Wi-Fi Sensing Suspension Control for Interference-Accurate Measurement
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Solution Overview
Problem
Wi-Fi devices experience significant errors in sensing measurement results due to interference from co-channel, adjacent-channel, or blocking interference, leading to inaccurate sensing measurements.
Innovation Solution
A method and apparatus that utilize sensing suspend and resume indication information to manage sensing measurement instances, suspending them during interference and resuming when interference is minimal, thereby maintaining established sensing parameters and reducing signaling overheads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If Wi-Fi devices perform sensing measurement in the presence of interference, then sensing measurement can be continuously executed, but the sensing measurement result accuracy deteriorates due to co-channel interference, adjacent-channel interference, or blocking interference
Solution Approach 1:
The patent implements dynamic suspension and resumption of sensing measurement instances based on real-time interference detection. The initiator device monitors interference levels and dynamically adjusts the measurement state (suspend/resume) to adapt to changing channel conditions, thereby resolving the contradiction between continuous execution and measurement accuracy
Solution Approach 2:
The patent establishes a feedback mechanism where the initiator device detects interference during sensing measurement execution and sends suspension indication information back to the responder device. This feedback loop enables the system to respond to interference conditions and adjust measurement operations accordingly, maintaining accuracy while minimizing interruption
2Measurement precision
If a sensing measurement setup termination frame is sent to terminate sensing measurement setup when interference exists, then interference impact is avoided, but signaling overhead increases and sensing parameters are lost requiring reestablishment
Solution Approach 1:
The patent extracts the suspension function from the termination mechanism. Instead of using the sensing measurement setup termination frame (which would require complete reestablishment), the patent introduces a dedicated suspension indication that selectively pauses measurement execution while preserving the established sensing parameters and measurement setup configuration
Solution Approach 2:
The patent enables temporary discarding of measurement execution (suspension) while retaining the measurement setup parameters. When interference conditions clear, the system can recover and resume the original measurement configuration without the signaling overhead of complete reestablishment, thus discarding only the problematic execution phase while keeping the valuable setup information
Data Source
AI summary
A sensing communication method and apparatus may be applied to a sensing (sensing) system supporting the IEEE.802.11bf protocol; or applied to a wireless local area network system supporting 802.11 series protocols such as a next-generation Wi-Fi protocol of IEEE 802.11ax like 802.11be, Wi-Fi 7, or EHT, and a next generation of 802.11be like Wi-Fi 8, UHR, and Wi-Fi AI; or applied to a wireless personal area network system that is based on ultra-wideband UWB. The method includes: a first communication apparatus generates sensing suspend indication information and then sends the sensing suspend indication information; and correspondingly, a second communication apparatus receives the sensing suspend indication information and suspends execution of a sensing measurement instance based on the sensing suspend indication information. The method effectively improves accuracy of a sensing measurement result.