5G Beam Power Control for MPE Exposure Reporting
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Solution Overview
Problem
Existing 5G user devices face challenges in managing electromagnetic exposure compliance with FCC regulations, leading to unpredictable radio link failures and connection drops due to excessive power reduction, necessitating a dynamic and proactive indication of maximum permissible exposure (MPE) conditions.
Innovation Solution
A method and apparatus for user devices and access nodes to utilize channel status reporting configurations with exposure indication sequences to adjust transmission power proactively, allowing for dynamic power management and beam adjustments to comply with MPE regulations, thereby maintaining reliable radio links.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If transmission power is reduced to comply with MPE regulations, then electromagnetic exposure compliance is improved, but radio link reliability deteriorates
Solution Approach 1:
The system performs preliminary actions by proactively indicating MPE conditions before they cause link failures. The user device sends MPE indication information to the access node in advance, allowing the network to adjust parameters preemptively rather than reactively after a failure occurs.
Solution Approach 2:
The patent implements feedback mechanisms where the user device continuously monitors and reports MPE conditions to the access node. The access node receives this feedback and dynamically adjusts transmission parameters based on the reported exposure levels, creating a closed-loop control system that balances compliance and reliability.
2Object-affected harmful factors
If transmission power is dynamically adjusted based on MPE conditions, then electromagnetic exposure compliance is improved, but system complexity increases
Solution Approach 1:
The user device autonomously determines MPE conditions and generates indication information without requiring complex centralized control. The device independently monitors its own transmission parameters and exposure conditions, performing self-service power management while reporting only essential information to the network.
Solution Approach 2:
The system manages complexity by changing a single key parameter - the MPE indication information - rather than dynamically adjusting multiple transmission parameters simultaneously. This simplified parameter change approach allows compliance management without overwhelming system complexity.
3Productivity
If MPE conditions are not proactively indicated, then system operation is simpler, but radio link failures increase
Solution Approach 1:
The patent implements feedback mechanisms where the user device continuously monitors and reports MPE conditions to the access node. The access node receives this feedback and dynamically adjusts transmission parameters based on the reported exposure levels, creating a closed-loop control system that balances compliance and reliability.
Solution Approach 2:
The system performs preliminary actions by proactively indicating MPE conditions before they cause link failures. The user device sends MPE indication information to the access node in advance, allowing the network to adjust parameters preemptively rather than reactively after a failure occurs.
Data Source
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AI summary
According to an example, there is provided an apparatus being configured to: receive, by a user device from an access node, at least one channel status reporting configuration dedicated for reporting exposure incidents of power or energy density, wherein the at least one channel status reporting configuration comprises at least one exposure indication sequence; determine or predict an exposure incident for at least one beam, and as a response to the determining or predicting the exposure incident adjust experienced transmission power, report the exposure incident to the access node by a channel status message comprising the at least one exposure indication sequence and information on the adjusting using physical channel resources according to the at least one channel status reporting configuration, and receive, as a response to the reporting, control information, wherein the control information comprises acknowledgement to the adjusting, transmission configuration and/or information request.