Collaborative Wireless Sensing for TDOA Target Coverage
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Solution Overview
Problem
The sensing coverage of a single communication apparatus is limited, and it is difficult to implement continuous sensing of a moving target in a complex scenario, especially in scenarios with electromagnetic imaging requirements where high-frequency beams are narrow and obstacles obstruct line of sight signal transmission, leading to sensing link failures.
Innovation Solution
A sensing method and apparatus that enable collaboration between multiple communication apparatuses to enhance sensing capabilities by exchanging sensing collaboration mode and capability information, requesting and combining sensing data or echo signals based on coherent signal processing capabilities, and utilizing TDOA positioning to improve sensing coverage and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a single communication apparatus performs sensing, then the device complexity is low, but the sensing coverage is limited
Solution Approach 1:
The patent combines sensing capabilities of multiple communication apparatuses into a unified sensing system. Multiple apparatuses collaborate to perform joint sensing, where each apparatus contributes its sensing data and processing results. This merging approach expands the overall sensing coverage beyond what a single apparatus can achieve while distributing the computational burden across multiple devices.
Solution Approach 2:
The communication apparatuses are designed to perform multiple functions: they simultaneously handle communication tasks and sensing operations. Each apparatus acts as both a communication node and a sensing unit, capable of transmitting electromagnetic signals, receiving echoes, and processing sensing data. This multi-functionality allows the system to expand sensing coverage without adding dedicated sensing infrastructure.
2Reliability
If a single communication apparatus performs sensing in complex scenarios, then the device complexity is low, but the sensing reliability is poor due to obstacles blocking line of sight
Solution Approach 1:
Multiple communication apparatuses merge their sensing observations to overcome the limitations of individual apparatuses. When one apparatus is blocked by an obstacle, other apparatuses can provide alternative viewing angles and sensing data, enabling the system to maintain reliable sensing through collaborative fusion of multiple perspectives.
Solution Approach 2:
The patent introduces a coordination mechanism that acts as an intermediary between multiple sensing apparatuses. This mediator manages the collaboration by coordinating sensing operations, fusing data from multiple sources, and resolving conflicts or gaps in sensing information, thereby improving overall system reliability in complex environments.
3Measurement precision
If high frequency bands are used for sensing, then the sensing precision is improved, but the beam width becomes narrow making it difficult to cover the entire scene
Solution Approach 1:
Multiple communication apparatuses each use high frequency bands to achieve precise sensing in their local fields of view. The system then merges these high-precision measurements from multiple apparatuses to reconstruct a comprehensive view of the entire scene. This approach maintains the sensing precision benefits of high frequency while expanding coverage through spatial distribution of multiple apparatuses.
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 sensing coverage and accuracy by leveraging collaborative sensing among multiple apparatuses, correcting sensing results, and positioning targets through TDOA, thereby overcoming limitations of single apparatus sensing in complex environments.
Implementation Method 1
A basic principle of the radar is to transmit an electromagnetic wave signal to illuminate a target and receive an echo from the target
Implementation Method 2
utilizing TDOA positioning to improve sensing coverage and accuracy
Data Source
AI summary
A sensing method and an apparatus. The method includes: A first communication apparatus receives sensing collaboration mode information from a second communication apparatus, where the sensing collaboration mode information includes information about whether the second communication apparatus has a coherent signal processing capability (S201); the first communication apparatus sends a sensing data request to the second communication apparatus (S202); the first communication apparatus receives sensing data from the second communication apparatus (S203), where when the second communication apparatus has the coherent signal processing capability, the sensing data includes an echo signal received by the second 10 communication apparatus, or when the second communication apparatus does not have the coherent signal processing capability, the sensing data includes a sensing result of the second communication apparatus; and the first communication apparatus determines a sensing result of a to-be-sensed target based on the sensing data from the second communication apparatus (S204).