Multi-SIM Connection Management for Multi-Cell Transmission Limits

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Solution Overview

Problem

Multi-SIM or multi-registration terminals experience poor wireless transmission performance due to capability limitations when operating in multiple cells simultaneously.

Innovation Solution

A connection management method where a terminal reports working cell information of multiple SIM cards or registration states to a network side device through a primary identifier, allowing the network side device to optimize data transmission within the terminal's capabilities.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a multi-SIM terminal or multi-registration terminal works in multiple cells at the same time, then the terminal can establish connections in multiple cells simultaneously, but wireless transmission performance deteriorates due to terminal capability limitations

Engineering Contradiction:

Improvemulti-cell connection capabilityVSAvoidwireless transmission performance

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The terminal segments its capability information by working cell, reporting separate capability sets for each cell where it is working. This allows the network to understand and manage the terminal's limited capabilities in each individual cell, rather than treating it as a single unified capability set, thereby resolving the contradiction between multi-cell adaptability and transmission reliability.

Inventive Principle:

Principle #1Segmentation

2Reliability

If the terminal reports working cell information of multiple SIM cards or registration states, then the network side device can optimize data transmission, but signaling overhead increases

Engineering Contradiction:

Improvedata transmission optimizationVSAvoidsignaling overhead

Core Design Contradiction:

ReliabilityVSLoss of information

Solution Approach 1:

The terminal extracts and reports only the necessary working cell information for each SIM card or registration state separately. By taking out only the essential capability information needed for optimization rather than reporting all possible information, the network can optimize data transmission while keeping signaling overhead manageable.

Inventive Principle:

Principle #2Taking out (Extraction)

3Measurement precision

If the terminal reports detailed working cell information for multiple identifiers, then the network side device can accurately determine terminal capabilities, but power consumption increases

Engineering Contradiction:

Improveterminal capability determination accuracyVSAvoidterminal power consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The terminal performs preliminary organization of its working cell information by identifier before reporting. By preparing and structuring the capability information in advance according to different identifiers (SIM cards, registration states), the terminal enables accurate network determination of capabilities while reducing the need for repeated or redundant reporting, thereby lowering power consumption.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentEP3913947B1Connection management method, terminal and network side device

Publication Date: 2026.03.04 VIVO MOBILE COMM CO LTD

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AI summary

Provided are a connection management method, a terminal and a network side device. The terminal comprises N terminal identifiers, N being an integer greater than 1. The connection management method applied to a terminal comprises: reporting working cell information of a second terminal identifier of N terminal identifiers to a network side device by means of a first terminal identifier of the N terminal identifiers.