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Data communication method, device and system

A data communication and data packet technology, applied in the field of communication, can solve problems such as data errors and failure to realize error data detection

Active Publication Date: 2013-06-26
CRSC RESEARCH & DESIGN INSTITUTE GROUP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the present invention provides a data communication method, device and system to solve the problem that when the hardware of the existing communication device fails, data errors are caused, and the detection of erroneous data in communication cannot be realized by using a special security check algorithm. question

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  • Data communication method, device and system
  • Data communication method, device and system

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Embodiment Construction

[0023] The following clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0024] an embodiment

[0025] The data communication method includes downlink communication and uplink communication, that is, two-way communication of data between the main control device and the communication peer. In order to ensure the high reliability and high security of data communication, a security check algorithm is usually added to check the data to realize the detection of erroneous data in the communication.

[0026] However, in uplink communication, that is, when the main control device sends application data to the c...

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Abstract

The invention discloses a data communication method, device and system. The data communication method contains uplink communication and downlink communication, wherein the uplink communication comprises the following steps: dividing the application data sent by a main-control device to first-path application data and second-path application data; selecting a check algorithm, check any path of application data, generating the check code of the path of application data; combining the check code with the other path of application data to form a data packet with the format meeting the demands of the communication protocol, to the opposite communication end. By adopting the above technical scheme, when the uplink communication is performed, the application data and check codes to be sent to the opposite communication end are separately obtained from two paths of application data. Therefore, when any path of application data has an error and the opposite communication end checks the application data, the generated check code is different from the received check code, thus the opposite communication end judges that the application data have an error and does not use the application data and the high reliability and high safety of communication can be ensured.

Description

technical field [0001] The present invention relates to the technical field of communication, and more specifically, to a data communication method, device and system. Background technique [0002] The data interaction between the master control device and the communication peer is completed through the data communication device, that is, the data communication device realizes the uplink communication and downlink communication of data between the master control device and the communication peer. Taking the high-speed train safety control system as an example, the on-board equipment in the control system is the main control device, and when the ground equipment is the communication peer, the on-board equipment sends the application data generated by it—car control curve data to the ground equipment through the data communication device , after receiving the vehicle control curve data, the ground equipment verifies whether the vehicle control curve data is correct. The groun...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00
Inventor 杨剑张波刘岭马振球车惠军周暐
Owner CRSC RESEARCH & DESIGN INSTITUTE GROUP CO LTD
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