Dual-SIM RAT Switching for Faster Packet Data Transfer
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Solution Overview
Problem
Existing electronic devices with multiple SIMs lack the ability to automatically select a SIM for better communication, such as higher data transmission speed or lower latency, during Internet packet data transmission.
Innovation Solution
The electronic device is configured to identify and switch to a SIM supporting a different radio access technology (RAT) for improved communication by using a processor to evaluate the feasibility of communication with a second network corresponding to a second SIM during data transmission or reception with a first SIM.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If manual SIM selection is used for Internet packet data transmission, then device complexity is reduced, but communication quality and data transmission speed deteriorate
Solution Approach 1:
The system automatically monitors communication quality parameters (signal strength, data transmission speed, latency) and autonomously selects the optimal SIM for Internet packet data transmission without requiring user intervention. The processor continuously evaluates multiple SIMs and switches to the best-performing SIM based on real-time network conditions.
Solution Approach 2:
The system implements a feedback mechanism where the processor continuously monitors communication quality metrics including signal strength, data transmission speed, and latency for each SIM. Based on this feedback, the system dynamically adjusts SIM selection to maintain optimal communication performance, switching SIMs when quality degradation is detected.
2Productivity
If automatic SIM selection based on communication quality is implemented, then data transmission speed and communication quality improve, but device complexity increases
Solution Approach 1:
The processor leverages existing multi-SIM capabilities and radio resource management functions already present in the device, extending their use to automatic SIM selection for Internet packet data. The system uses existing communication interfaces and monitoring capabilities to evaluate multiple SIMs, avoiding the need for entirely new hardware or complex dedicated selection mechanisms.
Solution Approach 2:
The system dynamically changes operational parameters including SIM selection, Radio Access Technology (RAT) type, and network configuration based on real-time communication quality measurements. The processor adjusts these parameters automatically to optimize data transmission speed and latency while managing device complexity through algorithmic control rather than hardware complexity.
3Measurement precision
If the device monitors and compares communication quality of multiple SIMs, then SIM selection accuracy improves, but use of energy increases
Solution Approach 1:
The system implements selective monitoring where the processor focuses measurement resources on the currently active SIM and periodically samples alternative SIMs rather than continuously monitoring all SIMs at full precision. This partial monitoring approach maintains adequate measurement precision for effective SIM selection while significantly reducing the energy consumption associated with constant high-precision monitoring of all available SIMs.
Data Source
AI summary
An electronic device is provided. The electronic device includes a processor, a plurality of SIMs connected to the at least one processor, wherein the at least one processor is configured to transmit or receive Internet packet data by using a first SIM, based on a first network and a first RAT, corresponding to the first SIM, when a second SIM supports a second RAT different from the first RAT, identify whether communication based on a second network and a second RAT, corresponding to the second SIM, can be performed during transmission or reception of the Internet packet data to or from the first network, and based on identifying that communication based on the second network and the second RAT, corresponding to the second SIM, can be performed, transmit or receive the Internet packet data based on the second network and the second RAT, corresponding to the second SIM.