Cell Group Metric Detection for MPE Events in Carrier Aggregation
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Solution Overview
Problem
Existing wireless communication devices face challenges in detecting maximum permissible exposure (MPE) events when multiple component carriers are configured for inter-band carrier aggregation, as they lack effective methods to measure and report cell group metrics across multiple cells, leading to inadequate power management and potential harm to human bodies.
Innovation Solution
A method and apparatus for wireless communication devices to measure and report a cell group metric considering multiple configured cells or component carriers, allowing for improved detection of MPE events by adjusting transmission parameters, such as power reduction or beam switching, through components like metric determining and communicating components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a device measures MPE events considering only a single cell or component carrier, then the measurement process is simple, but the detection accuracy is insufficient when multiple component carriers are configured for inter-band carrier aggregation
Solution Approach 1:
The patent combines measurements from multiple component carriers into a single cell group metric. The metric determining component aggregates MPE-related measurements (such as received signal energy, transmission power, or signal-to-noise ratio) across all active serving cells to produce a comprehensive cell group metric that reflects the overall MPE exposure risk, thereby improving detection accuracy without requiring separate analysis of each carrier
Solution Approach 2:
The cell group metric serves multiple functions: it consolidates MPE measurements from various component carriers, provides a unified basis for MPE event detection, and enables standardized reporting to the network. This multi-functional approach simplifies the overall system architecture while maintaining comprehensive MPE monitoring capabilities across inter-band carrier aggregation scenarios
2Reliability
If the device reports detailed MPE measurement information for each cell, then the network can make precise adjustments, but the signaling overhead and processing burden increase
Solution Approach 1:
The patent merges detailed individual cell MPE measurements into a consolidated cell group metric that captures the aggregate MPE exposure risk across all serving cells. This aggregated metric provides the network with sufficient information to make effective MPE mitigation decisions while avoiding the need to transmit and process separate measurement reports for each individual cell, thereby reducing signaling overhead
Solution Approach 2:
The patent transforms multiple detailed measurement parameters (received signal energy, transmission power, signal-to-noise ratio) from individual cells into a single composite cell group metric. This parameter transformation maintains the essential information needed for MPE mitigation while significantly reducing the amount of data that needs to be reported and processed in the network
Data Source
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AI summary
Aspects described herein relate to detecting maximum permissible exposure (MPE) events and/or reporting cell metrics related to MPE events. A cell group metric for multiple cells configured in inter-band carrier aggregation (CA) can be measured. Based on the cell group metric, occurrence of a maximum permissible exposure (MPE) event can be detected, and/or the cell group metric can be reported to one or more cells of the multiple cells based on detecting occurrence of the MPE event.