Parent Node Selection in Power Line Communication Networks
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Solution Overview
Problem
Node devices in power line communication networks often disconnect due to crosstalk and interference, leading to instability and delayed reconnection, which affects the hierarchy and stability of the communication network.
Innovation Solution
A method for selecting a parent node device based on statistical knowledge of transmission quality organized by calendar periods, where node devices verify potential transmission disturbances and switch to a more stable parent node to ensure network stability, using a calendar monitoring mechanism to anticipate and mitigate disturbances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If node devices use PLC line carriers for communication in a tree-shaped network, then communication range is extended and hierarchical structure is established, but node devices experience disconnection due to crosstalk and interference
Solution Approach 1:
The system performs preliminary actions by collecting statistical knowledge of transmission quality before disconnection occurs. The calendar monitoring mechanism proactively identifies periods with expected transmission disturbances and pre-selects alternative parent nodes, allowing node devices to switch connections before actual disconnection happens, thus maintaining network reliability while preserving the extended communication range of the tree-shaped topology
2Reliability
If node devices switch parent nodes reactively after disconnection, then reconnection is achieved, but significant time delay occurs and network stability is compromised
Solution Approach 1:
The system performs preliminary actions by continuously collecting statistical knowledge of transmission quality between each node device and potential parent nodes, organized by calendar periods. Before disconnection occurs, the system identifies alternative parent nodes that would provide stable connection, enabling immediate switching without time delays when disturbances occur
Solution Approach 2:
The system implements a feedback mechanism where transmission quality statistics are continuously monitored and used to inform parent node selection decisions. The calendar monitoring mechanism uses historical transmission quality data to predict future performance and adjust parent node selection accordingly, creating a closed-loop system that reduces reconnection time by anticipating problems before they occur
3Loss of information
If statistical knowledge is collected continuously without time organization, then transmission quality data is available, but transmission disturbances cannot be anticipated for specific periods
Solution Approach 1:
The system segments the continuous statistical knowledge into discrete calendar periods, organizing transmission quality data by time intervals. This segmentation allows the calendar monitoring mechanism to identify patterns and predict which specific periods are likely to experience transmission disturbances, enabling proactive parent node selection for each calendar period rather than treating all time equally
Solution Approach 2:
The system implements periodic action by organizing statistical knowledge according to calendar periods and using this periodic structure to anticipate transmission disturbances. The calendar monitoring mechanism evaluates transmission quality statistics for upcoming calendar periods and proactively selects parent nodes before disturbances occur, transforming continuous data collection into periodic, actionable insights
Data Source
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AI summary
In a tree-like communication network implemented on an electrical power supply network, a first node device obtains (503) statistical knowledge of transmission quality between said first node device and each second node device that can take the role of parent node device for said first node device, said statistical knowledge being organized according to a division of time into calendar periods.The said first node device implements a calendar monitoring mechanism such that, for each switchover to a new calendar period, the said first node device checks (504), based on statistical data, whether transmission disturbances are envisaged between the said first node device and the parent node device to which the said first node device is attached; and selects, if checked positively, another parent node device for the said new calendar period.