Dual-SIM Power Reduction via Single Protocol Stack
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Solution Overview
Problem
Dual-SIM devices experience increased power consumption due to the need for separate protocol stacks and independent scheduling of background public land mobile network scans and neighbor cell detection, which doubles the power usage compared to single-SIM devices, especially in idle mode.
Innovation Solution
Implementing a single protocol stack for both the home SIM and the configurable SIM, allowing them to share the same network and register automatically with the local network, thereby reducing power consumption by coordinating actions and eliminating the need for separate protocol stacks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate protocol stacks are used for each SIM, then each SIM can independently communicate with its network, but power consumption doubles compared to single-SIM devices
Solution Approach 1:
The patent merges the protocol stack functionality into a single shared stack that serves both SIMs, rather than maintaining separate stacks. This consolidation eliminates redundant processing and reduces power consumption while maintaining the ability to independently communicate with both networks through the shared protocol infrastructure.
Solution Approach 2:
The protocol stack is designed to be universal and multi-functional, capable of handling communications for both SIMs simultaneously. This single protocol stack performs the work of what would traditionally require two separate stacks, reducing overall system complexity and energy consumption while maintaining full network communication capabilities for both SIMs.
2Reliability
If independent scheduling of background PLMN scans and neighbor cell detection is implemented for each SIM, then each SIM maintains optimal network connection, but the complexity of network management increases
Solution Approach 1:
The patent combines the background PLMN scan and neighbor cell detection operations into a unified scheduling mechanism within the shared protocol stack. Instead of running independent scanning processes for each SIM that would double the complexity, the system performs these functions once and shares the results across both SIMs, reducing management complexity while maintaining connection quality.
3Use of energy by moving object
If a single protocol stack is shared between both SIMs, then power consumption is reduced, but the ability to simultaneously handle communications for both SIMs may be compromised
Solution Approach 1:
The shared protocol stack implements dynamic resource allocation and time-division multiplexing to handle communications for both SIMs. The system can dynamically switch between SIMs or allocate processing resources based on current communication needs, ensuring that both SIMs maintain their communication capabilities while sharing the single protocol stack infrastructure efficiently.
Data Source
AI summary
Techniques are disclosed relating to reducing power consumption in dual-SIM devices. In some embodiments, a UE includes at least two SIMs, including a home SIM and a configurable SIM. In this embodiment, the UE is configured to register, using a first protocol stack, the configurable SIM with a local network. In these embodiments, the UE is configured to determine if the local network is an available network for the home SIM. In these embodiments, the UE is configured to register, using the first protocol stack, the home SIM with the local network in response to determining that the local network is an available network for the home SIM. In these embodiments, the UE is configured to monitor, using the first protocol stack, for pages for each of the home SIM using the identifier of the home SIM and the configurable SIM using the identifier of the configurable SIM.