Wireless LAN Proxy Sensing Frames for Accurate Low-Power WLAN Sensing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There is a need for a method and device to perform collaborative sensing in a wireless LAN system, particularly through Sensing by Proxy (SBP) capability, to enhance sensing precision and reduce power consumption.
Innovation Solution
The method involves a first station transmitting a frame to request a sensing by proxy procedure, receiving a response frame, and obtaining a sensing measurement report, while indicating participation in a sensing responder to responder sounding procedure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single station performs sensing procedure independently, then sensing precision can be maintained, but power consumption increases
Solution Approach 1:
The sensing procedure is segmented into multiple collaborative steps where different stations perform different functions. The first station initiates the sensing by proxy procedure and requests sensing measurements, while the second station performs the actual sensing measurements and reports results. This segmentation allows the first station to obtain sensing data without continuously performing measurements itself, thereby reducing its power consumption while maintaining sensing precision through the collaborative effort of multiple stations.
2Use of energy by moving object
If multiple stations perform collaborative sensing, then power consumption is reduced, but system complexity increases
Solution Approach 1:
The first station acts as an intermediary by initiating the sensing by proxy procedure and coordinating the sensing process. It sends a first frame to request sensing measurements from the second station, receives the measurements in a third frame, and processes the sensing results. This intermediary role simplifies the system architecture by having a designated coordinator rather than requiring all stations to equally participate in every sensing operation, thereby reducing overall system complexity while enabling collaborative sensing that lowers power consumption.
3Measurement precision
If sensing measurements are performed continuously, then sensing precision is maintained, but power consumption increases
Solution Approach 1:
The collaborative sensing procedure implements periodic sensing measurements rather than continuous measurements. The first station periodically sends requests for sensing measurements to the second station, which performs measurements at these periodic intervals and reports results. This periodic action maintains sensing precision by regularly updating channel information while significantly reducing power consumption compared to continuous measurements, as stations can enter low-power states between measurement periods.
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
A method and an apparatus for operating in a wireless LAN system are disclosed. The method performed by a first STA in a wireless LAN system, according to one embodiment of the present disclosure, comprises the steps of: transmitting, to a second STA, a first frame for requesting a sensing by proxy (SBP) procedure; receiving, from the second STA, a second frame responding to the first frame; and receiving, from the second STA, a third frame related to a sensing measurement report on the basis of the first frame, wherein the first frame can include first information related to a sensing responder to sensing responder (SR2SR) sounding procedure, and second information indicating whether the first STA participates in the SR2SR sounding procedure.