RFFE TX Signal Blocking for Damage Prevention Control
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Solution Overview
Problem
As portable terminals, such as smartphones, increasingly utilize multiple mobile communication standards and RF bands with limited hardware, the control of RFFE elements becomes complex, leading to potential damage from improperly handled TX signals, necessitating a solution to prevent or reduce damage to RFFE elements.
Innovation Solution
An electronic device that monitors the operating state information of the RFFE and blocks or reduces TX signals when the state does not meet a damage prevention condition, using a memory device and a TX signal controller to generate control signals, thereby preventing damage to the RFFE elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the RFFE is configured to support multiple mobile communication standards and RF bands, then the adaptability of the portable terminal is improved, but the complexity of controlling RFFE elements increases leading to potential damage
Solution Approach 1:
The patent implements a feedback mechanism where the controller continuously monitors the operating state information of the RFFE elements and compares it against predetermined damage prevention conditions. When abnormal conditions are detected, the controller automatically adjusts or blocks TX signals to prevent damage, creating a closed-loop control system that manages the complexity of multi-standard support.
Solution Approach 2:
The patent establishes predetermined damage prevention conditions for RFFE elements before actual damage can occur. By pre-defining safe operating parameters and thresholds, the system proactively prevents damage rather than reacting after failure occurs, enabling complex multi-band operations to be managed safely through advance configuration.
2Reliability
If the controller monitors and controls TX signals to prevent RFFE damage, then the reliability of the RFFE is improved, but the device complexity increases due to additional monitoring and control mechanisms
Solution Approach 1:
The controller receives operating state information from the RFFE elements, compares it with predetermined damage prevention conditions, and generates control signals to block or adjust TX signals when abnormalities are detected. This feedback loop ensures reliable protection while keeping the control logic integrated within the existing controller architecture.
Solution Approach 2:
The RFFE elements themselves provide their operating state information to the controller, enabling self-monitoring without requiring external monitoring equipment. The system uses its own internal resources to detect and prevent damage, reducing the need for additional complex external protection mechanisms.
3Reliability
If the TX signal is blocked or reduced when damage prevention conditions are not met, then the RFFE elements are protected from damage, but the productivity of signal transmission is reduced
Solution Approach 1:
The system takes preliminary protective action by blocking or reducing TX signals only when predetermined damage prevention conditions are violated. This selective approach prevents damage while allowing normal signal transmission to proceed uninterrupted during safe operating conditions, thus maintaining high transmission productivity during normal operation.
Solution Approach 2:
The controller applies partial action by selectively blocking or reducing TX signals only for specific RFFE elements or specific frequency bands that are experiencing abnormal conditions, rather than blocking all transmissions. This allows protected elements to operate safely while maintaining signal transmission productivity for unaffected elements.
Data Source
AI summary
An electronic device for preventing or reducing damage to a radio frequency front end (RFFE). The electronic device including a memory device configured to store operating state information of a RFFE and a damage prevention condition of the RFFE, the RFFE providing a signal path for delivering a first transmission (TX) signal to an antenna, and a TX signal controller configured to generate a TX signal control signal in response to determining that the operating state information does not satisfy the damage prevention condition, the TX signal control signal causing the first TX signal to be blocked or a magnitude of the first TX signal to be reduced.