Sensing Precoding Feedback for Scatterer Reporting Overhead
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Solution Overview
Problem
Existing communication systems face challenges in effectively reporting precoding feedback information in sensing systems, particularly in determining and transmitting accurate precoding information for scatterers to improve signal quality and efficiency.
Innovation Solution
A method where a wireless transmit/receive unit (WTRU) transmits sensing capability information to a transmit/receive point (TRP), receives configuration information, determines scatterers based on channel impulse responses, generates precoding information for each scatterer, and reports this information back to the TRP.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the WTRU reports detailed precoding information for all detected scatterers, then the precision of precoding feedback is improved, but the amount of uplink signaling overhead increases
Solution Approach 1:
The patent segments the set of detected scatterers into two distinct groups: a first set of scatterers for which the WTRU reports precoding information, and a second set of scatterers for which the WTRU reports effectiveness metrics. This segmentation allows the system to balance between providing sufficient precoding feedback precision and controlling uplink signaling overhead by selectively reporting different types of information for different scatterers.
Solution Approach 2:
The patent applies local quality by differentiating the reporting requirements for different scatterers. Instead of uniform reporting for all scatterers, the system allows the WTRU to report precoding information (with higher detail) for scatterers in the first set that benefit most from precise precoding, while reporting only effectiveness metrics (with lower overhead) for scatterers in the second set. This localized differentiation optimizes the trade-off between feedback precision and signaling overhead.
2Reliability
If the WTRU determines and reports precoding information for multiple scatterers, then the signal quality is improved, but the processing complexity and reporting overhead increase
Solution Approach 1:
The patent divides the processing and reporting tasks into two segments: determining precoding information for a first set of scatterers and determining effectiveness metrics for a second set of scatterers. This segmentation reduces processing complexity by allowing the WTRU to focus computational resources on generating precise precoding information for the most critical scatterers, while using simpler effectiveness metrics for other scatterers, thereby maintaining signal quality without excessive processing burden.
3Productivity
If the system uses traditional communication precoding feedback methods, then the communication efficiency is maintained, but the sensing performance and target detection accuracy deteriorate
Solution Approach 1:
The patent implements multi-functionality by designing a precoding feedback mechanism that simultaneously serves both communication and sensing functions. The WTRU reports precoding information and effectiveness metrics that can be utilized for both optimizing communication link performance and enhancing sensing/target detection accuracy. This universal approach allows the same feedback mechanism to improve both communication efficiency and sensing performance, rather than requiring separate dedicated systems.
Data Source
AI summary
Procedures, methods, architectures, apparatuses, systems, devices, and computer program products for reporting precoding information to a transmit/receive point (TRP) includes a wireless transmit/receive unit (WTRU) transmitting sensing capability information to the TRP, receiving, from the TRP, configuration information including reporting conditions based on the sensing capability information, and receiving a reference signal from the TRP. The methods further include the WTRU determining a first set of scatterers that meet first reporting conditions and generating first precoding information for each of the first set of scatterers based on at least one CIR of the received RS, and determining a second set of scatterers that meet second reporting conditions and generating a second precoding information for each scatterer of the second set of scatterers and each scatterer of the first set. The WTRU then generates a report including each of the precoding information, and transmits the report to the TRP.