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Internet-based data transmission method, device and system

A data transmission method and data transmission technology, applied in the direction of digital transmission system, transmission system, data exchange network, etc., can solve the problem of uncertainty of data transmission time, unable to meet the requirement of certainty of data transmission sending time, etc. The effect of time determinism

Active Publication Date: 2019-06-07
KYLAND TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The embodiment of the present invention provides a data transmission method, device and system based on the Internet, to solve the current problem of using the Ethernet communication technology, which needs to transform the two-wire network into a Category 5 twisted-pair Ethernet, and the existing The Ethernet after the transformation in the technology adopts the CSMA / CD technology to have the uncertainty of the data transmission time. When the network load is heavy, it cannot meet the requirements of the deterministic sending time of the data transmission in the industrial control.

Method used

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  • Internet-based data transmission method, device and system

Examples

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Embodiment 1

[0039] Such as figure 1 As shown, it is a schematic flow chart of the Internet-based data transmission method described in Embodiment 1 of the present invention. The method is applicable to a two-wire data transmission network and may include the following steps:

[0040] Step 101: the master node receives a time slice acquisition request sent by the slave node, and the time slice acquisition request includes the data volume of the data to be transmitted.

[0041] Step 102: According to the data amount of the data to be transmitted and the unallocated time slot, allocate a time slot for the data to be transmitted, and obtain time slot allocation information.

[0042] Wherein, in one embodiment, the number of time slices that can be transmitted is limited, and how many time slices to allocate can be determined according to the amount of data to be transmitted. Therefore, the time slice allocation information may include a time slice identifier of each allocated time slice, whi...

Embodiment 2

[0052] Such as figure 2 As shown, it is a schematic flow chart of the Internet-based data transmission method described in Embodiment 2 of the present invention. The method is applicable to a two-wire data transmission network and may include the following steps:

[0053] Step 201: The slave node sends the generated time slice acquisition request to the master node; the time slice acquisition request includes the data volume of the data to be transmitted.

[0054] Step 202: Receive the time slice allocation information sent by the master node; the time slice allocation information is that after the master node receives the time slice acquisition request, according to the data volume of the data to be transmitted and the unallocated time slice It is obtained after the time slice is allocated for the data to be transmitted.

[0055] Step 203: Send the data to be transmitted according to the time slice allocation information.

[0056] Wherein, in one embodiment, in order to ef...

Embodiment 3

[0079] Based on the same inventive concept, the embodiment of the present invention also provides an Internet-based data transmission device, which is suitable for a two-wire data transmission network, such as image 3 Shown is a schematic structural diagram of the device, including:

[0080] A time slice acquisition request receiving module 301, configured to receive a time slice acquisition request sent from a node, wherein the time slice acquisition request includes the amount of data to be transmitted;

[0081] A time slice allocation module 302, configured to allocate a time slice for the data to be transmitted according to the data volume of the data to be transmitted and unallocated time slices, and obtain time slice allocation information;

[0082] The time slice allocation information sending module 303 is configured to send the time slice allocation information to the slave node, so that the slave node sends the time slice allocation information to the data to be tra...

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Abstract

The invention discloses a data transmission method, device and system based on Internet. The scheme is suitable for a two-wire-system data transmission network. The method comprises the following steps: receiving a time slice acquisition request sent by a slave node by a master node, wherein the time slice acquisition request includes the data volume of data to be transmitted; allocating a time slice to the data to be transmitted according to the data volume of the data to be transmitted and unallocated time slices, and acquiring time slice allocation information; and transmitting the time slice allocation information to the slave node in order that the slave node transmits the data to be transmitted according to the time slice allocation information. In the scheme, the master node allocates a time slice to the slave node according to the time slice acquisition request of the slave node in order that the slave node can transmit the data to be transmitted according to the time slice allocated to the slave node. Through adoption of the data transmission method, device and system, a network does not need to be reformed into a class-5 twisted-pair network. Meanwhile, the slave node transmits data according to the time slice, so that the time certainty of data transmission can also be ensured.

Description

technical field [0001] The invention relates to the technical field of data transmission, in particular to an Internet-based data transmission method, device and system. Background technique [0002] In the field of industrial control, with the development of Ethernet communication technology, it gradually replaces the traditional industrial field bus technology to transmit industrial control data. [0003] In the existing industrial control field, CSMA / CD (Carrier Sense Multiple Access with Collision Detection, Carrier Sense Multiple Access with Collision Detection) is mostly used to transmit data. Specifically, this technology requires each node to detect whether the channel is free before sending data, and if it is free, send data immediately; otherwise, wait for a period of time until the channel is free before sending data. If two or more nodes make sending requests at the same time after the last piece of information is sent, it will be judged as a conflict. If a col...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/403
CPCH04L12/4035
Inventor 张洪雁张俭锋闫志伟韦锦驹
Owner KYLAND TECH CO LTD
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