UWB Frequency Stitching Feedback for Reliable Wideband Sensing
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Solution Overview
Problem
UWB devices with low costs and low power consumption are limited by the performance of analog-to-digital converters, preventing them from processing large-bandwidth UWB signals, and existing frequency stitching technologies lack reliability, limiting sensing performance in UWB systems.
Innovation Solution
A method and apparatus for UWB systems that utilize specific message content to define feedback policies and sending policies for frequency stitching, enhancing sensing performance by improving reliability and efficiency through coordinated frequency band utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If frequency stitching technology is used to enable low-cost UWB devices to process large-bandwidth signals, then device cost and power consumption are reduced, but reliability of frequency stitching is low
Solution Approach 1:
The patent introduces a feedback mechanism where the first device feeds back sensing results to the second device based on predefined feedback policies. This feedback loop enables the system to verify and adjust frequency stitching operations, thereby improving reliability while maintaining low-cost hardware architecture
Solution Approach 2:
The patent divides the frequency band into multiple sub-bands that are processed separately and then stitched together. By segmenting the frequency spectrum and handling each segment independently with feedback verification, the system achieves reliable frequency stitching without requiring expensive single-wideband hardware
2Device complexity
If frequency stitching is implemented without specific feedback policies, then device complexity is reduced, but sensing performance is limited
Solution Approach 1:
The patent defines feedback policies in advance before the frequency stitching process begins. These pre-established policies guide the sensing result feedback mechanism, ensuring high sensing performance is achieved through structured procedures rather than complex real-time decision-making
Solution Approach 2:
The patent utilizes different feedback policies that can be configured based on system requirements. By changing the feedback policy parameters (such as which frequency bands to feedback, when to feedback, and what data to include), the system achieves high sensing performance without requiring complex hardware modifications
Data Source
AI summary
This application provides a sensing method and an apparatus, to implement sensing through frequency stitching. A second device sends a first message, and a first device receives the first message. The first message includes first information indicating a feedback policy for a sensing result corresponding to a plurality of frequency bands, and the plurality of frequency bands are used for frequency stitching. The first device sends a second message to the second device based on the first message. The second message includes a sensing result corresponding to at least one of the plurality of frequency bands. In this solution, reliability of implementing sensing through frequency stitching can be improved, and sensing performance of a UWB system can be improved.