Radio Wave Map Interpolation for Autonomous Mobile Robots
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Solution Overview
Problem
In the context of mobile edge computing and autonomous mobile robots (AMRs) in factories and distribution centers, existing wireless communication techniques face challenges in generating accurate radio wave maps due to missing data, especially in environments with multiple propagation paths, which affects the AMRs' ability to navigate optimally.
Innovation Solution
An electronic apparatus with a processor that acquires and processes propagation path information and terminal data to generate and interpolate radio wave maps, adapting the interpolation method based on the propagation path status, including using different resolution levels and reliability indices to ensure accurate route selection for AMRs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If data interpolation is performed on radio wave maps with missing data, then the completeness of the radio wave map is improved, but the accuracy of the interpolated data deteriorates
Solution Approach 1:
The patent changes the parameter of interpolation resolution dynamically. When missing data is detected in a region, the system performs interpolation at a first (coarser) resolution to maintain accuracy, while in regions with complete data, it uses a second (finer) resolution to maximize detail. This parameter adaptation resolves the contradiction by adjusting the interpolation granularity based on data availability.
Solution Approach 2:
The patent applies different interpolation resolutions to different regions of the radio wave map based on local data conditions. Regions with missing data receive interpolation at one resolution level, while regions with complete data maintain higher resolution. This local differentiation allows the system to maintain overall map completeness while preserving accuracy in data-rich areas.
2Device complexity
If a single resolution is used for the entire radio wave map, then the device complexity is reduced, but the adaptability to different propagation path conditions deteriorates
Solution Approach 1:
The patent introduces dynamic resolution adjustment based on propagation path conditions. The system detects the presence of multiple propagation paths and adapts the interpolation resolution accordingly - using finer resolution in areas with complex propagation and coarser resolution in areas with simple propagation. This dynamic adaptation improves versatility without requiring a completely complex multi-resolution system.
Solution Approach 2:
The patent segments the radio wave map into regions with different propagation characteristics and applies appropriate resolution to each segment. By dividing the map based on propagation path analysis, the system achieves adaptability to different conditions while managing complexity through localized processing rather than global complexity.
3Measurement precision
If high resolution interpolation is applied throughout the radio wave map, then the accuracy of route selection is improved, but the processing time and computational resources increase
Solution Approach 1:
The patent applies high-resolution interpolation only partially - specifically in regions where it is most needed for accurate route selection, such as areas with complex propagation paths or near the AMR's intended route. Other regions use lower resolution, reducing overall processing time while maintaining sufficient accuracy for navigation purposes.
Solution Approach 2:
The patent dynamically changes the resolution parameter based on the importance and characteristics of different map regions. By adjusting resolution according to propagation conditions and route relevance, the system optimizes the balance between accuracy and processing efficiency, avoiding uniform high-resolution processing throughout the entire map.
Data Source
AI summary
According to one embodiment, an electronic apparatus includes a processor. The processor generates data of a missing part on a radio wave map to which data relating to received power of a radio signal at points in a predetermined geographical range is mapped based on a status of a propagation path between a first wireless device configured to travel in the predetermined geographical range and a second wireless device configured to form a wireless communication area including the predetermined geographical range.