WLAN Sensing Trigger Frame for Delayed Feedback Control
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Solution Overview
Problem
Current WLAN sensing technologies lack a comprehensive mechanism for implementing feedback, particularly in delayed feedback scenarios, which is essential for accurate and efficient WLAN sensing measurements.
Innovation Solution
The proposed communication method and device include transmitting an NDPA frame to acquire a WLAN sensing channel, followed by an NDP frame for performing the measurement, and a trigger frame to indicate feedback of the measurement result, which is configured to trigger delayed transmission and includes information associated with the feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If immediate feedback mechanism is used in WLAN sensing, then measurement results can be reported quickly, but it lacks flexibility for delayed feedback scenarios and increases time loss in certain applications
Solution Approach 1:
The patent implements a dynamic feedback mechanism where the feedback timing is not fixed but can be adjusted based on application requirements. The initiator can request immediate feedback or delayed feedback by setting different values in the feedback indicator field of the trigger frame, allowing the system to adapt between immediate and delayed reporting modes as needed.
Solution Approach 2:
The patent changes the feedback timing parameter through the trigger frame mechanism. By modifying the feedback indicator field in the trigger frame, the system can switch between different feedback timing modes (immediate or delayed), effectively using parameter changes to resolve the contradiction between speed and flexibility.
2Reliability
If a comprehensive feedback mechanism is implemented for delayed feedback scenarios, then adaptability and reliability are improved, but device complexity increases
Solution Approach 1:
The patent makes the existing trigger frame mechanism multi-functional by adding a feedback indicator field that can indicate different feedback modes (immediate or delayed). This universal approach allows the same frame structure to handle both immediate and delayed feedback scenarios, improving reliability without significantly increasing device complexity.
Solution Approach 2:
The patent introduces a structured feedback mechanism where the initiator explicitly requests feedback timing through the trigger frame's feedback indicator field, and the responder complies by reporting measurement results according to the indicated timing. This formalized feedback loop improves reliability while maintaining manageable complexity through standardized procedures.
3Adaptability or versatility
If delayed feedback is implemented with trigger frames, then feedback flexibility is improved, but the complexity of frame structure and information management increases
Solution Approach 1:
The patent segments the feedback control into a specific feedback indicator field within the trigger frame structure. By isolating the feedback timing control into a dedicated field rather than dispersing it throughout the frame, the system achieves flexibility in feedback timing while keeping the frame structure organized and manageable.
Data Source
AI summary
A communication method is provided. The method includes: transmitting an NDPA frame for acquiring a WLAN sensing channel; transmitting an NDP frame for performing a WLAN sensing measurement; transmitting a trigger frame for indicating feedback of a WLAN sensing measurement result, the trigger frame being configured to trigger delayed transmission of a feedback result and comprises information associated with the feedback; and receiving a WLAN sensing measurement result.