Communication Device Frequency Band Selection for Power Line Congestion
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Solution Overview
Problem
Conventional communication methods using multiple frequency bands often lead to communication efficiency reduction due to congestion in specific bands, especially in power line communication, where certain frequency bands have better transmission characteristics, and equipment like breakers can deteriorate communication quality.
Innovation Solution
A communication device that detects transmission path characteristics and classifies other devices into groups, selecting a frequency band for communication based on these classifications to distribute load efficiently and prevent congestion, using a first and second frequency band with different characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If frequency band selection is based on transmission path state detection, then communication quality for individual devices is improved, but overall communication efficiency decreases due to congestion in specific frequency bands
Solution Approach 1:
The patent applies local quality by classifying communication devices into different groups based on their transmission path characteristics, and assigning different frequency bands to different groups. This ensures that each device receives appropriate frequency band allocation according to its specific communication environment, preventing congestion in any single frequency band while maintaining optimal communication quality for each device group.
2Reliability
If a specific frequency band is selected for communication, then transmission characteristic is improved, but load distribution over frequency bands deteriorates causing congestion
Solution Approach 1:
The patent implements dynamics by dynamically adjusting frequency band allocation based on real-time classification of communication devices. The system continuously monitors transmission path characteristics and reassigns frequency bands accordingly, enabling flexible load distribution across multiple frequency bands while maintaining optimal transmission characteristics for each device group.
3Adaptability or versatility
If communication is performed through equipment like breakers, then device compatibility is improved, but communication quality deteriorates due to significant differences in received power
Solution Approach 1:
The patent applies parameter changes by detecting transmission path characteristics including received power levels, and using these parameters to classify devices and select appropriate frequency bands. This approach compensates for the deteriorating effect of equipment like breakers by adapting the frequency band selection based on the actual transmission conditions, thereby maintaining communication quality despite the presence of such equipment.
Data Source
AI summary
A communication device includes a transmission path state determination unit; a communication unit and a topology determination unit configured to classify a destination device into a first group when a detected transmission path characteristic satisfies a criteria, and to classify a destination device into a second group when the detected transmission path characteristic does not satisfy the criteria. Additionally, a frequency band control unit is configured to select a first frequency band and a second frequency band higher than the first frequency band based on whether the destination device is classified into the first group, or into the second group, the first and second frequency bands being obtained by dividing an entire frequency band.