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A Data Exchange Method Based on Multiple Switching Planes

A switching plane and data exchange technology, applied in the field of communication, can solve the problems of long data packet reassembly time, short interruption of data communication, complicated implementation, etc., and achieve the effect of low data transmission delay, improved reliability, and simple implementation.

Active Publication Date: 2018-12-07
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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Problems solved by technology

This method has two defects: on the one hand, it is necessary to judge which switching plane to send the data packet to based on the state of the switching plane at the input end, which is more complicated to implement; on the other hand, because each segment of the data packet needs to be load Transmission, the delay of each segmented data transmission to the output port is different, resulting in disorder, and the time for data packet reassembly is longer
Therefore, the traditional multi-plane switching method is more complicated to implement, and the failure of any switching plane will cause a short interruption of data communication
Therefore, it is not suitable for on-board communication environment

Method used

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  • A Data Exchange Method Based on Multiple Switching Planes

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Embodiment Construction

[0022] refer to figure 1 , a data exchange method based on multiple exchange planes, characterized in that it comprises steps:

[0023] ① After the input port receives the data packet from the service access port, after searching the forwarding table to obtain the output port, according to the difference of the output port, put it into the corresponding VOQ virtual output queue;

[0024] ②The data put into the VOQ virtual output queue is multicast to the switching matrices of multiple switching planes according to the first-in-first-out principle according to the port status of the switching matrix output to the switching plane. The switching matrix adopts back pressure control to control the input The data to the switching matrix; wherein, when the data sent to the switching matrix is ​​sent, a unique time stamp and ID of the system are generated according to each queue, and the integrity check of the data is added at the same time;

[0025] ③Schedule each switching plane in...

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Abstract

The invention discloses a data switching method based on a multi-switching plane, and relates to a technology of reliably switching access services through multiple switching planes in the field of communication switching. The method adopts multiple switching planes to transmit data packages, and fault of any switching plane does not influence the other switching planes and whole switching system. Integrity verification is performed on the data packages, so that the integrity of the data packages is ensured, and the unicity of the data is ensured through only time tag and ID in the system. The method has advantages of simple realization, high reliability, strong expandability and the like, and is suitable for the environments with special requirements for high reliability such as poor equipment operation environment, difficult component changing environment and the like.

Description

technical field [0001] The invention relates to a data exchange method based on multiple exchange planes in the field of communication, and is particularly suitable for reliable exchange of data packets in a satellite communication network and non-inductive switch for failure of a single exchange path. Background technique [0002] Space-borne switching equipment is different from ground information network nodes, it is in a complex space physical environment and may be interfered by harsh high-energy particles. The cost and launch cost of satellites are very high, and it is difficult to replace or reconfigure the equipment components on the satellite after launch, so it is necessary to pay high attention to its reliability at the beginning of the design. [0003] The data exchange method based on single plane dispatches data packets from the input port to the corresponding output port through a switching matrix. Once the switching plane is congested or fails, the communicat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/931H04L12/947
CPCH04L49/10H04L49/25
Inventor 李文江王俊芳李吉良赵利霞李渊宣二勇郝晓鹏张惠峥
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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