DSDA UE Flexible Resource Sharing for Uplink Transmission Protection

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Solution Overview

Problem

In dual SIM dual active (DSDA) mode, managing resource sharing between multiple subscriptions in wireless communication devices is challenging, leading to increased hardware costs and power consumption due to independent resource allocation, while resource sharing complicates concurrent transmissions.

Innovation Solution

A method for a user equipment (UE) to dynamically switch between different resource-sharing configurations based on switching conditions, such as grant types, priority, and resource availability, allowing flexible management of shared RF resources for multiple SIM subscriptions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If independent resource allocation is used for each SIM subscription, then transmission reliability is improved, but hardware cost and power consumption increase

Engineering Contradiction:
Improvetransmission reliabilityVSAvoidhardware cost
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges transmission and reception resources across multiple SIM subscriptions by implementing a shared resource pool that can be dynamically allocated to different subscriptions based on current communication needs, thereby reducing the total number of independent hardware components required while maintaining transmission reliability through coordinated resource management

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent implements dynamic resource allocation mechanisms that allow transmission and reception resources to be flexibly assigned between different SIM subscriptions based on real-time communication requirements, enabling the system to adapt resource distribution dynamically rather than maintaining fixed independent allocations for each subscription

Inventive Principle:
Principle #15Dynamics

2Device complexity

If resource sharing is implemented between SIM subscriptions, then hardware cost is reduced, but concurrent transmission capability deteriorates

Engineering Contradiction:
Improvehardware costVSAvoidconcurrent transmission capability
Core Design Contradiction:
Device complexityVSProductivity

Solution Approach 1:

The patent segments the shared resource pool into multiple virtual resource groups that can be independently allocated to different SIM subscriptions, allowing concurrent transmissions to be scheduled in time or frequency domains while physically sharing the same hardware resources, thus maintaining concurrent transmission capability despite resource sharing

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent employs dynamic resource scheduling mechanisms that can rapidly switch and allocate shared transmission and reception resources between different SIM subscriptions based on real-time communication demands, enabling concurrent transmissions to be supported through time-division or frequency-division multiplexing of the shared hardware resources

Inventive Principle:
Principle #15Dynamics

3Use of energy by stationary object

If resource sharing is implemented between SIM subscriptions, then power consumption is reduced, but resource utilization efficiency deteriorates

Engineering Contradiction:
Improvepower consumptionVSAvoidresource utilization efficiency
Core Design Contradiction:
Use of energy by stationary objectVSProductivity

Solution Approach 1:

The patent implements feedback mechanisms that continuously monitor the utilization status of shared resources across different SIM subscriptions and dynamically adjust resource allocation to optimize efficiency, ensuring that shared resources are fully utilized according to actual communication needs rather than remaining idle or underutilized

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent employs dynamic resource allocation strategies that adapt the distribution of shared transmission and reception resources between SIM subscriptions based on real-time communication traffic patterns, activating or deactivating resource sharing modes dynamically to balance power consumption savings with resource utilization efficiency

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS20250338257A1A method of dual subscriber identity module (SIM)-dual active (DSDA) user equipment (UE) flexible transmission resource-sharing mode switching and uplink transmission protection
Publication Date: 2025.10.30 QUALCOMM INC
  • US20250338257A1 patent drawing
  • US20250338257A1 patent drawing
  • US20250338257A1 patent drawing

AI summary

Systems, methods, and devices for wireless communication that support mechanisms for flexible switching between different resource-sharing configurations of a multi-subscriber identity module (SIM) communications device. A user equipment (UE) configured for multi-SIM communications including a first subscription and a second subscription operates in a concurrent communication mode. The UE is configured with a plurality of resource-sharing configurations for sharing a set of resources between the first subscription and the second subscription during the concurrent communication mode. The UE determines whether one or more switching conditions are present with respect to the concurrent communication mode, selects a resource-sharing configuration of the plurality of resource-sharing configurations based on a determination that the one or more switching conditions are present, and transmitting data over at least one of the first subscription or the second subscription based on the selected resource-sharing configuration.