DMG Sensing Communication With Notification Frames for Timing Alignment
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Solution Overview
Problem
In directional multi-gigabit (DMG) sensing, the SBP initiator cannot accurately determine the timing of sensing measurements due to mismatched or unaligned time information between the DMG SBP initiator and responder, leading to inefficient and inaccurate feedback of sensing measurement results.
Innovation Solution
A communication method where the first device sends a frame to notify the second device to prepare for sensing measurement, ensuring it remains in a wake-up or active state, allowing timely receipt of the measurement results, and includes mechanisms for preprocessing and synchronization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the SBP responder is a non-AP STA without centralized control capability, then the system achieves greater flexibility and autonomy, but the time alignment between SBP initiator and responder deteriorates, causing inaccurate determination of sensing measurement timing
Solution Approach 1:
The patent implements a feedback mechanism where the SBP initiator sends a first frame containing a first message to notify the SBP responder to prepare for receiving sensing measurement results. This feedback loop enables the initiator to track the responder's state and ensure proper timing alignment without requiring centralized control, resolving the contradiction between flexibility and timing accuracy.
Solution Approach 2:
The patent applies preliminary action by having the SBP initiator notify the SBP responder in advance to prepare for receiving sensing measurement results. The first frame sent before sensing measurement ensures the responder is in the correct state (wake-up or active) to receive results accurately, enabling timing accuracy in distributed configurations.
2Device complexity
If the SBP initiator does not accurately determine the timing of sensing measurements, then the system simplifies timing coordination, but the feedback efficiency of sensing measurement results deteriorates
Solution Approach 1:
The patent uses feedback to solve this contradiction by implementing a notification mechanism where the SBP initiator sends a first frame to the SBP responder before sensing measurement. This feedback loop enables the initiator to accurately track timing information and ensure the responder is prepared to receive results, thereby improving feedback efficiency without significantly increasing coordination complexity.
Solution Approach 2:
The patent applies preliminary action by having the SBP initiator send notification frames in advance to establish timing alignment before sensing measurement occurs. This ensures the responder is in the correct state to receive results, improving feedback efficiency while keeping the mechanism relatively simple compared to centralized AP coordination.
3Measurement precision
If the SBP initiator uses centralized scheduling by an AP, then timing alignment is improved, but the system loses flexibility in peer-to-peer sensing configurations
Solution Approach 1:
The patent implements self-service by enabling the SBP initiator to autonomously manage timing alignment and coordinate sensing measurements with the SBP responder without requiring AP intervention. The initiator sends notification frames and tracks timing information independently, achieving timing alignment in peer-to-peer configurations while maintaining flexibility and autonomy.
Solution Approach 2:
The patent uses feedback mechanisms where the SBP initiator sends notification frames to the SBP responder to establish timing alignment autonomously. This feedback loop enables the initiator to coordinate sensing measurements without centralized control, maintaining both timing precision and system flexibility in distributed configurations.
Data Source
AI summary
This application relates to the communication field, and in particular, to example communication methods, apparatuses, and computer-readable storage mediums, and can be applicable to a sensing system as well as systems that comply with the IEEE 802.11 system standard, for example, 802.11bf, 802.11a/b/g, 802.11n, 802.11ac, 802.11ax, or a next-generation standard thereof, for example, 802.11be or a further next-generation standard, a wireless personal local area network system based on ultra-wideband UWB, or the like. One example method includes a first device sending a first frame to a second device, where the first frame includes a first message, and the first message is used to notify the second device to prepare to receive a sensing measurement result. The first device then obtains the_sensing measurement result.