Reference Signal Set Power Control for Multi-Panel Wireless Nodes
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Solution Overview
Problem
Existing power control methods for radio signals transmitted on multiple panels in wireless communication systems are complex and inefficient, particularly in scenarios requiring beamforming and reduced latency, leading to high demands on RF and Power Amplifier resources.
Innovation Solution
A power control method where multiple panels are adjusted separately using a first bit field to determine a reference signal resource set associated with multiple indexes, with power values determined by power offsets indicated by specific bit fields, allowing for unified power control across panels while maintaining flexibility and reducing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate power control is applied to each panel, then transmission performance is improved, but device complexity and RF/PA resource demands increase
Solution Approach 1:
The patent segments the power control mechanism by introducing separate TPC commands for each panel (first TPC command for first panel, second TPC command for second panel). This allows independent power adjustment per panel while maintaining overall system coordination, resolving the contradiction between performance improvement and complexity reduction.
Solution Approach 2:
The patent adds a new dimension to power control by introducing panel-specific TPC commands and power offset indicators. Instead of single-dimension power control, the system now operates in multiple dimensions (panel identity, power offset, TPC command), enabling fine-grained control without proportionally increasing overall system complexity.
2Adaptability or versatility
If multiple TPC commands are used for multiple panels, then power control flexibility is improved, but signaling overhead increases
Solution Approach 1:
The patent creates a universal power control framework where the same TPC command structure and power offset indication mechanism are applied across multiple panels. This multi-functional approach allows the system to handle different panel configurations (1 panel, 2 panels, or more) using the same basic mechanism, providing flexibility without linearly increasing signaling overhead.
Solution Approach 2:
The patent changes key parameters including introducing panel-specific power offset indicators (first power offset indicator, second power offset indicator) and panel-specific TPC commands. By carefully managing these parameter changes and reusing existing signaling structures where possible, the patent achieves enhanced flexibility while controlling the increase in signaling overhead.
3Device complexity
If unified power control is applied across panels, then implementation complexity is reduced, but adaptability to different panel configurations decreases
Solution Approach 1:
The patent introduces dynamic power control where power offsets and TPC commands can be adjusted independently for each panel based on current transmission conditions. The system can dynamically select which panels to activate and how to distribute power among them, providing adaptability to different panel configurations while maintaining manageable implementation complexity through standardized procedures.
Data Source
AI summary
The disclosure provides a method and a base station device for wireless communication. A RRC signaling having reference signal resource set(s) and second-type bit field(s) is transmitted, each of the second-type bit field(s) for indicating one power offset and corresponding to one of a plurality of indexes related to the reference signal resource set(s), the second-type bit field(s) including only one second-type bit field corresponding to a first index of the indexes. A PHY signaling having a first bit for determining a first reference signal resource set associated to the plurality of indexes is transmitted. Then a first radio signal at a first power value that is only related to power offsets indicated by all second-type bit fields among the second-type bit field(s) that correspond to the first index is received, the first radio signal being Quasi Co-located with one of the reference signal resource set(s).