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goose&sv fast decoding method

A decoding method and fast technology, applied in digital transmission systems, electrical components, error prevention, etc., can solve problems such as repeated decoding operations, and achieve the effect of reducing CPU data processing operations

Active Publication Date: 2018-04-24
STATE GRID CORP OF CHINA +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The current decoding method needs to fully decode each frame of data, resulting in a large number of repeated decoding operations

Method used

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  • goose&sv fast decoding method

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Embodiment Construction

[0017] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments:

[0018] See figure 1 , The present invention includes the following steps:

[0019] 1) Decode the GOOSE&SV message and use the ASN.1 keyword of the APDU to generate a check code;

[0020] 2) Compare the check code generated in step 1) with the check code after the last GOOSE&SV message decoding;

[0021] 3) In step 2), if the two check codes are the same, the last decoding information is directly used to extract the APDU data without repeated decoding, and then the APDU data is processed to end the operation;

[0022] 4) In step 2), if the two check codes are different, decode part of the APDU data, then extract the APDU data and perform data processing, and finally end the operation.

[0023] The steps for the first decoding of the GOOSE&SV message are as follows:

[0024] 1) Decode the GOOSE&SV message, and use the ASN.1 keyword of the APDU to generate a ch...

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Abstract

The present invention discloses a GOOSE&SV fast decoding method, comprising the following steps: 1) decoding a GOOSE&SV message and generating a check code; 2) comparing the check code generated in the step 1) with a check code generated from the previous GOOSE&SV decoding; 3) in the step 2), if the two check codes are the same, directly referencing the previous decoding information to extract APDU data, processing the APDU data and completing operation; and 4) in the step 2), if the two check codes are different, decoding part of the APDU data, then extracting APDU data and performing data processing, and completing operation at last. If two check codes are the same, the method can directly move a data pointer and directly extract the data therein without the need of performing operations such as associated judgement processing on data, thereby avoiding full ASN.1 decoding of this portion of data, and reducing a large number of CPU data processing operations.

Description

Technical field [0001] The invention relates to a method for decoding GOOSE&SV message data in a substation event, in particular to a method for fast decoding of GOOSE&SV. Background technique [0002] In the field of power systems, GOOSE&SV messages are generally encoded according to the ASN.1 standard and then sent to the server. The server system then decodes the received GOOSE&SV messages according to the ASN.1 standard. The current decoding method requires complete decoding of each frame of data, resulting in a large number of repeated decoding operations. As the amount of communication data becomes stronger and stronger, the efficiency of the server's message decoding also needs to be improved. Therefore, a highly efficient GOOSE&SV message decoding method is needed. Summary of the invention [0003] The technical problem to be solved by the present invention is to provide a GOOSE&SV fast decoding method that can improve the decoding efficiency of GOOSE&SV messages. [0004]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L29/06
CPCH04L69/06
Inventor 黄毅李大勇钱阳东房亚囡宋国旺王洋杨畅王建中王华张永伍
Owner STATE GRID CORP OF CHINA
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