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Avionics full duplex switched Ethernet (AFDX) terminal protocol stack, and data receiving and sending method thereof

A terminal protocol and data technology, which is applied in the field of avionics system information transmission, can solve the problems that the AFDX terminal protocol processing speed cannot be improved, and the power consumption of the terminal system cannot be reduced, so as to improve reliability, reduce power consumption, and reduce workload. Effect

Inactive Publication Date: 2013-04-03
CHINESE AERONAUTICAL RADIO ELECTRONICS RES INST
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Problems solved by technology

[0010] The purpose of the present invention is to provide an AFDX terminal protocol stack to solve the problem that the existing AFDX terminal protocol stack cannot improve the processing speed of the AFDX terminal protocol and meet the line speed processing required by the ARINC664 specification, and cannot reduce the power consumption of the terminal system

Method used

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  • Avionics full duplex switched Ethernet (AFDX) terminal protocol stack, and data receiving and sending method thereof
  • Avionics full duplex switched Ethernet (AFDX) terminal protocol stack, and data receiving and sending method thereof
  • Avionics full duplex switched Ethernet (AFDX) terminal protocol stack, and data receiving and sending method thereof

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Embodiment Construction

[0029] see figure 2 As shown, for implementing the structural representation of the AFDX terminal protocol stack of the present invention, the AFDX terminal protocol stack includes the following main modules:

[0030] The PCI interface module mainly includes a PCI core module (PCI core) and a PCI decoding module. The PCI core module is used to interface with the PCI bus and process PCI bus interface signals according to the PCI bus protocol. The PCI decoding module decodes the PCI data according to different PCI addresses, writes the configuration data into the configuration module (detailed later), writes the data to be sent into the sending port, and extracts the data of the receiving port. At the same time, it provides various statistical information of the MIB management information base, so that it can be read by the upper layer. Among them, the MIB management information base is used to give various statistical information, which can be used for monitoring and debuggin...

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Abstract

The invention provides an avionics full duplex switched Ethernet (AFDX) terminal protocol stack, and a data receiving and sending method thereof. The AFDX terminal protocol stack uses a hardware description language to design and achieve a terminal system requested by ARINC 664 specifications, supports a user datagram protocol (UDP) layer, an internet protocol (IP) layer and a media access control (MAC) layer, and supports all protocol stack functions such as information sharding and recombining, flow controlling, integrity checking and redundancy managing. By adopting the mode, the processing speed of the AFDX terminal protocol is improved, requirements for line speed processing and time delaying of the ARINC664 specifications are satisfied, power consumption of the terminal system is reduced, workloads of an external host processor is decreased, reliability of the terminal system is improved, and simultaneously production cost of the terminal system is reduced effectively.

Description

【Technical field】 [0001] The invention relates to the information transmission technology of the avionics system, in particular to the AFDX terminal protocol stack and its data receiving and sending method. 【Background technique】 [0002] Avionic Full-Duplex Switched Ethernet (AFDX / ARINC664) is a deterministic aircraft data network bus system suitable for information transmission of avionics systems. The AFDX network is based on the standard IEEE802.3 technology, which defines a standard for avionics electrical and protocol specifications. [0003] AFDX terminals are distributed on each sub-node of the avionics system, and its main function is to provide safe and reliable data exchange between avionics subsystems. The AFDX terminal is identified by a maximum 16-bit field, which is divided into three parts: domain ID (Domain ID), side ID (Side ID) and location ID (Location ID), which are usually combined into a network ID (Network ID) ) and equipment ID (Equipment ID) two p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08H04L29/12H04L12/24
Inventor 谭永亮高磊姜芹关乃轩
Owner CHINESE AERONAUTICAL RADIO ELECTRONICS RES INST
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