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Data transmission method and equipment

A data transmission method and data transmission technology, applied in the field of field bus communication, can solve the problems of scheduling time consumption and the average scheduling time being affected by the protocol level, etc., and achieve the effect of improving effective bandwidth, reducing effective packet header length, and reducing delay time

Active Publication Date: 2017-05-24
北京中航通用科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If it is converted to military use, since its scheduling generally occurs at a higher level, its scheduling time will inevitably be consumed between different levels, and the average scheduling time at the same rate is greatly affected by the protocol level

Method used

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  • Data transmission method and equipment
  • Data transmission method and equipment
  • Data transmission method and equipment

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Embodiment 1

[0035] This embodiment provides a command-response high-speed bus data transmission method using a specific data frame structure. The bus transmission rate ranges from 10Mbps / 100Mbps / 1000Mbps to 2Gbps / 4Gbps / 8Gbps, and is compatible with both optical and photoelectric interface modes. The data frame protocol level consistency is adopted to reduce the excessive redundancy of the frame header and reduce the average scheduling time.

[0036] The specific data frame structure designed for data transmission such as figure 1 As shown, the explanation of each field is as follows:

[0037] 1 Constant field: Proto / Version are the protocol and protocol version followed by the message respectively, and the lengths are 8 bits and 4 bits respectively;

[0038] 2 Message control: Pv is used to control whether the data frame is a broadcast message, and the length is 1 bit; Priority, identifies the priority of the data frame, and the length is 3 bits; Retry is the number of retransmissions, a...

Embodiment 2

[0074] This embodiment provides a device for data transmission using a specific data frame structure, such as Figure 8 As shown, the communication device includes an encapsulation unit, a sending unit, a receiving unit, an analyzing unit, and a processing unit, wherein:

[0075] The encapsulation unit is used to pack different types of data services into figure 1 The frame formats shown are encapsulated into corresponding data frames;

[0076] The sending unit is used to send the encapsulated data frame to the receiver;

[0077] The receiving unit is used to receive data frames sent to this device by other devices;

[0078] The parsing unit is used to parse the received data frame;

[0079] The processing unit is configured to perform corresponding processing according to the parsing result of the parsing unit.

[0080] In the data transmission method and device of the present invention, various data services are classified according to certain rules, and the sender class...

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Abstract

The invention discloses a data transmission method and equipment. The data is encapsulated as a data frame according to a specific frame format so as to be transmitted, wherein the specific format comprises a constant field, a message control field, a source address, a destination address, a destination port field, a data frame character field, a command character field, and check field. Compared with three onboard network interconnection bus standards in the prior art, the data transmission method based on the specific frame format disclosed by the invention improves the bus effective bandwidth and lowers the delay time of the single command since the effective packet header length is greatly reduced.

Description

technical field [0001] The invention relates to the field bus communication field, in particular to a command-response high-speed bus data transmission method and equipment transmitted through optical fiber and Ethernet and adopting a specific data frame structure. Background technique [0002] High-speed data bus technology is the key technology of the avionics system. The avionics system is the "brain" and "nerve center" of modern aircraft, and the on-board bus network is its key "neural network". The existing on-board network interconnection is mainly Based on the following technical standards, one is the MIL-STD1553 bus standard, the other is the fiber-based FC-AE-1553 bus standard, and the third is the Ethernet-based AFDX bus standard. [0003] The MIL-STD-1553 bus is an information transmission bus standard specially designated for aircraft equipment in the United States. It has high real-time reliability, and its operating frequency is 1Mbps. It adopts Manchester II...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L12/40
Inventor 郑云龙柳卯陈宗权
Owner 北京中航通用科技有限公司
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