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Communication in a data network

A data network and data technology, applied in the direction of data exchange network, digital transmission system, hybrid switch system, etc., can solve the problem that data cannot reach users in real time

Inactive Publication Date: 2005-11-16
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This involves real-time critical data or data exchange, since the inability of the data to reach a specific location in real time can lead to undesired consequences at the user

Method used

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  • Communication in a data network
  • Communication in a data network
  • Communication in a data network

Examples

Experimental program
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Embodiment Construction

[0026] figure 1 A switched data network 17 with subscribers 1 to 13 is shown. Users 1-13 are coupled to each other via point-to-point communication connections 20-31. exist figure 1 In the exemplary embodiment shown, a switched data network 17 , for example a switched Ethernet network, is used for communication between the components of the automation system. Subscribers 4 - 13 in the automation system are coupled to one another via coupling elements 1 - 3 for forwarding data packets transmitted via communication links 20 - 30 . Mobile programming device 4, central processing and observation system 5, distributed processing and observation stations 6, 7, storable programmable controllers 8, 9, input / output units 10, 11 and other peripheral devices 12, 13 are respectively connected through point-to-point 20-30 are connected with switching coupling elements 1-3. That is to say, the communication between the users 4 - 13 of the automation system does not take place directly v...

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Abstract

The invention relates to a method and a system for communicating in a data network (101), especially switched Ethernet, and a station (102) in such a data network (101). The aim of the invention is to reduce the communication resources in the data network (101), which are used for transmitting messages (119-135). Said aim is achieved by defining time slots that are repeated in a basic cycle, respectively allocating a first identifier U to the messages (119-135), which assigns a group of n successive time slots for transmitting the respective message (119-135), said group being cyclically repeated, allocating a second identifier Z to the messages (119-135), which assigns (119-135) an m time slot in the sequence of n time slots of a group to each message for transmitting the respective message (119-135), m being greater than 1 and smaller than n, and transmitting the messages (119-135) in the respective assigned time slot.

Description

technical field [0001] The invention relates to a method and a system for communication in a data network, in particular a switched Ethernet network, and to subscribers in the data network. Background technique [0002] The data network enables communication between multiple users through networking, that is, the connection between users. Here, communication means transferring data between users. In this case, the data to be transmitted is sent as a data telegram, ie the data is combined into a plurality of packets and sent in this form via the data network to the corresponding receiver. It is therefore also called a data packet. In this description, the term "transmission data" is used completely synonymously for the above-mentioned transmission data telegrams or data packets. The networking itself is implemented, for example, in switched high-power data networks, in particular Ethernet networks, in that at least one coupling unit connected to both subscribers is connect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/64
CPCH04L12/6418H04L2012/6459
Inventor 乔基姆·费尔德冈特·斯坦德尔卡尔·韦伯
Owner SIEMENS AG
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