RF Sensing Scattering Region Signaling for Accurate Target Detection
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Solution Overview
Problem
Existing wireless communication systems, particularly in the context of 5G, face challenges in accurately determining the scattering regions of sensing targets for effective radio frequency (RF) sensing, which is crucial for applications like positioning and sensing the presence of devices or obstacles, as they lack efficient methods to select and process sensing signals based on target dimensions.
Innovation Solution
A method and system for RF sensing that involves a sensing node performing operations in a scattering region of a target and sending results to a sensing server, with the server requesting and receiving information about the scattering region, enabling the selection of appropriate sensing signals and processing based on target dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensing operations are performed without targeting specific scattering regions, then the sensing coverage is broad, but the sensing accuracy and effectiveness decrease
Solution Approach 1:
The patent segments the sensing process into distinct phases: scattering region identification, parameter estimation, and targeted sensing signal transmission. By dividing the sensing operation into these modular steps, the system can focus computational resources on identifying and analyzing specific scattering regions, thereby improving sensing accuracy without proportionally increasing overall system complexity
Solution Approach 2:
The patent performs preliminary scattering region identification and parameter estimation before transmitting the actual sensing signal. This preliminary action allows the system to pre-determine the optimal scattering regions and characteristics, enabling more accurate and effective sensing operations while reducing waste of resources on non-scattering areas
2Adaptability or versatility
If sensing signals are transmitted across all frequency bands, then the sensing coverage is comprehensive, but the energy consumption and processing complexity increase
Solution Approach 1:
The patent applies local quality by transmitting sensing signals with characteristics specifically tailored to each identified scattering region. Instead of using a uniform sensing approach across all frequencies, the system adapts signal parameters (such as frequency, power, and waveform) to match the local scattering characteristics, thereby improving sensing effectiveness while reducing energy consumption in non-optimal frequency bands
Solution Approach 2:
The patent dynamically changes sensing signal parameters based on the identified scattering region characteristics. By adjusting frequency, power, and other signal parameters according to the specific scattering properties detected, the system achieves versatile sensing capability across different target types while minimizing energy consumption by avoiding transmission in frequencies that will not produce useful scattering
3Reliability
If scattering region information is not identified beforehand, then the sensing process is simpler, but the effectiveness of RF sensing operations decreases
Solution Approach 1:
The patent performs preliminary identification of scattering regions and estimation of their characteristics before the main sensing operation. This advance preparation ensures that when the sensing signal is transmitted, the system can immediately focus on the correct regions, thereby improving RF sensing effectiveness without significant time loss, as the identification process occurs in parallel or prior to signal transmission
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
This approach allows for targeted RF sensing by selecting appropriate frequencies and processing methods, enhancing the accuracy and effectiveness of RF sensing operations.
Implementation Method 1
performing a sensing operation on a sensing target, using a sensing signal in a scattering region of the sensing target
Data Source
AI summary
Disclosed are techniques for wireless sensing, and in particular for target scattering region indication and signaling for radio frequency (RF) sensing. In an aspect, a method of RF sensing, performed by a sensing node, includes performing a sensing operation on a sensing target, using a sensing signal in a scattering region of the sensing target; and sending, to a sensing server, a result of the sensing operation and information identifying the scattering region of the sensing target. In an aspect, a method of RF sensing, performed by a sensing server, includes sending, to a sensing node, a request to sense a sensing target, the request indicating a scattering region in which to perform a sensing operation; and receiving, from the sensing node, a result of the sensing operation.