Radio Wave Map Updating for Vehicle Blockage Prediction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional techniques fail to accurately predict communication quality deterioration due to movable blockers in wireless communication paths, especially in vehicles, which affects 5G communication quality.
Innovation Solution
A radio wave map update device and method that includes storing reference position information, blockage information, and communication quality data, receiving real-time communication quality data from vehicles, and updating the map to predict and manage blockages caused by movable blockers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional techniques are used to predict communication quality, then the system is simple, but the prediction accuracy deteriorates due to inability to handle movable blockers
Solution Approach 1:
The system performs preliminary actions by collecting and storing reference communication quality information before actual communication occurs. The radio wave map is pre-built with reference position information, reference blockage information, and reference communication quality information, allowing accurate prediction when actual communication takes place without requiring complex real-time analysis
Solution Approach 2:
The system creates a copy of the radio wave map that contains reference communication quality information representing various blockage situations. This copied reference data is then compared with actual communication measurements to determine prediction results, avoiding the need for complex real-time modeling while maintaining high prediction accuracy
2Measurement precision
If real-time communication quality data is collected from multiple vehicles, then the radio wave map accuracy improves, but the data processing load increases
Solution Approach 1:
The vehicles themselves perform the data collection and transmission functions without requiring external processing resources. Each vehicle's communication quality measurement unit automatically collects data and transmits it to the server, allowing the system to improve map accuracy through distributed self-service data gathering rather than centralized processing
Solution Approach 2:
The system establishes a feedback loop where actual communication quality data from vehicles is continuously fed back to update the radio wave map. This feedback mechanism allows the reference communication quality information to be progressively refined with real-world measurements, improving accuracy over time without requiring complex processing
Data Source
AI summary
A radio wave map update device includes a storage unit, a receiving unit, and an update unit. The storage unit is configured to store a radio wave map that contains reference position information indicating a reference position, reference blockage information indicating a reference blockage situation of a communication with a first base station at the reference position, and reference communication quality information of a communication with the first base station or a second base station under the reference blockage situation at the reference position. The receiving unit is configured to receive communication quality information of the communication between a probe information transmitter mounted in a moving body and the first base station or the second base station. The update unit configured to update the reference communication quality information stored in the storage unit using the communication quality information.