Power Headroom Reporting for Multi-Beam Wireless Terminals
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Solution Overview
Problem
Existing power headroom reporting methods do not accurately reflect the power status of terminals using multi-beam transmission, multiple time-frequency resource configurations, or multiple waveform technologies, leading to inaccurate bandwidth allocation and deteriorated communication performance.
Innovation Solution
A method and apparatus for calculating and reporting power headroom (PH) that considers beam-level power control parameters, time-frequency resource configurations, and waveform technologies, allowing terminals to calculate PH values for multiple beams, configurations, or waveforms and report them accurately to the network, enabling more precise scheduling decisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a terminal uses multi-beam transmission, multiple time-frequency resource configurations, or multiple waveform technologies, then the transmission capability and coverage are improved, but the existing power headroom reporting methods cannot accurately reflect the power status, leading to inaccurate bandwidth allocation and deteriorated communication performance
Solution Approach 1:
The patent segments the power headroom reporting by introducing separate reporting mechanisms for different beams, time-frequency resource configurations, and waveform technologies. Each beam or configuration can have its own power headroom report, allowing the network to accurately understand the power status for each specific transmission scenario rather than using a single aggregated value.
Solution Approach 2:
The patent adds new dimensions to the power headroom reporting by introducing beam-specific, configuration-specific, and waveform-specific reporting layers. This multi-dimensional reporting structure enables the network to allocate resources more accurately across different spatial, temporal, and spectral domains.
2Measurement precision
If the terminal reports power headroom for each beam separately, then the network can make more accurate scheduling decisions, but the reporting overhead and system complexity increase
Solution Approach 1:
The patent implements dynamic power headroom reporting where the terminal selectively reports power headroom information based on current transmission conditions. The reporting can be triggered by specific events or configured with different periodicities for different beams, allowing the system to adapt the reporting frequency and detail to actual needs rather than using a fixed rigid structure.
Solution Approach 2:
The patent applies local quality by allowing different reporting granularities for different beams or configurations. Not all beams need to report with the same level of detail or frequency - the reporting can be tailored to the specific characteristics and importance of each beam, reducing overall complexity while maintaining necessary accuracy.
Data Source
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AI summary
Embodiments of this application provide a power headroom reporting method and apparatus. Impact of introduction of multi-beam transmission, a plurality of time-frequency resource configurations, or an uplink multi-waveform technology on a power headroom is considered, so that the power headroom is calculated and reported more accurately, to help a network side make a scheduling decision, thereby improving communication performance.