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Ethernet model design method based on time slot non-persistent CSMA

A model design, Ethernet technology, applied in the direction of data exchange network, digital transmission system, electrical components, etc., can solve problems such as Ethernet network data transmission conflicts, achieve the effect of reducing data conflicts, shortening the research and development cycle, and ensuring reliability

Active Publication Date: 2019-10-01
CHANGCHUN UNIV OF TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to propose an Ethernet model design method based on time slot non-persistence CSMA in view of the data transmission conflicts existing in the existing Ethernet network

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  • Ethernet model design method based on time slot non-persistent CSMA
  • Ethernet model design method based on time slot non-persistent CSMA
  • Ethernet model design method based on time slot non-persistent CSMA

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Embodiment Construction

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings. Such as figure 1 As shown, the design method of the present invention is mainly divided into three parts: the industrial Ethernet network channel transmission structure model, the industrial Ethernet network transmission protocol improvement model and the industrial Ethernet network data transmission capture effect model, and thus builds the industrial Ethernet network Communication system model.

[0021] First of all, the present invention models path loss and shadow fading in the channel model, thus ensuring the stability of changes caused by distance and obstacles during data transmission; after ensuring channel stability, focus on non-adherence to the CSMA protocol in the original time slot, The original time slot is subdivided, the data packet can only be transmitted in the subdivided time slot, and the data packet generated in the current time slot can o...

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Abstract

The invention relates to an Ethernet model design method based on a CSMA protocol, in particular to an Ethernet model design method based on time slot non-persistent CSMA. The method comprises establishment of an industrial Ethernet network channel transmission structure model, a transmission protocol improvement model and a network data transmission capture effect model. An existing time slot non-persistent CSMA protocol is taken as a main research protocol, a new time slot required by data transmission is obtained by segmenting time slots in the existing protocol again, and meanwhile, a capture effect is applied to the new protocol, so that an Ethernet network model is established, and transmission characteristic analysis is carried out on Ethernet network transmission data; compared with an original time slot non-persistent CSMA protocol model, the established model is more real-time and reliable. And meanwhile, the established model not only reduces the defects of channel conflict,non-utilization and the like, but also improves the real-time performance of the industrial Ethernet network and greatly improves the effect that the industrial Ethernet network undertakes data transmission.

Description

technical field [0001] The invention relates to an Ethernet model design method based on the CSMA protocol, in particular to an Ethernet model design method based on time slot non-persistence CSMA, which can be used to solve the problem of channel transmission conflicts and unused channels in industrial Ethernet communication network systems. The reliability and real-time decline of the industrial Ethernet network system caused by the defects such as the network system provide a basic platform for the application and theoretical research of the industrial Ethernet communication network. Background technique [0002] Ethernet (Ethernet) is a network that follows the IEEE802.3 standard and can be transmitted on optical cables and twisted-pair wires. It is also the most common communication protocol standard used by existing local area networks today. There are four types of 1Gbit / s and 10Gbit / s, which can meet the fast, real-time and reliable control requirements of Ethernet, ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24
CPCH04L41/145
Inventor 王宏志戚小莎王晓宇胡黄水
Owner CHANGCHUN UNIV OF TECH
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