SIM Power Stabilization via Charging Unit
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Solution Overview
Problem
Conventional SIM-based mobile devices experience fluctuations in electric power supply, leading to inadequate power delivery to the RF communication unit during base station searches, which disrupts normal data communication between the SIM and the controller.
Innovation Solution
A method and apparatus that includes a power amplifier module, a SIM electric power supply with a charging unit, and a controller to stabilize power supply by storing energy and adjusting voltage levels, ensuring uniform power delivery to the SIM even during voltage drops.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the mobile device supplies sufficient power to the RF communication unit for base station search operations, then the search function is improved, but the power supply to the SIM becomes insufficient causing communication failures
Solution Approach 1:
The power supply system is segmented into separate paths: one for the RF communication unit and another for the SIM. The charging unit is specifically inserted in the SIM power supply path to regulate and stabilize power delivery independently, allowing the RF unit to consume high power during base station searches without affecting SIM communication reliability
Solution Approach 2:
The charging unit acts as an intermediary component between the power source and the SIM. It buffers and regulates the power supply, ensuring stable voltage and current delivery to the SIM even when the overall system experiences power fluctuations during high-consumption operations like base station searches
2Productivity
If the mobile device operates with high power consumption during base station searches, then the search capability is improved, but voltage drops occur disrupting SIM communication
Solution Approach 1:
The charging unit is positioned in advance in the power supply path to the SIM, providing a buffer that cushions against voltage drops. This preemptive measure ensures that even when the RF communication unit consumes high power during base station searches, the SIM receives stabilized power and maintains reliable data communication
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution ensures stable electric power supply to the SIM, preventing recognition failures and maintaining normal data communication between the SIM and the controller, even in situations where power consumption exceeds typical levels during base station searches.
Implementation Method 1
a charging unit, installed in the SIM electric power supply, for storing a certain amount of electric power output from the electric power source, and for providing the stored electric power to the SIM according to the state of the SIM
Data Source
AI summary
An electric power control method and a mobile device adapted thereto are provided that stores power for subsequent provision to a Subscriber Identity Module (SIM). In exemplary operation, both an RF communication unit and a charging unit are operative. The charging unit is coupled to a SIM electric power supply and the SIM. Upon occurrence of a voltage drop in the electric power supplied to the SIM, there is a switch to the charging unit to supply the charged electric power to the SIM.