Measurement Data Histograms and Waterfalls for Interference Detection
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Solution Overview
Problem
Existing methods for processing measurement data, such as max-hold detection and persistent waterfall diagrams, fail to provide historical information, making it difficult to identify interference and perform real-time comparisons between multiple antennas/receivers for time alignment and base-station position estimation.
Innovation Solution
A combination of a persistent waterfall diagram with time storage and two-dimensional histograms is used to derive historical information, allowing for real-time interference identification and comparison by associating waterfall lines with individual histograms, which store past measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If persistent waterfall diagrams are used to display historical measurement data, then historical information is provided, but interference detection and comparison between multiple antennas becomes difficult
Solution Approach 1:
The patent segments the continuous measurement data into discrete time windows, creating separate spectral representations for each window. This segmentation allows historical data to be preserved in individual time-window spectra while enabling clear comparison between different time periods and multiple antennas, as each segment can be independently analyzed and visualized without overlapping confusion.
Solution Approach 2:
The patent introduces an additional time dimension by displaying multiple spectral snapshots side-by-side or in sequence, rather than overlaying them. This dimensional transformation from 2D spectral plots to 3D time-frequency-energy representations enables simultaneous visualization of historical data and current measurements, making interference detection and antenna comparison more straightforward.
2Loss of information
If measurement traces are superimposed on top of each other in waterfall diagrams, then historical data is visualized, but real-time comparison between multiple antennas/receivers becomes difficult
Solution Approach 1:
The patent divides the measurement data from multiple antennas into separate time-window segments, with each antenna's data processed independently. This segmentation enables clear distinction between different antenna signals while preserving their historical trajectories, allowing operators to easily compare real-time performance across multiple antennas without visual confusion from superimposition.
Solution Approach 2:
The patent creates separate visual copies of spectral data for each antenna and time window, displaying them in distinct regions or layers. This copying approach preserves the complete measurement history for each antenna while enabling straightforward comparison, as each antenna's performance can be examined in its own dedicated visualization space without overlapping traces.
3Ease of operation
If max-hold detection is used to display maximum and minimum values, then current measurements are shown, but no historical information about measurements is provided
Solution Approach 1:
The patent performs preliminary spectral analysis on each time window before display, pre-processing the measurement data to extract key spectral characteristics. This preliminary action preserves historical spectral information in an organized manner, allowing current measurements to be displayed clearly while simultaneously maintaining access to the complete measurement history for later analysis and comparison.
Solution Approach 2:
The patent transforms the 1D time-series measurement data into 2D spectral snapshots across multiple time windows, adding a frequency dimension to the visualization. This dimensional transformation preserves historical measurement information in the spectral domain while enabling clear display of current measurements, as the historical data is stored as separate spectral representations rather than overlapping time-domain traces.
Data Source
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AI summary
The invention concerns a method of processing measurement data, wherein the method comprises the steps of: - Gathering measurement data by means of a measurement component (12), - Processing the measurement data by means of the measurement component (12), thereby producing at least one two-dimensional histogram (HM) of a measurement quantity depending on a variable for at least one period of time, - Forwarding, by means of the measurement component (12), the at least one two-dimensional histogram (HM) to a processing component (14), and - Processing, by means of the processing component (14), the at least one two-dimensional histogram (HM) received from the measurement component (12), thereby generating data associated with at least one histogram (HP) and data associated with a waterfall diagram (WD) having several waterfall lines (L), wherein each of the several waterfall lines (L) is associated with an individual histogram. Further, the invention concerns a system (10) for processing measurement data.