DSDA Signal Path Assignment for Dynamic Multi-SIM Uplink Power
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Solution Overview
Problem
Existing wireless communication devices with multi-subscriber identification module (SIM) capabilities are limited to statically assigning a high-powered signal path to only one SIM, restricting the use of higher power modes for multiple SIMs, and there is a need for dynamic power class assignment to optimize uplink transmission based on network configuration, radio conditions, and safety constraints.
Innovation Solution
The method involves dynamically assigning a high-powered signal path to the SIM that can most benefit from the higher power transmission capability, considering factors like network configuration, radio conditions, SIM/subscription state, and safety constraints, using diagnostic components to adjust uplink transmit power as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a high-powered signal path is statically assigned to one SIM, then the SIM can achieve higher transmit power for uplink transmissions, but the other SIMs are restricted to lower power modes and cannot utilize the high-powered signal path
Solution Approach 1:
The patent implements dynamic signal path assignment where the high-powered signal path can be reassigned between different SIMs based on real-time communication parameters such as network configuration, radio conditions, and safety constraints. This allows the system to adaptively allocate the high-powered signal path to the SIM that most needs it at any given time, rather than being permanently bound to one SIM.
Solution Approach 2:
The system changes the assignment parameter of the signal path from a static SIM-specific mapping to a dynamic parameter that can be modified based on communication conditions. By evaluating parameters like network power limits, radio channel quality, and SAR constraints, the system determines which SIM should currently use the high-powered signal path, enabling flexible reassignment without hardware changes.
2Reliability
If the high-powered signal path is assigned to a SIM, then uplink transmission performance is improved, but power consumption and safety constraints must be managed
Solution Approach 1:
The system continuously monitors communication parameters including network power limits, radio channel conditions, and safety metrics such as SAR (specific absorption rate). Based on this feedback, the system dynamically adjusts which SIM uses the high-powered signal path and at what power level, ensuring that communication performance is optimized while staying within safety constraints. The high-powered signal path is only assigned when conditions warrant its use.
3Adaptability or versatility
If multiple SIMs can access high-powered signal paths, then versatility is improved, but device complexity increases
Solution Approach 1:
The patent segments the signal paths into distinct hardware configurations, with at least one high-powered signal path and one or more lower-powered signal paths. Each SIM can be assigned to a specific signal path based on current needs. This segmentation allows the system to provide high-powered capability to multiple SIMs sequentially or simultaneously (if hardware permits) without requiring all signal paths to be high-powered, thus managing complexity while maintaining versatility.
Data Source
AI summary
Aspects of the disclosure provide methods and apparatus for dynamically assigning signal paths to multiple subscriptions in a user equipment (UE) that supports dual subscription dual active (DSDA) communications. The dynamic assignment of signal paths provide dynamic implementation of power classes for uplink transmissions based on communication parameters of the networks associated with the dual subscriptions.