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Flow control method and device of AFDX (Avionics Full Duplex Switched Ethernet) switch

A flow control and switch technology, applied in the field of avionics network communication, can solve the problems of waste of storage space, slow response speed of avionics communication, complicated flow control methods, etc., to improve performance and capacity, reduce storage space occupation, flow rate The effect of simple control process

Active Publication Date: 2010-08-11
BEIJING RUNKE GENERAL TECH
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

An AFDX switch needs to store at least 4096 VL routing, filtering, and flow control configuration information at the same time. Therefore, it is difficult for CPU or FPGA to perform a large number of "bucket" capacity calculations at the same time. It can only be achieved by compromising performance and capacity. solve
[0017] Aiming at the problem that the flow control method of the AFDX network switch in the related art is too complicated, which leads to the slow response speed and waste of storage space in the avionics communication process, no effective solution has been proposed yet

Method used

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  • Flow control method and device of AFDX (Avionics Full Duplex Switched Ethernet) switch
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  • Flow control method and device of AFDX (Avionics Full Duplex Switched Ethernet) switch

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Embodiment Construction

[0039] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0040] According to an embodiment of the present invention, a flow control method of an AFDX switch is provided.

[0041] Figure 4 It is a schematic diagram of a flow control method for an AFDX switch according to an embodiment of the present invention.

[0042] Such as Figure 4 As shown, the method includes the following steps S402 to S406:

[0043] Step S402, the switch monitors the data link information at the entrance, and obtains the arrival time of the data link information;

[0044] Step S404, the switch judges whether the data link information is valid according to the arrival time of the data link information;

[0045] Step S406, the switch sends valid data link information.

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Abstract

The invention discloses a flow control method and device of an AFDX switch, wherein the method comprises the following steps of: monitoring data link information at an entrance by using the switch to acquire the arrival time of the data link information; judging whether the data link information is valid or not according to the arrival time of the data link information by using the switch; and sending the valid data link information by using the switch. Through the invention, the performance and the capacity of the AFDX network switch can be improved.

Description

technical field [0001] The invention relates to the field of avionics network communication, in particular to a flow control method and device for an AFDX switch. Background technique [0002] The avionics network communication system plays a key system integration role for modern aircraft, and is very important for improving the combat capability of the aircraft. The avionics system takes the comprehensive display and control system as the core, and integrates a large number of airborne equipment, such as mission computer, air data system, radar system, inertial navigation system, plug-in management system, radio communication system, identification friend or foe system, etc. However, the traditional MIL-1553B or ARINC429 bus technology has defects such as slow data exchange speed and complicated cables. [0003] Although the 802.3 LAN in the aviation field has high transmission speed, low cost and good commercial availability, the 802.3 LAN often lacks the guarantee of ba...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L12/04H04L12/801
Inventor 张博
Owner BEIJING RUNKE GENERAL TECH
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