Method for realizing compression algorithm in time-triggered Ethernet

A technology of compression algorithm and implementation method, which is applied in the field of communication, can solve the problems of increasing calculation delay, consumption, and multiple resources, and achieve the effects of improving efficiency, improving computing efficiency, and saving costs

Active Publication Date: 2021-04-02
SHAANXI ELECTRICAL APPLIANCE RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The difficulty in the compression algorithm is that since it is impossible to estimate how many PCF frames there will be at the beginning, it is generally necessary to store the arrival time of all PCF frames, which will consume more resources and increase the calculation delay.

Method used

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  • Method for realizing compression algorithm in time-triggered Ethernet
  • Method for realizing compression algorithm in time-triggered Ethernet

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Embodiment Construction

[0035] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0036] The invention provides a method for realizing a compression algorithm in a time-triggered Ethernet, which adopts a PCF frame receiving module, a synchronous monitoring module, a member vector processing module, a compression processing module and a compression value calculation module.

[0037] Such as figure 1 As shown, the implementation process is as follows:

[0038] Step 1. The PCF frame receiving module receives the PCF frames that have completed the timing maintenance algorithm. Since the received PCF frames may come from different end systems and different times, these PCF frames are monitored synchronously through the synchronization monitoring module, that is, judgment In the synchronization priority field and the synchronization field field in the PCF frame, only the PCF frame with the same two is judged as a synchronous PCF frame, that ...

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Abstract

The invention discloses a method for realizing a compression algorithm in a time-triggered Ethernet, which comprises the following steps that: a PCF frame receiving module receives a PCF frame subjected to a time sequence maintaining algorithm, judges a synchronized PCF frame and transmits a synchronization priority field and synchronization domain field content to a corresponding field of a new PCF frame; the member vector processing module performs summation processing on member vector fields of all the synchronized PCF frames and transmits results to corresponding fields of a new PCF frame;the compression processing module calculates to obtain a compression correction value according to an initial compression value, a given fault point fault tolerance value and a synchronous PCF framenumber value obtained by a time sequence maintaining algorithm; and finally, a final compression value is obtained through a compression value calculation module, and the final compression value is transmitted to the new PCF frame. The method can improve the calculation efficiency.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a method for realizing a compression algorithm in a time-triggered Ethernet. Background technique [0002] In the time-triggered Ethernet, due to a certain deviation of the clock crystal oscillator, there is a certain deviation between the sending time point of the SM node and the receiving time point of the PCF frame received by the CM node. By using the compression algorithm, all the PCF frames received by the CM are centrally integrated, and the received PCF frames are integrated into a PCF frame close to the global synchronization time point, and the compression time value compression_pit is calculated to be used for clock value correction . [0003] In addition, summation processing is performed on the member vector fields, and all SM nodes that perform the compression algorithm are recorded. Finally, a new PCF frame is generated and sent to each SM / SC node. [0004...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06
CPCH04L69/04
Inventor 刘晓宇张瑾瑶高波王莹李建江李永亮
Owner SHAANXI ELECTRICAL APPLIANCE RES INST
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