TSN Stream Reservation for Real-Time Industrial Field Bus Data
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Solution Overview
Problem
Conventional field buses in industrial automation systems face challenges integrating with new Ethernet networks, particularly due to bandwidth limitations and the lack of mechanisms to monitor and adapt resource usage, leading to potential network failures and inefficiencies.
Innovation Solution
The method involves configuring streams within AVB or TSN networks to reserve resources for field buses, allowing data transmission through protected connections with guaranteed latency, enabling the integration of field buses into Ethernet networks without requiring changes to existing devices and ensuring reliable real-time communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional field buses are integrated into new Ethernet networks, then network bandwidth and capabilities are improved, but integration problems and lack of standardized mechanisms cause reliability to deteriorate
Solution Approach 1:
The patent introduces stream parameters (VLAN ID, stream address, priority) as intermediary elements that mediate between conventional field bus devices and AVB/TSN Ethernet networks. These parameters act as a translation layer, allowing field bus data frames to be properly identified, prioritized, and transmitted through the standardized Ethernet network without requiring changes to existing field bus devices, thus resolving the integration reliability issue while maintaining high bandwidth capabilities
Solution Approach 2:
The patent changes the parameter representation of data frames by adding stream parameters (VLAN ID, stream address, priority) to field bus data frames. This parameter transformation enables the network switches to properly handle real-time traffic according to AVB/TSN standards, ensuring reliable integration without sacrificing the bandwidth advantages of modern Ethernet networks
2Reliability
If resources are permanently divided in Ethernet networks for real-time data, then real-time performance is improved, but bandwidth utilization efficiency deteriorates
Solution Approach 1:
The patent implements dynamic resource allocation through AVB/TSN stream parameters that allow bandwidth to be allocated on-demand based on actual real-time traffic requirements. Instead of permanent static division, the network can dynamically adjust resource allocation to different streams, ensuring real-time performance for critical data while efficiently utilizing available bandwidth for non-real-time traffic, thus resolving the contradiction between real-time reliability and bandwidth efficiency
3Reliability
If manual resource planning is performed in Ethernet networks, then network control is improved, but complexity and effort required deteriorate
Solution Approach 1:
The patent enables the network to perform resource planning automatically through standardized AVB/TSN mechanisms. Network switches can autonomously process stream parameters (VLAN ID, stream address, priority) to allocate resources and manage real-time traffic without requiring manual configuration. This self-service capability maintains reliable network control while dramatically reducing the complexity and effort required for resource planning, as the standardized protocols handle the complex tasks automatically
Data Source
AI summary
A control method, an apparatus, a computer program and a computer-readable medium and a method for communicating data in an industrial network, wherein data are transmitted between at least two devices, at least one device of which is preferably on an Ethernet-based field bus, where the data are transmitted at least in sections via a TSN network, in which at least one stream has been or is configured for the at least one field bus, resources have been and/or are reserved for the at least one stream at one or more nodes, forming switches and/or bridges of the network, and data frames that emanate from at least one device on the field bus and/or are intended for at least one device on the field bus are transmitted via the at least one stream.