Communication Chip Antenna Blockage Detection Using Loopback Attenuation
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Solution Overview
Problem
Communication devices, such as mobile phones, often experience weakened or lost signals due to blocked antennas, either from protective cases or user handling, without providing clear feedback to users.
Innovation Solution
An antenna blocking alarm method is implemented in communication devices, where a communication chip measures the attenuation of an air interface loopback signal to determine if the antenna is blocked, and outputs alarm information to the user when a blockage is detected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the user uses protective cases or holds the device with both hands, then the antenna is blocked causing weak or no signal, but the user cannot determine the reason for signal quality deterioration
Solution Approach 1:
The system implements a feedback mechanism by continuously monitoring signal quality through the communication chip and providing real-time information to the user via the processor. When the communication chip detects abnormal signal attenuation indicating antenna blockage, it triggers the processor to display alert information, creating a closed-loop feedback system that informs users of the blockage condition so they can take corrective action.
2Ease of operation
If the communication chip continuously monitors signal attenuation to detect antenna blockage, then user experience is improved, but device complexity increases
Solution Approach 1:
The communication chip performs self-diagnosis by autonomously monitoring its own signal transmission and reception quality. It independently calculates signal attenuation, compares it against threshold values, and determines whether antenna blockage has occurred. This self-service capability eliminates the need for separate dedicated monitoring hardware, reducing overall system complexity while maintaining continuous detection functionality.
Solution Approach 2:
The existing communication chip, originally designed for standard communication functions, is enhanced to also perform antenna blockage detection. By making the communication chip multi-functional (handling both communication and diagnostic tasks), the system avoids adding separate monitoring subsystems, thereby improving user experience without proportionally increasing device complexity.
3Measurement precision
If the communication chip measures signal attenuation through air interface loopback, then measurement precision is improved, but energy consumption increases
Solution Approach 1:
Instead of continuously measuring signal attenuation, the system employs periodic measurement at specific intervals or under specific conditions (such as when signal quality thresholds are breached). This periodic action maintains measurement precision by regularly updating attenuation data while significantly reducing energy consumption compared to continuous monitoring, as the communication chip only activates measurement functions when necessary.
Data Source
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AI summary
Embodiments of this application disclose an antenna blocking alarm method, and a communication chip and device, and relate to the chip field, to resolve a problem that a communication device cannot prompt a user when the user uses the communication device and an antenna of the communication device is blocked. A specific solution is as follows: The communication chip obtains an attenuation value of an air interface loopback signal through an antenna; then, the communication chip determines, based on the attenuation value, whether the antenna is blocked; and when determining that the antenna is blocked, the communication chip indicates a processor to output, to a user, alarm information prompting that the antenna is blocked.