Multi-SIM Data Transmission via Connected Subscriber Module

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Solution Overview

Problem

Multi-SIM terminal devices lack a unified standard for data transmission, leading to varied terminal behaviors and inefficient data processing, particularly when a non-connected SIM card needs to establish a radio resource control connection, consuming time and power.

Innovation Solution

A data transmission method where a connected SIM module in a multi-SIM terminal transmits data for a non-connected SIM module, eliminating the need for the non-connected SIM to establish a connected state, thereby saving time and power.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a non-connected SIM card establishes a radio resource control connection to transmit data, then data transmission can be achieved, but time and power are consumed

Engineering Contradiction:

Improvedata transmission capabilityVSAvoidconnection establishment time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The connected SIM card's radio resource control connection is made multi-functional by allowing it to handle data transmission for both its own applications and applications on the non-connected SIM card, eliminating the need for separate connection establishment

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The terminal device acts as an intermediary that receives data intended for the non-connected SIM card through the connected SIM card's existing connection, forwarding the data without requiring the non-connected SIM card to establish its own connection

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If a non-connected SIM card establishes a radio resource control connection to transmit data, then data transmission can be achieved, but power is consumed

Engineering Contradiction:

Improvedata transmission capabilityVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The connected SIM card's connection is established in advance and maintained, so that when data transmission is needed for the non-connected SIM card, the connection already exists and can be immediately utilized without additional power consumption for connection establishment

Inventive Principle:

Principle #10Preliminary action

3Adaptability or versatility

If different terminal manufacturers implement varied processing methods for multi-SIM devices, then device flexibility is maintained, but unified data transmission standards are lacking

Engineering Contradiction:

Improveterminal implementation flexibilityVSAvoiddata transmission processing complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The solution provides a universal data transmission mechanism that works across different multi-SIM terminal implementations, establishing a standardized approach where any connected SIM card can serve as the transmission channel for any non-connected SIM card in the terminal

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS12096519B2Data transmission method and apparatus, communication device, and storage medium

Publication Date: 2024.09.17 BEIJING XIAOMI MOBILE SOFTWARE CO LTD

AI summary

A data transmission method including: when a terminal includes at least two subscriber identification modules, transmitting the data of a second subscriber identification module in a non-connected state in the at least two subscriber identification modules based on a first subscriber identification module in a connected state in the at least two subscriber identification modules.