SBP Report Framing for Oversized WLAN Sensing Results
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Solution Overview
Problem
In WLAN sensing technology, there is a challenge in determining how an access point (AP) proxy sends sensing measurement results to a station device (STA) when the results exceed a preset length, as STAs can only communicate one-to-one and lack the capability to communicate with multiple devices simultaneously.
Innovation Solution
The proposed solution involves an SBP (Sensing By Proxy) method where an SBP responding device determines a first SBP report frame that indicates when the aggregated media access control protocol data unit (A-MPDU) frame exceeds a preset length, and sends partial results with identification information, followed by additional frames if necessary, to ensure all results are transmitted efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If all sensing measurement results are transmitted in a single A-MPDU frame, then complete data delivery is achieved, but the frame length exceeds the preset maximum length limit
Solution Approach 1:
The patent divides the sensing measurement results into multiple A-MPDU frames when the total data exceeds the maximum frame length. Each frame is transmitted separately with proper sequencing, ensuring complete data delivery while adhering to the frame length constraint. This segmentation resolves the contradiction by transmitting all measurement results without creating overly long frames.
2Length of moving object
If sensing measurement results are divided into multiple frames, then frame length constraint is satisfied, but additional framing overhead and transmission complexity increase
Solution Approach 1:
The patent incorporates indication information in advance within each A-MPDU frame to signal whether more measurement results will follow. This preliminary indication allows the receiving device to prepare for subsequent frames or determine when transmission is complete, reducing the need for complex error handling and retransmission protocols.
3Reliability
If indication information is added to each frame, then frame completeness and sequencing are improved, but frame size and processing overhead increase
Solution Approach 1:
The indication information is embedded locally within each A-MPDU frame at a specific field position, providing necessary reliability information only where needed. This localized approach ensures that each frame can be independently processed and validated without requiring additional separate control messages, minimizing the overall overhead while maintaining transmission reliability.
Data Source
AI summary
A communication method and apparatus, a device, and a storage medium, which can be applied to a sensing by proxy (SBP) responding device. The method includes: determining a first SBP report frame, wherein in the case where a length of an aggregated media access control (MAC) protocol data unit (A-MPDU) frame, which is determined according to all sensing measurement results of wireless local area network (WLAN) sensing measurement, exceeds a preset length, the first SBP report frame indicates, by means of first indication information, that the first SBP report frame includes some of the sensing measurement results of the WLAN sensing measurement; and sending the first SBP report frame.