WLAN Sensing Measurement Feedback Frame Structure
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Solution Overview
Problem
Current wireless local area network (WLAN) systems face challenges in performing accurate sensing measurements and efficiently transmitting and receiving feedback information for channel state information (CSI) in next-generation wireless LAN systems.
Innovation Solution
A method and device for performing sensing measurements in a WLAN system, which involves a first station (STA) receiving a null data physical protocol data unit (PPDU) announcement frame and NDP from a second STA, and then transmitting a sensing measurement report frame including a sensing measurement report field. The report frame includes subfields such as measurement setup ID, measurement instance ID, and the number of bits for each CSI value.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensing measurement procedures are performed in WLAN systems, then sensing precision is improved, but device complexity increases
Solution Approach 1:
The patent segments the sensing measurement process into distinct phases: NDP announcement frame transmission, NDP transmission, and sensing measurement report frame transmission. Each phase handles specific signaling tasks, dividing the complex sensing procedure into manageable, standardized components that reduce overall system complexity while maintaining measurement precision
Solution Approach 2:
The patent introduces standardized frame structures (NDP announcement frame, sensing measurement report frame) as intermediaries to facilitate sensing measurements. These frames carry necessary control information and measurement results in a standardized format, enabling precise sensing measurements while simplifying the interaction between devices through well-defined protocols
2Productivity
If feedback information for channel state information is transmitted, then sensing measurement efficiency is improved, but information loss increases
Solution Approach 1:
The patent implements a feedback mechanism where the receiving device transmits a sensing measurement report frame containing channel state information back to the transmitting device. This feedback loop enables the system to adapt to channel conditions and improve sensing measurement efficiency while maintaining information integrity through standardized feedback formats
Solution Approach 2:
The patent utilizes parameter changes in the sensing measurement report frame to efficiently convey channel state information. By encoding feedback information in standardized parameters within the frame structure, the system achieves efficient information transmission while minimizing information loss through optimized data representation
Data Source
AI summary
A method and a device for performing sensing measurement in a wireless LAN system are disclosed. The method for performing sensing measurement in a wireless LAN system, according to one embodiment of the present disclosure, comprises the steps of: receiving a null data physical protocol data unit (PPDU) (NDP) announcement frame from a second STA; receiving an NDP from the second STA on the basis of the NDP announcement frame; and transmitting, to the second STA, on the basis of the NDP, a sensing measurement report frame including a sensing measurement report field, wherein the sensing measurement report frame can include a measurement setup ID subfield, a measurement instance ID subfield, and a first subfield representing the number of bits for each channel state information (CSI) value.