Data transmission method, device and system

A data transmission method and technology of the main device, applied in the direction of digital transmission system, transmission system, data exchange network, etc., can solve the problems of low data synchronization efficiency and affect the normal operation of business, and achieve the effect of improving efficiency

Active Publication Date: 2010-08-18
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When A occurs a disaster and switches to B, B needs to perform an initial full resynchronization with C before starting the subsequent communication work, which affects the normal operation of the business and the data synchronization efficiency is low

Method used

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  • Data transmission method, device and system
  • Data transmission method, device and system
  • Data transmission method, device and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] figure 1 A schematic flowchart of a data transmission method provided by an embodiment of the present invention, such as figure 1 As shown, the method is mainly based on the improvement made by the synchronous mode slave device, which may include:

[0046] Step 101, the synchronous mode slave device receives the update data sent by the master device, and records the data identification with the update data;

[0047] Wherein, the data identifier may be a time period number at which the master device receives the update data, or other data identifiers such as a time stamp or a serial number may be used.

[0048]After the sync-mode slave records the data identification with the update data, the sync-mode slave may store the update data in its delta data set window.

[0049] Further, the synchronous mode slave device may receive an update acknowledgment message sent by the master device for all asynchronous mode slave devices, and the update acknowledgment message include...

Embodiment 2

[0055] figure 2 A schematic flow chart of another data transmission method provided by the embodiment of the present invention, such as figure 2 As shown, the method is mainly based on the improvement made by the asynchronous mode slave device, which may include:

[0056] Step 201, the asynchronous mode slave device receives the update data sent by the master device, and records the data identification with the update data;

[0057] Wherein, the data identifier may be a time period number at which the master device receives the update data, or other data identifiers such as a time stamp or a serial number may be used.

[0058] After the asynchronous mode slave device records the data identification with the update data, the asynchronous mode slave device may store the update data in the incremental data set window of the asynchronous mode slave device;

[0059] Further, the asynchronous mode slave device may send an update acknowledgment message of the asynchronous mode sl...

Embodiment 3

[0066] image 3 A schematic flowchart of another data transmission method provided by the embodiment of the present invention, such as image 3 As shown, the method is mainly based on improvements made by the master device, which may include:

[0067] Step 301, the master device receives the update data, and records the data identification with the update data;

[0068] Wherein, the data identifier may be a time period number at which the master device receives the update data, or other data identifiers such as a time stamp or a serial number may be used.

[0069] Step 302, the master device sends a data synchronization message to the synchronous mode slave device and the asynchronous mode slave device respectively, and the data synchronization message includes the update data and the data identifier;

[0070] Step 303. The master device receives an update acknowledgment message of the asynchronous mode slave device sent by the asynchronous mode slave device, and the update ...

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PUM

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Abstract

The embodiment of the invention discloses a data transmission method, a data transmission device and a data transmission system. The data transmission method comprises that: a synchronous mode slave device receives the refreshed data transmitted by a master device, and records the data identifier of the refreshed data; if the synchronous mode slave device takes over the work of the master device, the synchronous mode slave device receives the data identifier of the refreshed data newly received by an asynchronous mode slave device; and the synchronous mode slave device transmits the refreshed data which is received by the synchronous mode slave device and is not received by the asynchronous mode slave device to the asynchronous mode slave device according to the data identifier of the refreshed data newly received by the asynchronous mode slave device and the data identifier of the refreshed data newly received by the synchronous mode slave device. The embodiment of the invention solves the problem that the conventional data synchronization must use full synchronization so as to result in low synchronization efficiency; and the efficiency for the data synchronization is improved.

Description

technical field [0001] The present invention relates to computer and communication technology, in particular to a data transmission method, device and system. Background technique [0002] The method of data transmission between multiple devices can be applied to many occasions. For example, a disaster recovery system generally includes a production center and a backup center. By establishing and maintaining a data storage system in a remote backup center, geographical separation is used to ensure disaster recovery. System and data resilience to catastrophic events. Usually the data transmission mode can adopt synchronous mode or asynchronous mode. In the synchronous mode, the production center synchronously sends the write I / O data received from the application system to the remote backup center, and waits for the backup center’s write completion confirmation message before writing to the local data storage system of the production center. Since the data is synchronously ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08H04L12/24
Inventor 王飞罗庆超张国彬
Owner HUAWEI TECH CO LTD
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