FC-AE-1553 data exchange mode design method, FC-AE-1553 data exchange mode network control method and FC-AE-1553 data exchange mode energy saving method

A technology of data exchange and mode design, applied in the directions of star electromagnetic network, electromagnetic network arrangement, electrical components, etc., can solve the problem that passive star network does not have adaptive transmission switching mode and network control method for topology structure, etc. The effect of reducing network system power consumption, reducing delay, and improving reliability

Inactive Publication Date: 2015-10-14
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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Problems solved by technology

[0008] The purpose of the present invention is to solve the problem that the FC-AE-1553 protocol passive star network does not have an adaptive transmission

Method used

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  • FC-AE-1553 data exchange mode design method, FC-AE-1553 data exchange mode network control method and FC-AE-1553 data exchange mode energy saving method
  • FC-AE-1553 data exchange mode design method, FC-AE-1553 data exchange mode network control method and FC-AE-1553 data exchange mode energy saving method
  • FC-AE-1553 data exchange mode design method, FC-AE-1553 data exchange mode network control method and FC-AE-1553 data exchange mode energy saving method

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[0050] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0051] The invention provides a method for designing an FC-AE-1553 data exchange mode, and divides 10 data exchange modes supported by the FC-AE-1553 protocol into three types: conventional mode, transit mode and multicast mode.

[0052] (1) Normal mode includes NC-NT mode, NT-NC mode, no data word mode command, send data word mode command and receive data word mode command. The five data exchange modes in the conventional mode are basically consistent with the protocol standard topology in the protocol stack switching layer (FC-4 layer) under the passive star topology, and all of them are unidirectional data transmission. The difference is that the data communication methods at the protocol stack link layer (FC-2 layer) are divided into NC to NT communication and NT to NC communication.

[0053] The specific method of NC to NT communication is:

[005...

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Abstract

The invention discloses an FC-AE-1553 data exchange mode design method, an FC-AE-1553 data exchange mode network control method and an FC-AE-1553 data exchange mode energy saving method. According to the invention, all levels of the FC-AE-1553 protocol stack support the passive star topology, and 10 data exchange modes of the FC-4 level are compatibly designed according to 3 categories; besides, a method of "binary decision and cut-through forwarding" is proposed in a transfer mode to reduce the delay of data forwarding. The invention further provides a command time-scale control method of "timing inquiry and asynchronous processing", and the method can effectively process the terminal fault self-inspection and further improve the reliability of the network. The invention further provides two methods of a "half-sleep energy-saving mechanism" and a "total-sleep energy-saving mechanism" to reduce the network terminal power consumption. When a passive optical fiber coupler is used in the network, due to the passive characteristics of the coupler, when the two methods are adopted, the network system power consumption and the networking cost can be greatly reduced, and the irradiation resistance can be enhanced.

Description

technical field [0001] The invention belongs to the technical field of avionics airborne high-speed data bus, and in particular relates to the design of an FC-AE-1553 data exchange mode, network control and energy-saving method. Background technique [0002] The FC-AE-1553 protocol is generated by mapping the MIL-STD-1553B protocol on the protocol stack switching layer (FC-4 layer) of the Fiber Channel (Fibre Channel, FC) protocol. The protocol stack structure is as follows figure 1 As shown, the underlying Fiber Channel technology was originally designed to provide storage area networks (Storage Area Network, SAN) for data transmission between computers and storage systems. When the FC-AE-1553 protocol is directly applied In the networking of aerospace vehicle systems, the disadvantages of complex structure, high cost, troublesome maintenance, and high power consumption become particularly prominent. Especially in the face of the design trend of modularization, integration...

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Application Information

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IPC IPC(8): H04B10/272H04L29/06
Inventor 周东车明田忠
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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