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Target program online upgrading method based on improved ARINC615A protocol

An ARINC615A, target program technology, applied in the field of target program online upgrade based on the improved ARINC615A protocol, can solve the problem that the target program cannot be loaded normally, does not support the data block size and the timeout auto-negotiation mechanism, etc., to improve the file transfer speed, Avoid unrecoverable failures and improve the effect of protocol scalability

Active Publication Date: 2020-09-22
XIAN AVIATION COMPUTING TECH RES INST OF AVIATION IND CORP OF CHINA
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problem that the ARINC615A loading and unloading protocol does not support the self-negotiation mechanism of data block size and timeout time, which may cause the target program to fail to load normally, the present invention proposes an online upgrading method of the target program based on the improved ARINC615A protocol

Method used

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  • Target program online upgrading method based on improved ARINC615A protocol
  • Target program online upgrading method based on improved ARINC615A protocol
  • Target program online upgrading method based on improved ARINC615A protocol

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with accompanying drawing.

[0036] The present invention makes the following improvements to the ARINC615A protocol:

[0037] 1. Extend the RRQ, WRQ and OACK message formats defined in the ARINC615A protocol

[0038] figure 1 For the extended RRQ / WRQ message format, the data block length and timeout time fields are added to store the maximum data block length and timeout time expected by the loader and allowed by the target end.

[0039] figure 2 For the OACK packet format, the data block length and timeout time fields are added to store the maximum data block length and the longest timeout time allowed by the destination.

[0040] The above data block length field and timeout time field added in the RRQ, WRQ and OACK messages are composed of field name (data block length identifier, timeout time identifier) ​​and field value (data block length, timeout time).

[0041] 2. Improve the read / write f...

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Abstract

In order to solve the technical problem that an ARINC615A loading and unloading protocol does not support a data block size and timeout auto-negotiation mechanism and may cause that a target program cannot be normally loaded, the invention provides a target program online upgrading method based on an improved ARINC615A protocol. According to the invention, the formats of the RRQ, the WRQ and the OACK message in the ARINC615A protocol are expanded, and the file reading / writing request flow is improved, so that the auto-negotiation of the size of a transmission data block and the timeout time isrealized, and the protocol expansion capability is improved.

Description

technical field [0001] The invention belongs to the field of airborne network of avionics system, and in particular relates to an online upgrading method of a target program based on the improved ARINC615A protocol. Background technique [0002] With the rapid development of technologies such as Integrated Modular Avionics (IMA: Integrated Modular Avionics) and airborne networks, and the increasing functional requirements of avionics systems, the scale and number of avionics systems have increased dramatically. The maintenance and upgrade capabilities of target programs such as configuration tables and logic have put forward higher requirements. [0003] The ARINC615A loading and unloading protocol is a standard protocol for loading and unloading data files in the avionics system. It has the advantages of safety and reliability. It consists of two parts, one is the loading device (loading end), which runs on the node machine equipment of the avionics network; the other part ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F8/654G06F9/4401H04L29/08
CPCG06F8/654G06F9/4401H04L67/06Y02D10/00
Inventor 逯计划刘智武贾世伟刘芸袁万腾于峰
Owner XIAN AVIATION COMPUTING TECH RES INST OF AVIATION IND CORP OF CHINA
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