Building Vector Data Map RF Parameter Estimation
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Solution Overview
Problem
Current systems face challenges in providing accurate radio frequency (RF) parameters at interaction points in building vector data maps (BVDMs), particularly where multipath components are reflected, diffracted, or transmitted, limiting their accuracy for applications like ray tracing and handover decisions in 5G NR networks.
Innovation Solution
An apparatus and method that access channel state information measurements, compare multipath component parameters with simulated parameters, identify corresponding interaction points, and estimate RF parameters, including phase shifts, reflection, and diffraction coefficients, to enhance the accuracy of BVDMs by updating them with object-specific RF characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If building vector data maps are generated from digital map data, LIDAR data, or radar data, then the geometric structure is established, but accurate RF parameters at interaction points cannot be provided
Solution Approach 1:
The patent uses multipath component parameters as an intermediary to bridge the gap between geometric data maps and RF parameters. By comparing multipath components from channel state information measurements with those from radio channel simulations, the system indirectly derives RF parameters at interaction points without direct measurement, thus resolving the information loss problem.
Solution Approach 2:
The patent replaces direct physical measurement of RF parameters with a computational approach using multipath component analysis. Instead of directly measuring RF characteristics at interaction points, the system substitutes this with comparing multipath parameters from measurements and simulations, thereby obtaining RF parameters through signal processing rather than direct physical measurement.
2Reliability
If multipath component parameters are compared between measurements and simulations, then corresponding interaction points can be identified, but the process requires complex data processing
Solution Approach 1:
The patent segments the complex task of RF parameter estimation into distinct steps: first comparing multipath component parameters to identify corresponding components, then mapping these to interaction points, and finally estimating RF parameters. This segmentation reduces the overall complexity by breaking down the problem into manageable sub-tasks that can be processed sequentially.
Solution Approach 2:
The patent performs preliminary comparison and matching of multipath component parameters before the actual RF parameter estimation. By pre-identifying corresponding multipath components and their interaction points, the system prepares the necessary mappings in advance, which simplifies the subsequent RF parameter estimation process and improves reliability.
Data Source
AI summary
Devices, methods and computer programs for enhancing a data map of objects via object specific radio frequency parameters are disclosed. Channel state information measurements for a surrounding of a network node and a corresponding radio channel simulation are accessed. A set of radio frequency parameters for each interaction point is estimated.