Dual SIM Terminal Paging Response Delay for Dual Pass

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Solution Overview

Problem

Current dual card dual standby mobile phones cannot implement dual card dual standby dual pass due to limited radio frequency resources, leading to inability to receive incoming calls on one SIM card when the other is in a voice call, affecting user experience.

Innovation Solution

A communication method that delays responding to paging requests for the second SIM card if the first SIM card has a voice packet to transmit, ensuring the second SIM card can receive incoming calls without affecting the voice call quality of the first SIM card by prioritizing radio frequency resource usage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If only one set of transmit and receive radio frequencies is configured in the mobile phone, then the device complexity and cost are reduced, but the mobile phone cannot implement dual card dual standby dual pass and the two cards cannot perform communication at the same time

Engineering Contradiction:

Improveradio frequency resource configurationVSAvoiddual card dual standby dual pass capability

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The patent segments the radio frequency resources by separating transmit and receive functions. It configures one transmit radio frequency and two receive radio frequencies, allowing the system to handle multiple SIM cards simultaneously. The transmit radio frequency is shared between SIM cards through time division, while each SIM card has its own dedicated receive radio frequency, enabling independent receive operations without interfering with each other.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces a dimensional change by separating the transmit and receive radio frequency channels. Instead of using a single shared radio frequency for both transmit and receive operations, the system creates distinct dimensions for transmit and receive operations, allowing simultaneous communication on different dimensions without mutual interference.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Adaptability or versatility

If two sets of transmit and receive radio frequencies are configured in the mobile phone, then dual card dual standby dual pass is implemented, but the device complexity increases and the layout area occupied by radio frequency circuit increases

Engineering Contradiction:

Improvedual card dual standby dual pass capabilityVSAvoidradio frequency resource configuration

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent merges the transmit radio frequency resource into a shared resource that can be dynamically allocated to different SIM cards. Instead of having separate dedicated transmit radio frequencies for each SIM card, the system combines transmit operations into a single shared channel that time-divides access between SIM cards, reducing overall hardware complexity while maintaining dual pass capability.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The transmit radio frequency is designed with universal functionality, serving both SIM cards through time division. This single transmit radio frequency performs the function that would traditionally require two separate transmit radio frequencies, demonstrating multi-functionality that reduces device complexity while enabling dual card dual standby dual pass.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Area of stationary object

If one radio frequency transmit channel and two radio frequency receive channels are configured in the mobile phone, then the layout area occupied by radio frequency circuit is reduced, but the mobile phone cannot implement dual card dual standby dual pass because the other SIM card cannot answer a call when one SIM card transmits voice data

Engineering Contradiction:

Improvelayout area occupied by radio frequency circuitVSAvoiddual card dual standby dual pass capability

Core Design Contradiction:

Area of stationary objectVSAdaptability or versatility

Solution Approach 1:

The patent introduces dynamic resource allocation where the single transmit radio frequency channel can be dynamically assigned to different SIM cards based on operational needs. The system dynamically switches which SIM card uses the transmit channel, allowing the other SIM card to use it for receiving paging messages when the first SIM card is transmitting voice data, thus enabling dual pass capability without requiring two dedicated transmit channels.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS11432262B2Communication method for implementing dual card, dual standby and dual pass connections in a terminal

Publication Date: 2022.08.30 HUAWEI TECH CO LTD

AI summary

A terminal supporting dual-receive single-transmit dual-card dual-standby single-pass includes a first subscriber identity module (SIM) card interface and a second SIM card interface. The first SIM card interface is configured to communicate with a first SIM card, and the second SIM card interface is configured to communicate with a second SIM card. When the terminal is in a first communications connection, the terminal receives a paging request for setting up a second communications connection. When the terminal receives the paging request for the second communications connection, if the terminal has a to-be-sent voice packet of the first communications connection, the terminal delays responding to the paging request for setting up the second communications connection, or if the terminal has no to-be-sent voice packet of the first communications connection, the terminal responds to the paging request for setting up the second communications connection.