Beam-Pair MPE Reporting for Multi-TRP Uplink Power Control
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Solution Overview
Problem
Current MPE reporting structures in wireless communication systems are inadequate for handling simultaneous uplink transmissions or multi-TRP operations, as they fail to identify suitable beams for power reduction in scenarios involving multiple transmission-reception points or different panels, leading to potential radio link failures and connection issues.
Innovation Solution
A user device selects and reports beam pairs for simultaneous uplink transmissions or multi-TRP operations, including beams corresponding to different panels or capability value sets, along with associated power reduction values, to a network node, enabling more effective power management and reducing exposure violations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If current MPE reporting structures are used, then the reporting process is simple, but they fail to identify suitable beams for power reduction in multi-TRP operations, leading to radio link failures
Solution Approach 1:
The patent segments the beam reporting process by introducing beam pairs grouped in sets, where each set corresponds to specific use cases (simultaneous uplink transmissions, multi-TRP operations, or different panels). This segmentation allows the system to handle complex multi-TRP scenarios through structured, organized reporting while maintaining manageable complexity through clear categorization of beam relationships
Solution Approach 2:
The patent adds a new dimension to MPE reporting by organizing beams into pairs and grouping pairs into sets, creating a hierarchical structure (beams → pairs → sets). This dimensional organization transforms the flat beam reporting approach into a multi-layered structure that captures complex spatial relationships in multi-TRP operations, enabling reliable identification of suitable beams for power reduction
2Productivity
If beam pairs are selected for simultaneous uplink transmissions or multi-TRP operations, then uplink transmission performance is improved, but the power management complexity increases
Solution Approach 1:
The patent applies preliminary action by having the user device pre-select and report beam pairs to the network node before actual uplink transmissions occur. The device identifies suitable beam pairs for simultaneous transmissions or multi-TRP operations in advance, allowing the network to prepare appropriate power management strategies and resource allocations, thereby improving transmission performance while managing complexity through advance planning
Solution Approach 2:
The patent implements feedback mechanisms where the user device reports MPE status and beam pair information to the network node. The network uses this feedback to adjust power management decisions, beam selections, and resource allocations. This closed-loop feedback system enables dynamic optimization of uplink transmission performance while keeping power management complexity manageable through data-driven decisions
Data Source
AI summary
A method comprises selecting, by a user device in a wireless network, one or more beam pairs, wherein each beam pair comprises at least one of: beams corresponding to different panels or capability value sets, beams that are to be used by the user device for simultaneous uplink transmissions, or beams that are to be used by the user device for multiple transmission-reception points (multi-TRPs) operation; and transmitting, by the user device to a network node, a maximum permissible exposure (MPE) report comprising at least one power reduction value for at least one of the selected one or more beam pairs.