Mobile Relay Reception Quality Map Generation
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Solution Overview
Problem
Existing wireless access systems face challenges in maintaining high average reception quality across large communication areas without incurring excessive construction costs, particularly due to the need for additional picocell base stations which increase costs and complexity.
Innovation Solution
The system employs mobile communication apparatuses equipped with position detection, map acquisition, and direct quality estimation means to dynamically select between direct and relayed reception modes based on current position and reception quality, optimizing resource allocation and interference management within the communication area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If picocell base stations are constructed within the macrocell communication area to increase high-quality reception areas, then the average reception quality is improved, but the construction costs become excessive
Solution Approach 1:
The patent introduces mobile terminals as intermediary relay nodes. Instead of deploying additional picocell base stations, the system utilizes existing mobile terminals to relay communication signals. The mobile terminal receives signals from the macrocell base station and retransmits them to other mobile terminals in areas with poor direct reception, thereby improving overall reception quality without additional infrastructure construction.
Solution Approach 2:
The patent enables mobile terminals to serve dual functions: as end-user devices and as relay nodes for other devices. The mobile terminal autonomously determines whether to act as a relay based on its own reception quality and the needs of other terminals, eliminating the need for additional dedicated relay infrastructure and reducing construction costs.
2Reliability
If multiple picocell base stations are deployed to cover small areas within the macrocell, then the reception quality in those areas is improved, but the system complexity and construction costs increase
Solution Approach 1:
The patent makes mobile terminals multi-functional by enabling them to operate both as communication endpoints and as relay nodes. This universal functionality eliminates the need for separate picocell base station infrastructure, reducing system complexity while maintaining the ability to provide localized reception quality improvement in specific areas.
Solution Approach 2:
The patent uses mobile terminals as intermediary relay nodes to provide localized coverage enhancement. Instead of deploying dedicated picocell base stations for each small area, the system dynamically selects mobile terminals to act as intermediaries, thereby providing area-specific reception improvement without increasing overall system complexity.
3Ease of operation
If direct reception mode is used regardless of position, then the system operation is simple, but the reception quality in certain areas deteriorates
Solution Approach 1:
The patent implements dynamic reception mode selection where mobile terminals automatically switch between direct reception mode and relay reception mode based on real-time reception quality conditions. The system dynamically determines the appropriate mode for each terminal based on its position and signal conditions, optimizing reception quality while maintaining operational simplicity through automated decision-making.
Solution Approach 2:
The patent incorporates feedback mechanisms where mobile terminals continuously monitor their reception quality and use this information to determine whether to switch between direct and relay reception modes. The system uses feedback from reception quality measurements to automatically adjust the reception mode, ensuring high reception quality without requiring complex manual configuration.
Data Source
AI summary
In a wireless communication system, a mobile communication apparatus judges the reception quality available at its current position for direct reception of information transmitted from a fixed wireless station, with the judgement based upon the current position and upon a reception quality map expressing a relationship between reception positions and corresponding reception quality values. If the reception quality at the current position is judged to be sufficient, direct reception is executed, while otherwise, a limitation is placed upon such direct reception, for example by postponing the direct reception until reaching a position at which the reception quality will be sufficient.