Sensing Node Determination via Position Feedback in Wireless Networks
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Solution Overview
Problem
In environment sensing based on wireless electromagnetic waves in cellular networks, determining appropriate sensing nodes for per-area sensing is challenging due to unknown device distribution within the target area.
Innovation Solution
A method where a first device receives a sensing request message with information of an Area of Interest (AOI) and transmits a feedback message based on its position information and the AOI information to assist in determining the sensing node participating in the sensing measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If passive sensing is performed for per-area sensing without knowing device distribution, then sensing coverage is achieved, but sensing node determination accuracy deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where the first device receives sensing request information from the second device, determines its own position relative to the area of interest, and feeds back position information to enable accurate sensing node determination. This feedback loop resolves the contradiction by providing the necessary position data that was initially unknown.
Solution Approach 2:
The patent performs preliminary position determination before final sensing node selection. The first device determines its position information in advance by receiving reference signal information and calculating position relative to the area of interest, ensuring accurate sensing node determination is possible before the sensing measurement actually occurs.
2Measurement precision
If position information feedback is implemented for sensing node determination, then sensing node determination accuracy is improved, but communication overhead increases
Solution Approach 1:
The patent extracts only the essential position information needed for sensing node determination from the overall communication process. Instead of transmitting complete device state information, only the relevant position data relative to the area of interest is fed back, minimizing communication overhead while maintaining determination accuracy.
3Reliability
If multiple first devices are involved in sensing measurement, then sensing reliability is improved, but device coordination complexity increases
Solution Approach 1:
The patent introduces the second device as an intermediary that coordinates the sensing measurement process. The second device receives sensing request information, transmits it to relevant first devices, and collects position information feedback, thereby simplifying the coordination complexity among multiple first devices while ensuring reliable sensing measurements.
Data Source
AI summary
Provided is a method for determining a sensing node. The method is applicable to a first device, and includes: receiving a sensing request message from a second device, the sensing request message including information of an AOI, wherein the AOI is an area to be measured in sensing measurement; and transmitting a feedback message to the second device based on position information of the first device and the information of the AOI, wherein the feedback message is for determining the sensing node participating in the sensing measurement.