching while ensuring application network usage compatibility is maintained.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS12557008B2Card-transfer slice switching method, device and storage medium
Publication Date: 2026.02.17 ZTE CORP
  • US12557008B2 patent drawing
  • US12557008B2 patent drawing
  • US12557008B2 patent drawing

AI summary

A card-transfer slice switching method, a device and a storage medium are disclosed. The card-transfer slice switching method may include: acquiring a card-transfer slice switching signal (S1000); obtaining a switchable slice according to the card-transfer slice switching signal, an application network usage status of a current card and a preset slice database, the slice database including matching information between the application network usage status and the switchable slice of a target card to be transferred to (S2000); and, performing card-transfer slice switching according to the switchable slice (S3000).