Multi-SIM Paging Signal Selection via Single Antenna Merging

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Solution Overview

Problem

Current multi-SIM mobile phone technologies face issues with high paging signaling overhead and power consumption, as well as signal loss due to the lack of a unified standard for handling multiple SIM cards, leading to inefficient network access and user selection challenges.

Innovation Solution

A network access method that selects one SIM card from multiple SIM cards to connect to a network based on received paging signaling, reducing signal loss and improving flexibility by using a single antenna to receive and respond to paging messages, and configuring priorities for SIM card selection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple SIM cards are handled separately with individual paging reception, then each SIM card can independently access the network, but the paging signaling overhead and power consumption increase significantly

Engineering Contradiction:

Improvenetwork access reliabilityVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent merges the paging reception function for multiple SIM cards into a single antenna and baseband processing unit. The network side sends paging signals for multiple SIM cards through one antenna, and the baseband processor handles paging for all SIM cards centrally, eliminating the need for separate paging reception circuits for each SIM card and reducing power consumption.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent implements a universal paging reception mechanism where a single antenna and baseband processing unit serve multiple SIM cards. The baseband processor can identify and handle paging signals for different SIM cards based on their respective network registrations, making the paging reception system multi-functional and applicable to all SIM cards in the terminal.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If multiple SIM cards are handled separately with individual paging reception, then each SIM card can independently access the network, but the paging signaling overhead increases

Engineering Contradiction:

Improvenetwork access reliabilityVSAvoidpaging signaling overhead

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

Inventive Principle:

Principle #5Merging (Combining)

3Use of energy by moving object

If a unified standard for handling multiple SIM cards is implemented, then paging signaling overhead and power consumption are reduced, but the device complexity increases due to selection logic

Engineering Contradiction:

Improvepower consumptionVSAvoidSIM card selection complexity

Core Design Contradiction:

Use of energy by moving objectVSDevice complexity

Solution Approach 1:

The patent implements a self-service SIM card selection mechanism where the terminal automatically determines which SIM card to use based on pre-configured priorities and current network conditions. The selection logic is embedded in the baseband processor, which automatically selects the appropriate SIM card for network access without requiring user intervention, thereby managing complexity internally while maintaining simplicity for the user.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent uses parameter changes in the form of priority configurations for different SIM cards. The terminal can dynamically adjust the priority of each SIM card based on user settings, network availability, and service requirements. This parameter-based approach allows flexible SIM card selection without complex decision-making logic, as the baseband processor simply follows the configured priority parameters.

Inventive Principle:

Principle #35Parameter changes

4Use of energy by moving object

If one SIM card is selected to receive paging signals for multiple SIM cards, then power consumption is reduced, but signal loss may occur for non-selected SIM cards

Engineering Contradiction:

Improvepower consumptionVSAvoidpaging signal reception reliability

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The patent implements a feedback mechanism where the baseband processor continuously monitors the reception status and signal quality for all SIM cards. Based on this feedback, the system can dynamically adjust the paging reception strategy, such as switching between different SIM cards for paging reception or activating additional reception resources when signal loss is detected, thereby maintaining reliability while managing power consumption.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS12127302B2Network access method and apparatus, and communication device and storage medium

Publication Date: 2024.10.22 BEIJING XIAOMI MOBILE SOFTWARE CO LTD

AI summary

A network access method. The network access method includes: receiving paging signaling by using a first SIM card in a terminal; and in response to determining that the paging signaling comprises identity information of at least two SIM cards in the terminal, selecting one SIM card from the at least two SIM cards to connect to a network.