Inertial Sensor-Based Transmit Power Management
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Solution Overview
Problem
Electronic devices lack the ability to control their transmit power levels, leading to potential user exposure to harmful radiation and non-compliance with FCC regulations regarding specific absorption rate (SAR), and they often interfere with each other during concurrent wireless connections.
Innovation Solution
A user device equipped with a transmit power manager that uses sensors and inertial data to dynamically adjust transmit power levels based on conditions such as human body proximity, radiation exposure, and interference, allowing for independent control of power levels beyond specifications dictated by wireless communication systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If electronic devices use fixed transmit power levels dictated by communication infrastructure, then communication reliability is maintained, but user exposure to radiation increases and FCC compliance cannot be ensured
Solution Approach 1:
The patent implements dynamic transmit power management by enabling electronic devices to autonomously adjust their transmit power levels based on real-time sensor data (proximity sensors, inertial sensors, temperature sensors) and environmental conditions, transforming the static power control system into a dynamic one that adapts to changing conditions while maintaining communication reliability
Solution Approach 2:
The system incorporates feedback mechanisms where sensor data about device orientation, proximity to body parts, and environmental conditions continuously feeds back to the transmit power manager, which then adjusts power levels accordingly, creating a closed-loop control system that balances radiation exposure with communication needs
2Object-affected harmful factors
If electronic devices lack transmit power management capability, then device complexity is reduced, but ability to control radiation exposure and ensure regulatory compliance is lost
Solution Approach 1:
The patent implements self-service by equipping electronic devices with integrated transmit power managers that autonomously monitor sensor data and adjust transmit power levels without requiring external control systems, enabling the device to self-regulate radiation exposure and ensure compliance independently
Solution Approach 2:
The transmit power manager serves multiple functions simultaneously: it monitors proximity sensor data, processes inertial sensor information, evaluates temperature conditions, manages power levels across multiple wireless connections, and ensures regulatory compliance, consolidating these diverse functions into a single universal control component
3Adaptability or versatility
If electronic devices establish multiple concurrent wireless connections, then communication versatility is improved, but radiation exposure to users increases and connection interference occurs
Solution Approach 1:
The patent applies local quality by enabling independent power management for each wireless connection and antenna, allowing the device to optimize power levels for specific connections based on local conditions such as which antenna is active and what sensors detect, rather than applying a uniform power level across all connections
Data Source
AI summary
A user device obtains motion data from an inertial sensor included in the user device. The user device receives a command to transmit information at a specified transmit power level. The user device determines, based on the motion data, whether the presence of a human body part is detected. When the presence of a human body part is detected, the user device reduces a current transmit power level below the specified transmit power level.