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Data transmission method based on time triggered Ethernet and node device

A data transmission method and time-triggered technology, applied in the field of Ethernet, can solve problems such as network bandwidth waste, and achieve the effect of improving efficiency and utilization

Active Publication Date: 2013-03-27
KYLAND TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Embodiments of the present invention provide a time-triggered Ethernet-based data transmission method and node equipment to solve the problem of wasting network bandwidth caused by TTE-based data transmission in the prior art

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  • Data transmission method based on time triggered Ethernet and node device
  • Data transmission method based on time triggered Ethernet and node device
  • Data transmission method based on time triggered Ethernet and node device

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Embodiment Construction

[0027] In order to effectively improve the utilization rate of network bandwidth in the TTE-based data transmission mechanism, the present invention provides a TTE-based data transmission method and node equipment.

[0028] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0029] figure 2 A schematic diagram of the TTE-based data transmission process provided by a specific embodiment of the present invention, the process includes the following steps:

[0030] Step 201: Each node receives the scheduling periodic table determined based on the time-triggered message sent by the master node.

[0031] In the present invention, when the master node determines the scheduling periodic table, it is determined according to the byte number information contained in the time-triggered message sent by each node in a period, and the physical link information occupied by the time-triggered message. That is, the time schedule table incl...

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Abstract

The invention discloses a data transmission method based on time triggered Ethernet (TTE) and a node device. The data transmission method based on TTE and the node device solve the problem that network bandwidth is wasted caused by data transmission based on TTE. In the data transmission method, a main node determines a scheduling period table based on time triggered messages, when accident triggered messages to be transmitted exist in the nodes, and according to information stored in the scheduling period table, when the physical links occupied by accident triggered messages do not conflict with the physical links corresponding to the current slot time according to judgment, the accident triggered messages are transmitted at the current slot time. Due to the fact that the main nodes do not need to independently distribute time for the accident triggered messages of the nodes, when the accident triggered messages exist in the nodes, the accident triggered messages can be transmitted in the current slot time as long as the physical links occupied by the accident triggered messages conflict with the physical links corresponding to the current slot time, so that data transmission efficiency is effectively improved, and utilization rate of network bandwidth is improved.

Description

technical field [0001] The present invention relates to the technical field of Ethernet, in particular to a time-triggered Ethernet (Time-Triggered-Ethernet, TTE)-based data transmission method and node equipment. Background technique [0002] In recent years, Ethernet has made great progress in the field of industrial control and has become a widely used LAN technology. Using Ethernet in industrial control networks can easily realize interconnection with the Internet. In addition, a large number of high-level protocols have been successfully applied to the Ethernet technology, such as the TCP / IP protocol has been successfully applied to the Ethernet technology, so the use of Ethernet can be easily applied in various applications. [0003] The bus access mode of the time-triggered architecture (Time-Triggered Architecture, TTA) is a time division multiplexing (Time Division Multiple Access, TDMA) mode, and one cycle of TDMA includes several time slots. In each cycle, a swit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/16H04L47/6275
CPCH04L12/4015H04L12/4035H04L12/413H04J3/0694H04L12/40H04L47/6275
Inventor 马化一薛百华丁杰
Owner KYLAND TECH CO LTD
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