Multi-SIM Subscription Priority Switching for Shared RF Gain Control

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Solution Overview

Problem

Existing technologies fail to effectively manage and optimize the use of multiple SIMs in multi-SIM devices, leading to interference and performance issues.

Innovation Solution

Implement a method for wireless communication in which the first SIM is designated as having a higher priority status than the second SIM, and the processor adjusts the gain settings accordingly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple SIMs are included in a device to meet growing demands for expanded mobile broadband connectivity, then connectivity options are improved, but interference and performance issues occur between subscriptions

Engineering Contradiction:

Improveconnectivity optionsVSAvoidinterference between subscriptions

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent implements dynamic priority management where the system continuously monitors signal conditions and adjusts subscription priorities in real-time. The processor dynamically swaps priority status between first and second subscriptions based on analyzed signal conditions, allowing the system to adapt to changing network environments and minimize interference between concurrent communication sessions

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes the priority parameter of subscriptions based on signal conditions. When the second subscription experiences poor signal conditions, the system swaps the priority parameter to give the second subscription higher priority temporarily, allowing it to access shared RF resources with higher gain settings, then reverts to the original priority configuration when conditions improve

Inventive Principle:

Principle #35Parameter changes

2Productivity

If concurrent communication sessions are established for multiple subscriptions sharing RF resources, then productivity is improved, but signal quality and throughput are degraded

Engineering Contradiction:

Improveconcurrent communication sessionsVSAvoidsignal quality

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The system performs preliminary analysis of signal conditions associated with each subscription before establishing concurrent communication sessions. By pre-identifying subscriptions with poor signal conditions, the system can proactively allocate higher priority and adjust RF resource distribution to ensure adequate signal quality for vulnerable connections before interference occurs

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system continuously monitors and analyzes signal conditions for all active subscriptions and uses this feedback to dynamically adjust priority allocations. When signal quality degrades for any subscription, the feedback mechanism triggers a priority swap to reallocate RF resources, ensuring that signal quality is maintained across all concurrent communication sessions

Inventive Principle:

Principle #23Feedback

3Reliability

If priority status is designated for one subscription over another, then signal quality for the high-priority subscription is improved, but the low-priority subscription experiences throughput impact

Engineering Contradiction:

Improvesignal qualityVSAvoidthroughput

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The system implements periodic swapping of priority status between subscriptions based on analyzed signal conditions. Instead of maintaining a fixed priority hierarchy, the system periodically evaluates signal conditions and swaps priorities to ensure that the subscription experiencing poorer signal conditions receives higher priority resource allocation, thereby balancing signal quality and throughput across both subscriptions over time

Inventive Principle:

Principle #19Periodic action

Data Source

PatentUS12425835B2Systems and methods to designate subscription priority to set a gain state in a multi-subscriber identity module device

Publication Date: 2025.09.23 QUALCOMM INC

AI summary

A method of wireless communication is performed by a user equipment (UE) that has a first subscriber identity module (SIM) and a second SIM. The method of wireless communication includes operating in a mode in which the first SIM is associated with a first subscription and in which the second SIM is associated with a second subscription, the first and second subscriptions being active at a same time and sharing radio frequency (RF) resources of the UE; designating the first subscription as having a higher priority status than the second subscription, analyzing a signal condition associated with the second subscription, and changing the higher priority status to apply to the second subscription based on the signal condition.