SIM Card Switching with RF Occupation Detection
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Solution Overview
Problem
Existing SIM card switching methods in dual SIM dual standby devices often result in incorrect switching due to reliance on transport and network layer parameters that fail to account for short-term radio frequency occupation, leading to unnecessary traffic consumption and user delays.
Innovation Solution
The method involves determining SIM card switching based on radio frequency occupation information, including specific signaling priorities, to accurately assess network connection quality and prevent incorrect switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If SIM card switching is based on transport and network layer parameters, then switching can be performed automatically, but incorrect switching occurs due to short-term radio frequency occupation
Solution Approach 1:
The patent introduces a timer mechanism that performs preliminary detection before executing SIM card switching. When network connection abnormality is detected, the system starts a timer and only triggers switching if the abnormality persists beyond the timer threshold, preventing premature switching decisions based on transient conditions
Solution Approach 2:
The system implements feedback through continuous monitoring of network connection parameters and radio frequency occupation status. The switching decision is based on feedback from multiple parameter observations over time, ensuring that switching occurs only when genuinely needed and not due to temporary RF interference
2Loss of time
If SIM card switching is performed frequently to maintain network connection quality, then data service delay is reduced, but traffic consumption increases
Solution Approach 1:
The patent applies partial action by implementing selective switching based on comprehensive parameter evaluation. Instead of switching whenever any single parameter degrades, the system only switches when multiple parameters indicate genuine network quality issues, reducing unnecessary switching operations and associated traffic consumption
3Measurement precision
If multiple parameters are monitored for SIM card switching decision, then switching accuracy improves, but system complexity increases
Solution Approach 1:
The patent segments the parameter monitoring system into distinct functional modules: network layer parameter monitoring, transport layer parameter monitoring, radio frequency occupation detection, and timer-based decision logic. This segmentation allows each module to handle specific parameters independently, improving measurement precision while managing system complexity through modular architecture
Data Source
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AI summary
An objective of this application is to provide a SIM card switching method and apparatus, and an electronic device, so that the electronic device can quickly and accurately perform SIM card switching. The electronic device comprehensively determines, based on a use status of a radio frequency and a network connection status, whether a SIM card needs to be switched. When the radio frequency is used by a specific service, a network connection is temporarily abnormal. However, this temporarily abnormal network connection does not affect operation experience of a user. In this case, if the SIM card is switched, traffic of the SIM card is wasted, and time consumption during SIM card switching also increases a user operation delay. Consequently, determining whether to switch the SIM card only based on the network connection causes incorrect SIM card switching. In this application, incorrect SIM card switching can be avoided. This not only improves SIM card switching efficiency of the electronic device, but also prevents the electronic device from performing incorrect SIM card switching and repeated SIM card switching, thereby improving user experience.