Wireless Sounding Signal Reporting for Rich-Scattering Sensing
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Solution Overview
Problem
Existing wireless sensing technologies lack an efficient and effective method for wireless sensing measurement and reporting, particularly in environments with rich-scattering conditions, as standardization efforts for IEEE 802.11bf and other protocols have not fully addressed how to perform these tasks.
Innovation Solution
A system and method for wireless sensing measurement and reporting involving a transmitter and receiver in a wireless data communication network, utilizing a time series of wireless sounding signals to perform sensing measurements and report results through the PHY or MAC layer, enabling higher layers to perform sensing-based tasks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wireless sensing measurement and reporting is implemented using existing standards like IEEE 802.11bf, then wireless sensing capability is provided, but the standardization is incomplete and measurement efficiency is insufficient
Solution Approach 1:
The patent segments the wireless sensing measurement process into distinct phases: measurement instance setup, sounding signal transmission, measurement execution, and result reporting. This segmentation allows each phase to be optimized independently and enables flexible configuration of measurement parameters without requiring complete standardization of all aspects.
Solution Approach 2:
The patent implements dynamic measurement configuration where the measurement instance can be triggered based on events or time schedules, and the sounding signals can be transmitted at flexible intervals. This dynamic approach allows the system to adapt to different sensing needs and environments, improving measurement efficiency without requiring rigid standardization.
2Measurement precision
If bandwidth is increased to access more multipaths in rich-scattering environments, then sensing capability is enhanced, but system complexity increases
Solution Approach 1:
The patent makes the wireless communication system serve multiple functions: both data communication and wireless sensing. The same wireless channel and devices are used for both purposes, eliminating the need for separate sensing hardware and reducing overall system complexity while maintaining enhanced sensing capability through bandwidth utilization.
Solution Approach 2:
The patent changes the bandwidth parameter to access more multipaths in rich-scattering environments, which enhances sensing precision. By adjusting this key parameter, the system can optimize the balance between measurement precision and the resulting system complexity.
3Reliability
If wireless sensing measurements are performed continuously to track human activities, then sensing coverage is improved, but energy consumption increases
Solution Approach 1:
The patent implements periodic sounding signal transmission instead of continuous measurement. The system can configure the transmission interval based on the specific sensing task requirements, achieving adequate sensing coverage while significantly reducing energy consumption compared to continuous operation.
Solution Approach 2:
The patent enables trigger-based measurement instances where the sensing system can automatically activate based on detected events or predefined conditions. This self-service mechanism allows the system to perform measurements only when necessary, optimizing the balance between sensing coverage and energy consumption without requiring external control.
Data Source
AI summary
Methods, apparatus and systems for wireless sensing are described. In one example, a described system in a wireless data communication network comprises: a transmitter configured to transmit a time series of at least one wireless sounding signal (WSS) based on a standard wireless network protocol associated with the wireless data communication network, and a receiver. The wireless data communication network comprises a physical (PHY) layer, a medium access control (MAC) layer, and at least one higher layer. The receiver is configured to: receive the time series of at least one WSS (TSWSS) based on the standard wireless network protocol through a wireless channel of a venue, and perform a plurality of wireless sensing measurements based on the received TSWSS to obtain sensing measurement results based on the standard wireless network protocol. The PHY layer or the MAC layer of the receiver provides the sensing measurement results locally to the at least one higher layer of the receiver based on the standard wireless network protocol. The sensing measurement results are available to the at least one higher layer of the receiver for performing a sensing-based task based on the sensing measurement results.