Wireless Object Detection Using Configured RCS Profile Matching
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Solution Overview
Problem
Existing LoS/NLOS indication methods in 3GPP Rel-17/18 are insufficient for certain sensing or detection applications, as they do not provide sufficient information for accurately determining the radar cross section (RCS) profiles of targets.
Innovation Solution
A wireless transmit/receive unit (WTRU) receives a configured target profile and information about a target, generates a measured profile from received signals, and compares these to determine if the signals were reflected by the target, using aspects like positioning information, power, phase, and signal quality to perform sensing measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If hard or soft LoS/NLOS indication information is exchanged between WTRU and RAN, then basic location management is achieved, but the information is insufficient for accurate sensing or detection applications requiring RCS profile determination
Solution Approach 1:
The network pre-configures the WTRU with a target profile database containing RCS profiles of multiple targets before sensing operations begin. This preliminary preparation enables the WTRU to quickly compare measured profiles against known targets without requiring extensive real-time information exchange, thereby improving measurement precision while minimizing information loss during actual detection
Solution Approach 2:
The system implements a feedback mechanism where the WTRU measures signal profiles, compares them against configured target profiles, and reports detection results back to the network. The network can then provide additional configuration information or updated target profiles based on these measurements, creating a closed-loop system that progressively improves RCS profile determination accuracy through iterative refinement
2Measurement precision
If multiple signal aspects (positioning information, power, phase, amplitude, frequency, angle-of-arrival) are measured and compared, then object detection accuracy is enhanced, but the device complexity increases
Solution Approach 1:
The sensing measurement process is segmented into distinct functional modules: signal reception, profile generation, comparison logic, and detection determination. Each module handles a specific aspect of the measurement process independently, allowing the system to process multiple signal aspects (positioning, power, phase, amplitude, frequency, angle-of-arrival) without overwhelming complexity. This modular segmentation enables accurate object detection while maintaining manageable device complexity through structured organization of measurement functions
Solution Approach 2:
The WTRU is designed with multi-functional sensing capabilities that can measure and process multiple signal aspects simultaneously using a unified target profile comparison mechanism. The same comparison logic handles diverse measurement types (positioning information, power, phase, amplitude, frequency, angle-of-arrival), eliminating the need for separate dedicated systems for each measurement type. This universal approach enhances object detection accuracy across multiple parameters while avoiding the complexity increase that would result from implementing separate specialized systems for each signal aspect
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances the accuracy of object detection by utilizing configured and measured profiles to determine signal reflection, enabling improved sensing and measurement capabilities.
Implementation Method 1
an RS may be transmitted from the TRP in the direction of the sensing target, which reflects this transmitted signal toward the WRTU
Data Source
AI summary
Procedures, methods, architectures, apparatuses, systems, devices, and computer program products are provided for object detection over a wireless network. A method performed by a wireless transmit/receive unit (WTRU) includes receiving, from a wireless network, a configuration that includes a configured target profile for a target and information indicative of an identification of the target, wherein the configured target profile comprises a radar cross section profile associated with the target; receiving at least one signal from the wireless network; generating a measured profile based on the at least one signal; determining that the at least one signal was reflected by the target based at least in part on the information indicative of the identification of the target and a comparison between the configured target profile and the measured profile; and performing sensing measurements associated with the target using the at least one signal based at least in part on the determination.