Dual-SIM User Equipment Gap Control for Downlink Collision Avoidance

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Solution Overview

Problem

User equipment equipped with multiple SIMs experiences downlink transmission collisions from different mobile networks, particularly when operated by different communication operators, leading to reception failures.

Innovation Solution

The user equipment receives configuration information from one mobile network to determine non-execution or execution timings, and transmits this information to the other network to align downlink transmissions, avoiding collisions by configuring measurement gaps, paging reception occasions, or downlink communication periods.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the user equipment simultaneously communicates with multiple mobile networks using multiple SIMs, then the versatility and communication capability are improved, but downlink transmission collisions occur leading to reception failures

Engineering Contradiction:

Improvecommunication capabilityVSAvoidsignal reception reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The user equipment proactively transmits gap request information to the second mobile network before downlink transmission collisions occur. This preliminary action allows the network to configure measurement gaps in advance, ensuring that the user equipment can receive downlink signals from both networks without reception failures.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The gap request information acts as an intermediary mechanism between the user equipment and the mobile networks. By introducing this intermediate communication, the system coordinates the downlink transmission timings of multiple networks, resolving the collision problem while maintaining multi-network communication capability.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If the user equipment receives downlink signals from multiple mobile networks simultaneously, then the communication versatility is improved, but transmission collisions cause signal reception failures

Engineering Contradiction:

Improvemulti-network communicationVSAvoidtransmission collision

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The user equipment provides feedback information about its downlink reception status and timing requirements to the mobile networks. This feedback mechanism enables the networks to adjust their transmission timings, avoiding collisions with the user equipment's reception periods and ensuring reliable signal reception.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system dynamically adjusts the downlink transmission timing based on real-time communication needs and collision detection. By making the transmission schedule flexible and adaptive, the system can accommodate multiple networks without fixed collision points, resolving the transmission collision issue.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS20260032641A1Communication control method and user equipment

Publication Date: 2026.01.29 KYOCERA CORP

AI summary

A communication control method using a user equipment configured to communicate with a first mobile network by using a first subscriber identity module (SIM) and to communicate with a second mobile network by using a second SIM. The communication control method comprises receiving, by the user equipment from the first mobile network, information for determining timing of uplink transmission to the first mobile network; transmitting, by the user equipment to the second mobile network, a gap request for the uplink transmission to the first mobile network; and receiving, by the user equipment from the second mobile network, configuration information configuring a gap based on the gap request to the user equipment.