Wireless Transmitter Power Adaptation for Radiation Compliance
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Solution Overview
Problem
Conventional wireless devices face challenges in maintaining compliance with regulatory limits on electromagnetic radiation exposure while avoiding performance degradation, particularly when multiple wireless subsystems operate simultaneously, as they often rely on static power reductions that do not account for varying metrics and coexistence scenarios.
Innovation Solution
A smart adaption system dynamically adjusts transmission properties, such as power and frequency, based on specific human exposure compliance metrics and jurisdictional requirements, employing a centralized manager to balance power among multiple wireless subsystems and implement time-averaging at the host level to optimize performance and compliance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transmission power is reduced to comply with regulatory requirements, then compliance with radiation exposure limits is improved, but transmission performance deteriorates
Solution Approach 1:
The patent implements dynamic transmission power adjustment based on real-time conditions. The system continuously monitors compliance metrics and adjusts power levels dynamically rather than using static reductions, allowing the device to maintain maximum performance when compliant and reduce power only when necessary to meet regulatory limits.
Solution Approach 2:
The system changes transmission parameters (power levels, frequency bands, modulation schemes) based on compliance requirements. By adjusting these parameters dynamically, the system can maintain optimal performance within regulatory constraints rather than operating at fixed reduced power levels.
2Reliability
If static power reduction is applied to ensure compliance, then radiation exposure compliance is improved, but transmission performance and user experience deteriorate
Solution Approach 1:
The system replaces static power reduction with dynamic adjustment mechanisms that respond to real-time compliance metrics and transmission conditions. This allows the device to maintain high performance and user experience when compliance is not threatened, while automatically reducing power only when necessary.
Solution Approach 2:
The patent implements feedback loops that continuously monitor compliance metrics and adjust transmission parameters accordingly. This closed-loop control ensures compliance while minimizing impact on user experience by making adjustments only when and where necessary.
3Reliability
If additional power reductions are applied to satisfy each compliance metric, then compliance with regulatory limits is improved, but transmission performance and user experience further deteriorate
Solution Approach 1:
The patent combines multiple compliance metric evaluations into a unified power adjustment strategy. Instead of applying separate power reductions for each metric, the system integrates them into a single coordinated approach that achieves compliance with all metrics while minimizing overall performance impact.
Solution Approach 2:
The system adjusts transmission parameters to satisfy multiple compliance metrics simultaneously through coordinated optimization rather than cumulative reductions. This allows the device to meet all regulatory requirements while maintaining the highest possible transmission performance.
Data Source
AI summary
Disclosed herein are devices, methods, and systems for adjusting transmit properties based on compliance metrics for human exposure to radiation. As one example, the system determines a first transmission power limit associated with transmissions on a first radio resource, wherein the first transmission power limit is based on a first compliance level threshold of human exposure to emitted radiation when using the first radio resource. The system determines a second transmission power limit associated with transmissions on a second radio resource, wherein the second transmission power limit is based on a second compliance level threshold of human exposure to emitted radiation when transmitting using the second radio resource. The system also controls a wireless device to select either the first radio resource or the second radio resource for a transmission from the wireless device based on the first transmission power limit and the second transmission power limit.