WLAN Sensing Trigger Frames for Threshold-Based CSI Reporting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless LAN systems lack efficient methods for performing threshold-based sensing measurement reporting and transmitting/receiving threshold-based reporting trigger frames to request sensing measurement results.
Innovation Solution
A method and device for performing threshold-based sensing measurement reporting in a wireless LAN system, involving the transmission and reception of a threshold-based reporting trigger frame to request and report sensing measurement results, using channel state information (CSI) variation values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing wireless LAN systems perform sensing measurement reporting, then sensing capability is provided, but the system lacks efficient threshold-based reporting methods and procedures
Solution Approach 1:
The patent applies universality by reusing the existing trigger frame structure for sensing measurement reporting. The trigger frame can indicate different reporting types (full reporting or threshold-based reporting) through a single field configuration, eliminating the need for separate frame types and procedures for each reporting method.
Solution Approach 2:
The patent changes the parameter configuration in the trigger frame by introducing a sensing trigger subtype field that can indicate different reporting modes. This parameter change enables the system to switch between full reporting and threshold-based reporting without requiring new physical layer procedures or frame formats.
2Measurement precision
If new procedures are defined for threshold-based sensing measurement reporting, then reporting precision is improved, but system complexity increases
Solution Approach 1:
The patent applies self-service by enabling the receiving station to autonomously determine whether to perform full reporting or threshold-based reporting based on the sensing trigger subtype field in the trigger frame. The station independently processes the reporting based on the indicated type without requiring complex coordination or new procedural protocols.
Solution Approach 2:
The patent extracts the threshold-based reporting functionality from a potential new procedure and integrates it into the existing trigger frame structure. By taking out the reporting type indication and embedding it in the trigger frame, the system achieves precise threshold-based reporting without requiring separate procedural definitions.
3Object-affected harmful factors
If existing frequency bands are used for sensing, then privacy infringement is reduced, but sensing precision is limited compared to higher frequency ranges
Solution Approach 1:
The patent applies dynamics by enabling flexible reporting configurations where the system can adapt between different reporting granularities. The threshold-based reporting allows dynamic adjustment of reporting frequency and detail level, optimizing the balance between processing overhead and sensing precision based on actual needs.
Solution Approach 2:
The patent applies partial action by implementing threshold-based reporting where only sensing measurements exceeding a predetermined threshold are reported. This partial reporting approach reduces unnecessary data transmission and processing while maintaining sufficient precision for practical sensing applications, avoiding the excessive action of reporting all measurements regardless of significance.
Data Source
AI summary
Disclosed are a method and device for operation in a wireless LAN system. The method performed by a first STA in a wireless LAN system according to an embodiment disclosed herein may comprise the steps of: receiving a first sensing trigger frame including a sensing trigger subtype field from a second STA; and transmitting a first feedback frame, related to a first NDP received from the second STA, to the second STA on the basis of the first sensing trigger frame, wherein the first feedback frame includes a CSI variation value on the basis that a sensing threshold-based report is instructed by the sensing trigger subtype field, and the first feedback frame includes CSI based on the first NPD on the basis that a sensing report is instructed by the sensing trigger subtype field.