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Double network hot standby method

A hot backup, network technology, applied in the direction of data exchange network, digital transmission system, electrical components, etc., can solve problems such as data loss, and achieve the effect of solving data loss and duplication, and the method is simple and easy to implement

Inactive Publication Date: 2011-01-12
NR ELECTRIC CO LTD +1
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  • Abstract
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Problems solved by technology

[0007] The purpose of the present invention is to provide a method for dual-network data transmission, which adopts double-receipt and double-transmission without network switching, that is, the same data is sent simultaneously by dual-network and has the same number, and the receiver uses double-network to receive simultaneously, and judges the data according to the number Effectiveness, effectively solve the problem of data loss and duplication in the process of dual-network switching

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Embodiment Construction

[0020] When the network is working normally, both network connections are in working state, the sent data of the data sender is queued to be sent, and the data sending module takes out the data in order, and then sends the data to the dual network at the same time; the data receiver simultaneously receives through the dual network Data; the single disconnection of any network connection in the dual network will not affect the data transmission, and only when the dual network connection is disconnected, the data transmission will be interrupted.

[0021] Among them, the two connections of the dual network use the same number for the received and sent data, and handle data numbering and numbering exceptions according to the following rules:

[0022] (1) Numbering initialization: After the sending and receiving parties establish a connection, the same initial number is used (for example, 0 is used by default). For a paired connection, the data number is set when the first connecti...

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Abstract

The invention discloses a double network hot standby method. The party to which data are to sent, namely a data receiver, of a data sender adopts two network connection channels which both are in work state, data to be sent of the data sender is queued to be sent, a data sending module of the data sender takes out the data in sequence and sends the data to the two network connection channels; the data receiver receives the data simultaneously through the two network connection channels; and data transmission is not influenced when data receiving of any one of the two network connection channels is interrupted alone, and the data transmission is interrupted only after both the two network connection channels are interrupted. The method provided by the invention is simple and feasible and effectively and reliably solves the problems of data loss and repetition in double network data transmission treatment process, so that the time interval-less double network switching is realized, and the double network can be called interval-less switching double network.

Description

technical field [0001] The invention relates to a data transmission dual-network hot backup method, in particular to double-receipt and double-transmission, the same data has the same number, and the method for judging the validity of the data by numbering is mainly used in data transmission in substation automation. Background technique [0002] The substation integrated automation system has high requirements on the reliability of data transmission, so how to solve the reliability of data transmission is a very important problem in the communication process. At present, to solve the problem of data transmission reliability, the main method is to use dual networks as backup for each other. How to process the data of the dual network and how to ensure that the data is not lost or repeated during the network switching process are the core issues in the dual network solution. At present, the existing dual-network solutions adopt the method of single-network transmission and n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/22H04L12/24
Inventor 李友军徐广辉张桂阳王文龙笃俊
Owner NR ELECTRIC CO LTD
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