Mesh Network Route Selection Using Multiband Link Cost
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Solution Overview
Problem
Current powerline communication methods, such as G3-PLC, are limited in capacity and complexity when switching between frequency bands, leading to inefficiencies in network communication and the inability to handle increased resource demands in Automated Meter Management (AMM) electrical supply networks.
Innovation Solution
A method for selecting a communication route between node devices in a mesh powerline and/or radio-frequency network that calculates a route cost as a weighted sum of link costs across multiple frequency bands, allowing for the selection of the route with the smallest cost, which includes active routes and maximum active routes in the routing table, enabling better utilization of transmission capacities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the G3-PLC protocol is used with single frequency band, then the network is simpler to manage, but the network capacity is limited and cannot handle increased resource demands
Solution Approach 1:
The patent enables node devices to simultaneously operate across multiple frequency bands (PLC and RF), allowing a single device to perform multiple communication functions. This multi-functionality increases network capacity by providing diverse transmission paths while maintaining manageable complexity through automated route selection protocols.
Solution Approach 2:
The patent implements dynamic frequency band switching and adaptive route selection where the network automatically adjusts communication parameters based on real-time conditions. The system can dynamically switch between frequency bands and select optimal routes without manual intervention, resolving the contradiction between capacity and management complexity.
2Adaptability or versatility
If reconfiguration is performed to switch between frequency bands, then network adaptability improves, but the reconfiguration process becomes particularly complex
Solution Approach 1:
The patent implements self-service reconfiguration where node devices automatically detect network conditions, select appropriate frequency bands, and perform reconfiguration without external intervention. The routing protocol autonomously manages frequency switching and route optimization, significantly reducing reconfiguration complexity while maintaining high adaptability.
Solution Approach 2:
The patent employs feedback mechanisms where node devices continuously monitor network conditions and adjust their operation accordingly. This feedback loop enables automatic adaptation to changing conditions, simplifying the reconfiguration process while improving frequency band adaptability through data-driven decisions.
3Productivity
If multiple frequency bands are used simultaneously, then network capacity increases, but the route cost calculation becomes more complex
Solution Approach 1:
The patent segments the route cost calculation into separate components for each frequency band, allowing independent evaluation of PLC and RF paths. This segmentation simplifies the overall calculation by breaking down the complex multiband route cost into manageable band-specific costs, while still enabling comprehensive capacity utilization.
Data Source
AI summary
Selecting a communication route between a first and a second node device of a mesh electrical supply network using powerline and/or radio-frequency communications is described. A route cost is obtained for each possible communication route. A communication route of the lowest route cost is selected. For a given route, the route cost is the sum of the link costs between successive node devices on the route, the link cost between two successive node devices is a weighted sum between a maximum value from a link cost in a forward direction and a link cost in a backward direction and a ratio between a number of active routes and a maximum number of active routes. A link cost in a given direction depends on the cost of the link, in the given direction, calculated for each frequency band of frequency bands used by the two successive node devices for communicating.