SBP Radio Frame Signaling for Multi-Responder WLAN Sensing
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Solution Overview
Problem
In WLAN sensing procedures, station devices (STAs) lack the capability to communicate with multiple responders simultaneously, leading to inefficient spectrum resource utilization and increased latency, particularly in scenarios requiring low latency communication.
Innovation Solution
Implementing a mechanism for sensing by proxy (SBP) where an access point (AP) serves as a proxy for STAs, using radio frames with identification bits to instruct responders on whether to feed back sensing measurement results, thereby optimizing the SBP procedure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If STA acts as sensing initiator to communicate with multiple responders simultaneously, then spectrum resource utilization is improved, but device complexity increases beyond STA capability
Solution Approach 1:
The patent introduces an AP as an intermediary device to perform sensing measurements on behalf of multiple STAs. The AP receives sensing measurement setup requests from STAs, conducts the actual sensing measurements with responders, and feeds back results to STAs. This mediator approach enables multiple simultaneous sensing operations without requiring complex multi-response handling capabilities in STA devices.
2Device complexity
If STA communicates one-to-one with single responder, then device complexity is reduced, but latency increases and spectrum resources are wasted
Solution Approach 1:
The AP serves as a centralized coordinator that can simultaneously manage multiple sensing measurements with different responders. By consolidating the sensing initiation and measurement execution functions at the AP, the system achieves parallel processing of multiple sensing operations, significantly reducing overall sensing latency compared to sequential one-to-one STA-responder communications.
3Productivity
If AP serves as proxy for STA to perform sensing measurement, then productivity is improved, but mechanism complexity for feedback increases
Solution Approach 1:
The patent establishes a structured feedback mechanism where the AP feeds back sensing measurement results to STAs through defined message exchanges. The feedback includes measurement results, status information, and control parameters. This standardized feedback protocol manages the complexity of multi-responder scenarios by providing a unified interface for result delivery, eliminating the need for individual feedback mechanisms for each responder-STA pair.
Data Source
AI summary
A communication method, performed by an SBP initiator, includes: determining a target radio frame, wherein the target radio frame comprises a first identification bit, and the first identification bit indicates whether an SBP responder feeds back sensing measurement results; and transmitting the target radio frame.