Power Headroom Reporting for Joint Communication-Radar Sensing
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Solution Overview
Problem
In joint communication and radar (JCR) systems, the power headroom report (PHR) does not accurately reflect the impact of sensing beams on communication beams, leading to erroneous communication parameter settings such as bandwidth and carrier aggregation configuration.
Innovation Solution
Generate a power headroom report that accounts for changes in transmit power and sensing configurations during JCR modes, including transmit power for sensing beams, power headroom for sensing configurations, and number of radar sensing beams, to accurately set communication parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a power headroom report is generated for communication during JCR sensing mode, then communication parameter setting accuracy is improved, but device complexity increases
Solution Approach 1:
The power headroom report is segmented into multiple components: a first power headroom value for communication, a second power headroom value for sensing, and a third power headroom value for combined operation. This segmentation allows the system to track and report power headroom for different operations separately, improving measurement precision while managing complexity through structured organization of data.
Solution Approach 2:
The patent introduces a power headroom report as an intermediary data structure that mediates between the communication and sensing functions. This report contains configuration information and power headroom values that serve as intermediate data, enabling accurate parameter setting without requiring direct complex interactions between all system components.
2Productivity
If sensing operations are performed concurrently with communication beams, then spectrum usage efficiency is improved, but communication transmit beam gain is reduced
Solution Approach 1:
The system dynamically adjusts communication transmit parameters based on real-time power headroom reports that include sensing configuration information. When sensing operations are detected, the system can adaptively modify communication beam parameters to maintain optimal gain while allowing concurrent sensing operations, thus balancing spectrum efficiency and communication performance.
Solution Approach 2:
The patent changes communication transmit parameters such as bandwidth, minimum communication range, and carrier aggregation configuration based on the power headroom report values. By adjusting these parameters dynamically according to the reported power headroom for sensing and combined operations, the system optimizes the trade-off between spectrum usage efficiency and communication beam gain.
3Reliability
If power headroom report includes sensing beam impact information, then communication performance is improved, but overhead signaling increases
Solution Approach 1:
The patent merges communication power headroom information and sensing power headroom information into a single integrated power headroom report structure. This combination allows the system to convey both communication and sensing power headroom values along with their respective configuration information in one reporting mechanism, improving communication performance while minimizing overhead signaling compared to separate reporting approaches.
Data Source
AI summary
This disclosure provides systems, methods, and devices for wireless communication that support a sensing charging subscription. In a first aspect, a method of wireless communication includes generating a power headroom report associated with or for communication during a joint communication-radar sensing mode. The method further includes transmitting the power headroom report. Other aspects and features are also claimed and described.