Wi-Fi Sensing Configuration With Low-Overhead Solicitation and Beamforming
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Solution Overview
Problem
Existing Wi-Fi sensing systems impose significant overheads and impact performance due to inefficient solicitation of remote device transmissions, lack of flexibility in control, and non-optimal antenna beamforming for sensing requirements.
Innovation Solution
A system and method for configuring Wi-Fi systems to perform Wi-Fi sensing by optimizing remote device transmissions through improved MAC layer protocols, flexible solicitation mechanisms, and beamforming techniques that minimize overheads and maintain performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If Wi-Fi sensing systems use traditional solicitation methods for remote device transmissions, then sensing functionality is achieved, but system overhead increases and performance deteriorates
Solution Approach 1:
The patent implements preliminary configuration where the access point pre-configures remote devices with sensing parameters, transmission capabilities, and resource allocations before actual sensing transmissions occur. This preliminary setup includes defining measurement campaigns, configuring null data packets (NDPs), and establishing beamforming parameters in advance, which reduces runtime overhead and improves sensing efficiency
Solution Approach 2:
The patent introduces dynamic configuration mechanisms where sensing parameters, transmission resources, and beamforming settings are adaptively adjusted based on real-time channel conditions, device capabilities, and sensing requirements. The system dynamically modifies measurement campaigns and transmission parameters to optimize performance while minimizing overhead
2Ease of operation
If Wi-Fi sensing systems use fixed solicitation mechanisms, then implementation simplicity is maintained, but flexibility in control is reduced
Solution Approach 1:
The patent implements dynamic configuration where sensing parameters, transmission resources, and measurement campaigns are adaptively adjusted based on real-time conditions. The system allows flexible modification of sensing configurations while maintaining standardized protocols, enabling both ease of implementation and adaptability to different sensing scenarios
Solution Approach 2:
The patent enables flexible control by allowing dynamic modification of sensing parameters such as measurement intervals, transmission power, beamforming weights, and resource allocations. These parameter changes are made through standardized configuration messages that maintain implementation simplicity while providing extensive control flexibility
3Ease of manufacture
If traditional antenna beamforming is used for Wi-Fi sensing, then existing hardware is utilized, but sensing optimization is insufficient
Solution Approach 1:
The patent optimizes antenna beamforming for sensing by dynamically adjusting beamforming parameters such as weights, phases, and amplitudes based on sensing requirements rather than communication requirements. The system configures specific beamforming patterns that enhance sensing precision while utilizing existing hardware capabilities, achieving sensing optimization without requiring new hardware
4Measurement precision
If Wi-Fi sensing transmissions are frequently solicited, then sensing accuracy is improved, but impact on Wi-Fi system performance increases
Solution Approach 1:
The patent implements periodic measurement campaigns where sensing transmissions are scheduled at optimized intervals rather than continuously solicited. The system determines appropriate measurement periods based on sensing requirements, channel conditions, and network load, achieving sensing accuracy while minimizing impact on Wi-Fi communication performance through periodic rather than continuous sensing operations
Solution Approach 2:
The patent dynamically adjusts the frequency and timing of sensing transmissions based on real-time conditions including network load, channel stability, and sensing requirements. When channel conditions are stable or network load is high, sensing transmissions are reduced in frequency, maintaining accuracy while minimizing performance impact
Data Source
AI summary
Systems and methods for Wi-Fi sensing are provided. Wi-Fi sensing systems include sensing devices and remote devices configured to communicate through radio-frequency signals. Sensing devices and remote devices are configured to communicate with one another to establish sensing transmission configurations through established protocols. Sensing devices described herein are configured to provide Wi-Fi sensing measurements based on the reception of messages transmitted from remote devices according to established configurations.