WLAN Sensing Measurement Reports Using Frequency Response Indicators
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communications, receiver gain variations in WLAN sensing measurements lead to inaccurate channel state information (CSI) due to uncalibrated and vendor-specific gain settings, affecting sensing performance, especially in noisy environments.
Innovation Solution
Proposed schemes indicate frequency response changes of the sensing receiver without revealing actual gain settings, using indicators like Rx_FR_Change, Rx_FR_Index, and FR_Report to enhance CSI accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If receiver gain settings are reported in sensing measurement report, then CSI accuracy can be improved, but device complexity and information security are worsened due to vendor-specific details and calibration requirements
Solution Approach 1:
The patent introduces frequency response indicators (Rx_FR_Index and Rx_FR_Change) as intermediary parameters that indirectly represent receiver gain effects without exposing actual gain settings. These indicators act as mediators between the receiver's internal state and the external reporting mechanism, allowing CSI accuracy improvement while maintaining vendor independence and information security.
Solution Approach 2:
The patent transforms the reporting parameter from direct gain values (which are vendor-specific and require calibration) to frequency response indicators (Rx_FR_Index categorizing frequency response characteristics and Rx_FR_Change indicating variations). This parameter transformation enables accurate CSI compensation while avoiding the complexity of vendor-specific gain settings.
2Reliability
If receiver gain variations are compensated, then sensing performance is improved, but information loss occurs due to inability to directly measure or compare gains from different vendors
Solution Approach 1:
The patent changes the reporting parameter from direct gain values (which cannot be compared across vendors) to frequency response indicators that capture the functional effect of gain settings. This allows reliable sensing performance through frequency response-based compensation while avoiding the need to transmit or compare actual gain values, thus preventing information loss.
Solution Approach 2:
The patent substitutes the direct gain measurement and reporting mechanism with a frequency response-based indication system. Instead of mechanically reporting gain values that require vendor-specific calibration, the system uses frequency response indicators that can be universally interpreted, maintaining sensing reliability without losing critical information.
3Measurement precision
If actual gain settings are revealed in measurement report, then CSI accuracy is improved, but ease of operation is worsened due to vendor confidentiality concerns
Solution Approach 1:
The patent uses frequency response indicators as intermediaries that convey the necessary information for CSI accuracy without revealing vendor-specific gain settings. This intermediary approach maintains vendor confidentiality while still enabling accurate sensing, as the indicators provide sufficient information for compensation without exposing proprietary details.
Solution Approach 2:
The patent extracts only the essential functional information (frequency response characteristics) from the receiver's internal state, separating it from the vendor-specific implementation details (actual gain settings). This extraction allows CSI accuracy improvement while preserving vendor confidentiality, as only the necessary operational information is reported.
Data Source
AI summary
Techniques pertaining to further indication for WLAN sensing measurement report in wireless communications are described. A sensing receiver is configured to perform a sensing measurement and generate a sensing measurement report indicating channel state information (CSI) according to the sensing measurement. The sensing measurement report further indicates one or more categories of a frequency response of the sensing receiver without indicating any gain setting of the sensing receiver. The sensing receiver is also configured to transmit, as a sensing responder, the sensing measurement report to a sensing initiator.