Distribution Node Telegram Fragmentation for Automation Networks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current automation communication networks face delays in forwarding telegrams due to the store-and-forward principle, where distribution nodes do not initiate forwarding of telegram fragments until they are fully received, leading to inefficient data transmission and increased delays.
Innovation Solution
The method involves a distribution node that interrupts and fragments telegrams with a lower priority level when a higher priority telegram is received, allowing for immediate forwarding of fragments, with fragmentation information enabling reassembly by the intended subscriber, thus optimizing data transmission paths and minimizing delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the store-and-forward principle is applied, then data transmission reliability is improved, but transmission delay increases
Solution Approach 1:
The patent segments telegrams into fragments that can be forwarded independently. When a distribution node receives a telegram fragment, it can immediately forward it without waiting for the complete telegram, thereby reducing transmission delay while maintaining reliability through proper fragment reassembly at the destination.
Solution Approach 2:
The patent implements preliminary forwarding of telegram fragments before the complete telegram is received. The distribution node prepares and forwards fragments as soon as they are available, rather than waiting for the full telegram to be received and processed, thus reducing delay while ensuring complete data transmission.
2Speed
If telegrams are forwarded immediately upon fragment reception, then transmission speed is improved, but data completeness may be compromised
Solution Approach 1:
The patent employs feedback mechanisms where the destination subscriber receives fragment information and confirmation signals. The distribution node uses feedback about fragment reception status to manage the forwarding process, ensuring that all fragments are successfully transmitted and reassembled before confirming data completeness.
Solution Approach 2:
By segmenting telegrams into manageable fragments, the system can forward individual fragments independently at high speed while maintaining the ability to reassemble them correctly at the destination, thus achieving both speed and data completeness.
3Reliability
If distribution nodes wait for complete telegram reception before forwarding, then data integrity is ensured, but bandwidth utilization efficiency decreases
Solution Approach 1:
The patent enables distribution nodes to take preliminary action by forwarding telegram fragments as soon as they are received, rather than waiting for the complete telegram. This preliminary forwarding significantly improves bandwidth utilization efficiency while the fragment reassembly mechanism at the destination ensures data integrity is maintained.
Solution Approach 2:
The patent introduces dynamic forwarding behavior where the distribution node adapts its forwarding decisions based on real-time fragment reception and network conditions. This dynamic approach allows the system to optimize bandwidth utilization by forwarding fragments immediately while maintaining data integrity through controlled reassembly processes.
Data Source
AI summary
At least one distribution node with a plurality of input/output interfaces is provided in an automation communication network. Data is exchanged via telegrams with priority levels. The distribution node interrupts transmission of a telegram having a first priority level if a telegram with a second, higher priority level is received. The distribution node terminates the interrupted telegram, which forms a first fragment defined by sending first fragmentation information at the end of the first fragment. A part that has not been sent forms a second fragment. The distribution node stores the second fragment together with second fragmentation information. After sending the telegram having the second, higher priority level, the distribution node sends the second fragment together with the second fragmentation information. A node, for which the telegram having the first priority level is intended, assembles the first and second fragments on the basis of the first and second fragmentation information.