Master-Slave Network Node Recovery via Local Mesh Beacon Distribution
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Solution Overview
Problem
The Powerline Intelligent Metering Evolution (PRIME) standard's master-slave tree network architecture faces significant disruptions and increased network traffic congestion due to malfunctioning branch nodes, leading to disconnection of successive nodes and inefficient re-establishment of connections.
Innovation Solution
A method and device configuration that enables quick recovery from broken nodes by using a neighboring node list to select an alternate path, distribute beacons, and manage node identifiers, allowing the network to maintain communication without modifying internal information of unaffected nodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a master-slave tree network topology is used for powerline network monitoring, then the network structure is simplified and monitoring is enabled, but heavy network traffic loading occurs at the root node and traffic congestion occurs across the network
Solution Approach 1:
The patent segments the centralized master-slave tree network into multiple independent mesh network groups. Each group operates autonomously with local routing, dividing the network traffic into separate segments. This reduces the traffic burden on any single root node and eliminates the single point of congestion that characterized the original tree topology.
2Stability of the object's composition
If transmission between leaf nodes must be conducted through the master node, then the master-slave hierarchy is maintained, but heavy network traffic loading occurs at the root node
Solution Approach 1:
The patent introduces dynamic routing capabilities that allow the network to adaptively select transmission paths based on current network conditions. Nodes can dynamically choose between direct mesh connections and traditional master-slave paths, optimizing traffic flow in real-time while preserving the logical master-slave hierarchy for control functions.
3Device complexity
If a branch node malfunctions in the master-slave tree network, then the network topology remains simple, but all nodes successive to the broken node are seriously affected
Solution Approach 1:
The patent implements local mesh connectivity within network groups, giving each local area redundant paths and alternative routing options. When a branch node fails, only the immediately affected local group experiences disruption, while other groups continue operating independently. This localizes the impact of failures rather than propagating them throughout the entire network.
4Stability of the object's composition
If the network uses traditional beacon reception from master node, then the master-slave structure is maintained, but nodes experience disconnection when branch nodes fail
Solution Approach 1:
The patent introduces intermediate relay nodes that can forward beacons and data packets when direct master-node paths are blocked. These intermediary nodes act as mediators, allowing slave nodes to maintain connections through alternative paths even when traditional branch nodes fail, thus preserving network reliability while maintaining the master-slave control structure.
Data Source
AI summary
A master device, a slave device, and methods are disclosed. The method is performed by a first slave device connected to a master-slave tree network, comprising: determining whether a beacon has not been received within a predetermined time period; and distributing a first beacon to a second slave device if no beacon has been received within the predetermined time period; wherein for the first slave device to remain in the master-slave-network, a beacon be received by the first slave device within the predetermined time period.