Ring or linear network system based on EPA protocol and non-real-time data transmission method

A technology of network system and transmission method, applied in the field of ring or linear network system and non-real-time data transmission, can solve the problems affecting network transmission efficiency, waste of network resources, unclear non-real-time data transmission method, etc., so as to improve data transmission. effect of speed

Active Publication Date: 2020-09-18
浙江杰芯科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] This application provides a ring or linear network system based on the EPA protocol and a non-real-time data transmission method and a non-real-time data transmission method, which are used to solve the non-real-time data transmission method in the transmission process of the ring line or linear Ethernet in the prior art Unclear, due to the waste of network resources caused by the monopoly of network resources, the problem that affects the efficiency of network transmission

Method used

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  • Ring or linear network system based on EPA protocol and non-real-time data transmission method
  • Ring or linear network system based on EPA protocol and non-real-time data transmission method
  • Ring or linear network system based on EPA protocol and non-real-time data transmission method

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Experimental program
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Embodiment 1

[0044] refer to Figure 1-2 As shown, this embodiment provides a ring or linear network system based on the EPA protocol. Further, the ring or linear network system based on the EPA protocol provided by this embodiment includes an EPA device applied to a ring network or a linear network . The transmission of data packets based on the EPA protocol is realized between each EPA device.

[0045] An EPA device in one embodiment for storing data packets and providing read and write access. In this embodiment, it is used to store non-real-time data packets. EPA devices include transmit buffers for reading or writing packets. The data packets in the non-real-time stage in this embodiment are described according to each stage in the EPA macrocycle, refer to image 3 As can be seen, the EPA macrocycle in this example is divided into three time slices of the real-time period stage, the real-time non-period stage and the non-real-time stage, and the non-real-time data packet in the pr...

Embodiment 2

[0061] Reference attached Figure 4-7 As shown, this embodiment provides a non-real-time data transmission method based on the EPA protocol, using a ring or linear network system based on the EPA protocol as described in Embodiment 1, which includes a plurality of EPA devices. Linear Ethernet or Ring Ethernet.

[0062] In the EPA linear Ethernet or EPA ring Ethernet in this embodiment, point-to-point full-duplex transmission is adopted between the EPA network nodes, and each EPA device in the whole network adopts a non-exclusive parallel transmission mechanism, and the non-real-time In the stage, when all EPA devices are used as source nodes, they transmit non-real-time data packets in parallel in both directions at the same time, so that when all EPA devices are used as target nodes, they can receive the same non-real-time data packets in two directions successively.

[0063] Based on this, a method for transmitting non-real-time data based on the EPA protocol provided in th...

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PUM

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Abstract

The invention provides a ring or linear network system based on an EPA protocol and a non-real-time data transmission method. The system comprises a plurality of EPA devices, wherein after receiving data packets in a non-real-time stage, the EPA devices select processing modes of the data packets to determine effective data packets, analyze priority field information in the effective data packets,and compare in-network residence time in the priority field information with a maximum allowable value of the in-network residence time; the EPA devices automatically improves the sending priority ofthe effective data packets when the residence time of the data packets passing through the ring network or the linear network is greater than the maximum allowable value of the EPA devices; and whenthe residence time of the data packets passing through the ring Ethernet or the linear Ethernet is less than the maximum allowable value, the EPA devices carries out priority comparison and dynamic rearrangement on the sending priorities of the effective data packets and the data packets in the sending buffer area in the effective data packets, so that the effective data packets are sent and cached according to the priority sequence. According to the invention, the non-real-time data transmission efficiency and reliability of the EPA under an annular or linear network structure are effectivelyimproved.

Description

technical field [0001] The invention relates to EPA communication technology, in particular to a ring or linear network system based on EPA protocol and a non-real-time data transmission method. Background technique [0002] EPA real-time industrial Ethernet technology is a fully autonomous and controllable industrial Ethernet transmission technology in China. The core of this technology is to add EPA communication scheduling entity on the data link layer, and solve the problem of industrial Ethernet through EPA time-sharing scheduling mechanism. Real-time and non-real-time data transfer issues. [0003] Among the existing disclosed related technologies, the following patents are related to non-real-time data transmission. [0004] The EPA system-on-chip, EPA communication system and communication method with the publication number CN106685735A mentioned that "EPA data communication adds a third non-real-time stage on the basis of the previous periodical and non-periodical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/42H04L5/14H04L12/851
CPCH04L12/42H04L5/14H04L47/2433
Inventor 曹焱郑慧娴魏彬杨大胜唐艳丽周海敏
Owner 浙江杰芯科技有限公司
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