Radio Wave Environment Analysis Device Simulation Optimization

Solution Overview

Problem

The existing radio wave environment simulation methods, such as those using the ray tracing method, face a significant computational load when simulating a target area with a moving body, leading to an enormous number of calculations and prolonged analysis times.

Innovation Solution

A radio wave environment analyzer that calculates and compares reception intensities at specific locations within a target area, selecting only the most impactful locations for a detailed simulation based on predefined thresholds, thereby reducing the overall number of calculations required.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If a detailed simulation is executed at all possible movement locations of moving bodies, then the accuracy of radio wave environment analysis is improved, but the computational load and analysis time increase enormously

Engineering Contradiction:

Improveaccuracy of radio wave environment analysisVSAvoidanalysis time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The system performs preliminary calculations of reception intensities at all movement locations before executing detailed simulations. Based on these preliminary results, it identifies and selects only the candidate locations that have significant impact on the radio wave environment, thereby avoiding unnecessary detailed simulations at locations with minimal impact and reducing overall analysis time while maintaining accuracy

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system extracts and identifies specific candidate locations from the set of all movement locations based on reception intensity thresholds and impact criteria. By separating the locations that require detailed simulation from those that do not, the system reduces the computational burden while focusing resources on the most impactful areas

Inventive Principle:

Principle #2Taking out (Extraction)

2Measurement precision

If a detailed simulation is executed at all possible movement locations of moving bodies, then the accuracy of radio wave environment analysis is improved, but the computational load increases enormously

Engineering Contradiction:

Improveaccuracy of radio wave environment analysisVSAvoidcomputational load

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The system performs preliminary calculations of reception intensities at all movement locations before executing detailed simulations. Based on these preliminary results, it identifies and selects only the candidate locations that have significant impact on the radio wave environment, thereby avoiding unnecessary detailed simulations at locations with minimal impact and reducing overall computational load while maintaining accuracy

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

Instead of performing detailed simulations at all movement locations, the system performs partial simulations only at selected candidate locations that meet specific criteria. This partial action approach reduces computational load significantly while still providing sufficient accuracy for the radio wave environment analysis

Inventive Principle:

Principle #16Partial or excessive action

3Adaptability or versatility

If the number of simulation points is increased to account for multiple moving bodies, then the comprehensiveness of the analysis is improved, but the complexity of the simulation process increases

Engineering Contradiction:

Improvecomprehensiveness of analysisVSAvoidsimulation process complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system segments the simulation process into two distinct stages: a preliminary calculation stage that evaluates all movement locations, and a detailed simulation stage that focuses only on selected candidate locations. This segmentation reduces the complexity of the overall process by breaking it down into manageable steps with clear criteria for progression

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system performs preliminary calculations to identify candidate locations before executing detailed simulations. This preliminary action establishes clear selection criteria and reduces the number of points requiring complex simulation, thereby reducing overall process complexity while maintaining comprehensiveness

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS11937104B2Radio wave environment analysis device and radio wave environment analysis method

Publication Date: 2024.03.19 PANASONIC HOLDINGS CORP

AI summary

A radio wave environment analyzer includes a memory that holds location information on a radio transmitter disposed in a target area where a moving body is present and location information on a reference point at which a radio wave from the radio transmitter is received, and a processor that obtains (i) a first reception intensity of the radio wave at the reference point when the moving body is present at an initial location and (ii) a plurality of second reception intensities of the radio wave at the reference point respectively corresponding to cases where the moving body is present at a plurality of movement locations. The processor selects one or more locations out of the plurality of movement locations to execute a simulation of a radio wave environment in the target area, based on the first reception intensity and the plurality of second reception intensities.