Full-Duplex Ring Network Node Synchronization
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Solution Overview
Problem
In control network systems, data exchange among nodes with a ring-type topology is inefficient, leading to long data exchange cycles due to relay delays, which hinder real-time data sharing and increase network load.
Innovation Solution
Implementing a full-duplex communication system with synchronized send timers across all nodes, allowing simultaneous data transmission on multiple communication lines to avoid packet collisions and reduce relay delays, thereby optimizing data exchange efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If time division multiplexing is used for data transmission in a ring-type network, then packet collisions are avoided, but relay delays increase and data exchange cycle time becomes long
Solution Approach 1:
The network transmission path is segmented into multiple independent communication lines (first communication line and second communication line) allowing parallel data flow. Each line carries data in opposite directions around the ring, enabling simultaneous transmission without collisions while reducing total transmission time through parallel processing of data packets.
Solution Approach 2:
The patent transitions from single-direction sequential transmission to multi-directional parallel transmission by utilizing both clockwise and counter-clockwise paths around the ring network. This dimensional expansion allows multiple data streams to coexist without interference, fundamentally changing the transmission paradigm from time-division to space-division multiplexing.
2Productivity
If synchronized transmission timing is implemented across all nodes, then data exchange efficiency improves, but network complexity increases due to synchronization requirements
Solution Approach 1:
The patent combines multiple communication channels (first and second communication lines) into a unified ring network architecture where data flows simultaneously in both directions. This merging eliminates the need for complex node-by-node synchronization by allowing parallel transmission through topological symmetry, reducing synchronization overhead while maintaining high efficiency.
Solution Approach 2:
Each node automatically determines transmission timing based on its position in the ring and the direction of data flow, without requiring centralized synchronization control. The distributed nature of the dual-directional ring allows nodes to self-organize transmission sequences, reducing overall system complexity while maintaining efficient data exchange.
Data Source
Figure 1(a)~1(b)
Figure 2(a)~2(b)
Figure 3
AI summary
A data transmission unit 52 transmits data of a local device to an adjacent station at a prescribed timing generated by a first timer 51 in every prescribed data exchange cycle (within a scanning time). Upon receipt of transmitted data from an arbitrary adjacent station, a relay unit 53 obtains the transmitted data, and relays the transmitted data to another adjacent station. The prescribed timings generated by the first timers 51 of all node devices are made to be a same timing.