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AFDX (Avionics Full Duplex Switched Ethernet) network delay reducing method

A network delay and delay technology, applied in the field of communication engineering, can solve problems such as difficulties, achieve the effect of equalizing the number of services, improving the efficiency of business data transmission, and reducing delay

Active Publication Date: 2015-04-01
北京华力创通科技股份有限公司
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Problems solved by technology

[0006] However, how to configure the parameters of each VL according to the current network topology and the actual business data transmission requirements of avionics equipment, so that each VL between the specified two ends (referring to the transmission end, such as A and B ends) It is difficult for the time delay of each VL to reach the predetermined threshold, which has not yet appeared in the existing technology, so that the time delay of each VL between the specified two ends can reach the predetermined threshold method

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  • AFDX (Avionics Full Duplex Switched Ethernet) network delay reducing method
  • AFDX (Avionics Full Duplex Switched Ethernet) network delay reducing method
  • AFDX (Avionics Full Duplex Switched Ethernet) network delay reducing method

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Embodiment Construction

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

[0043] An embodiment of the present invention provides...

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Abstract

The invention provides an AFDX (Avionics Full Duplex Switched Ethernet) network delay reducing method, which relates to the field of communication engineering. The AFDX network delay reducing method adopts a compound delay adjustment way, which comprises the following steps of after adjusting a BAG value of a VL with delay being more than a preset delay threshold between two assigned transmission terminals, judging the delay of each VL with the adjusted BAG value exceeds the preset delay threshold or not, if yes, transmitting assigned business data in the VL with the adjusted BAG value and the delay being more than the preset delay threshold through the VL with the delay being not more than the preset delay threshold between the two transmission terminals, so that the business volume in the VL with the delay being more than the threshold is shared by other VLs (VLs with the delay being not more than the preset delay threshold), the delay of the VLs with higher delay is reduced, the business volume sof VLs are relatively equal, and the business data transmission efficiency of the whole VL is also improved.

Description

technical field [0001] The invention relates to the field of communication engineering, in particular to a method for reducing time delay of an AFDX network. Background technique [0002] The AFDX network is the mainstream communication network protocol of the airborne avionics system. It is implemented on the basis of 100M Ethernet and in strict accordance with the ARINC664 standard. In the actual physical connection, according to the actual business transmission requirements of avionics equipment, different VLs (virtual links) can be divided according to the ARINC664 protocol to complete the exclusive network bandwidth communication of the dedicated line and fully guarantee its data transmission delay real-time. [0003] The AFDX network adopts static routing mode, and the whole network supports 65536 VLs. Each VL can specify the transmission of specific business data. In addition, it can also specify the maximum packet length (Lmax), minimum packet length (Lmin), and mi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/803H04L12/813H04L12/46H04L47/20
Inventor 王雁来陈亮陈芳芳卢庆川王传霸
Owner 北京华力创通科技股份有限公司
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