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Avionics full-duplex real-time Ethernet data package reconstitution method and system

A technology for reorganizing systems and data packets, which is applied in the field of AFDX and can solve problems such as no suitable technical solutions

Active Publication Date: 2014-01-08
BEIJING WATERTEK INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on the data reassembly of the received data part of the above protocol, there is no suitable technical solution for the realization of the data packet reassembly using hardware, so it is urgent to propose a data packet reassembly technology that can be applied to hardware implementation

Method used

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  • Avionics full-duplex real-time Ethernet data package reconstitution method and system
  • Avionics full-duplex real-time Ethernet data package reconstitution method and system
  • Avionics full-duplex real-time Ethernet data package reconstitution method and system

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Experimental program
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Embodiment 1

[0036] Many data packets received by the AFDX communication network are data packets that need to be reassembled, and must be reassembled to complete the normal reception of AFDX data packets. Therefore, this embodiment provides an AFDX data packet reorganization method, which mainly uses a hardware description language to complete the data reorganization of the data packets received by the AFDX that need to be reassembled.

[0037] The following describes the specific process of AFDX packet reassembly, the process is as follows figure 1 As shown, the following steps 100 to 500 are included:

[0038] Step 100, divide the storage space, and use the group identification information of the reassembled data packets as an index to save the reassembled data packet storage list.

[0039] First, the packet that needs to be reassembled has the following fields:

[0040] Fragment ID and Offset, source IP address, destination IP address, protocol.

[0041] Among them, when the Fragmen...

Embodiment 2

[0063] This implementation provides an AFDX data packet reassembly system, which can realize the method of the above-mentioned embodiment 1, and the system includes:

[0064] The search unit searches for the data packets that belong to the same group as the currently received data packets from the received data packets that need to be reassembled, and sequentially mounts the currently received data packets on the searched data packet storage list of the group;

[0065] The reassembly unit, when the sum of the lengths of all the data packets mounted in the data packet storage list is equal to the total data length of the data packets that need to be reassembled in this group, uploads all the data packets in the data packet storage list to the upper layer application to complete the reassembly .

[0066] Wherein, the search unit searches the data packets that belong to the same group as the currently received data packets from the received data packets that need to be reassemble...

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Abstract

The invention discloses an avionics full-duplex real-time Ethernet data package reconstitution method and system, which relate to AFDX (Avionics Full Duplex Switched Ethernet) technology. The method comprises the following steps of: searching a data package, which belongs to a same group with currently received data packages, from received data packages to be reconstituted, and sequentially mounting the currently received data packages on a searched data package storage list; if the sum of the lengths of all data packages mounted in the data package storage list is equal to the total length of data of the group of data packages to be reconstituted, uploading all the data packages mounted in the data package storage list to upper layer application to complete reconstitution. The invention also discloses the avionics full-duplex real-time Ethernet data package reconstitution system. According to the technical scheme, data reconstitution of the to-be-reconstituted data packages received by AFDX can be completed by adopting a hardware description language, so that normal receiving of an AFDX network data package is completed.

Description

technical field [0001] The invention relates to AFDX technology, in particular to an avionics full-duplex real-time Ethernet (AFDX) data packet recombination method and system. Background technique [0002] AFDX (Avionics Full Duplex Switched Ethernet, Avionics Full Duplex Switched Ethernet) is a technology implemented by Airbus for certain aircraft data networks (Aircraft Data Networks) according to the ARINC664 specification. [0003] At present, it has been widely used to interconnect electronic systems in aviation vehicles, such as engines, flight control components, cruise systems, etc. To date, AFDX has been used in the A380, A400M and Boeing B787 programs. [0004] There is no suitable technical solution for the data reassembly of the received data part based on the above protocol using hardware, so it is urgent to propose a data packet reassembly technology that can be applied to hardware implementation. Contents of the invention [0005] The technical problem to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/861H04L12/28
Inventor 苗家旺杨水华万波胡永峰李鹏英原中亮赵伟华汪伟
Owner BEIJING WATERTEK INFORMATION TECH