Cross-Frequency Sensing Proxy Frame Exchange for Data Fusion
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Solution Overview
Problem
Existing wireless local area network (WLAN) sensing technologies face challenges in cross-frequency band sensing by proxy, including lack of indication for sensing type and range in the start stage, and inability of devices to parse sensing measurement reports across different frequency bands.
Innovation Solution
A communication device is designed to transmit and receive frames that specify the sensing type and range, enabling cross-frequency band sensing by proxy, allowing devices to request and respond to sensing measurements across different frequency bands, including low-frequency and high-frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a device supports only a single frequency band for sensing, then the device complexity is reduced, but the adaptability and versatility of the sensing system deteriorates
Solution Approach 1:
The patent introduces a sensing proxy mechanism where a first device (supporting first frequency band) acts as an intermediary to perform sensing measurements on a second frequency band through coordinated interaction with a second device. This allows cross-frequency band sensing without requiring a single device to support all frequency bands, thus resolving the contradiction between adaptability and device complexity.
Solution Approach 2:
The sensing proxy initiator device is designed to perform multiple functions: it can both initiate sensing measurements and process sensing results from different frequency bands. The device supports receiving indication information from multiple frequency bands and fusing sensing results, making it a universal sensing platform that achieves cross-frequency band adaptability without requiring every device to support all frequency bands.
2Measurement precision
If sensing type and range indications are not provided in the start stage, then the frame structure simplicity is maintained, but the measurement precision and sensing accuracy deteriorates
Solution Approach 1:
The patent applies preliminary action by including sensing type and range indication information in the initial frame exchange (first frame or second frame) during the start stage of sensing. This allows the sensing parameters to be predetermined and agreed upon before actual measurements begin, ensuring measurement precision without adding complex real-time negotiation mechanisms during the sensing process.
Solution Approach 2:
The patent implements feedback by having the second device send indication information back to the first device about the supported frequency band and sensing parameters. This feedback mechanism allows the sensing system to automatically configure appropriate measurement parameters based on device capabilities, improving measurement precision while keeping the frame structure relatively simple through standardized feedback fields.
3Reliability
If sensing measurements are performed without fusing multi-frequency band data, then the processing speed is maintained, but the robustness and generalization of sensing models deteriorates
Solution Approach 1:
The patent applies merging by fusing sensing results from multiple frequency bands at the sensing proxy initiator device. The device receives sensing measurements from both first and second frequency bands and combines them to generate a comprehensive sensing result. This fusion approach improves the robustness and generalization of sensing models by leveraging complementary information from different frequency bands, while the automated fusion process maintains acceptable processing throughput.
Data Source
AI summary
Provided is a communication device. The communication device is a sensing by proxy initiator supporting a first frequency band and includes: a processor; and a memory, configured to store one or more executable instructions of the processor, wherein the processor is configured to load the one or more executable instructions to cause the communication device to: transmit a SBP Request frame to a sensing by proxy responder, wherein the SBP Request frame is used to request the sensing by proxy responder to perform sensing measurement of a second frequency band in a proxy mode and indicate at least one of a first sensing type or a first sensing range to the sensing by proxy responder; and receive an SBP Response frame from the sensing by proxy responder, wherein the sensing by proxy responder is a device that supports both the first frequency band and the second frequency band.