Heterogeneous time-triggered multi-network redundant transmission method

Abstract

The invention discloses a heterogeneous time-triggered multi-network redundant transmission method, which can reduce time delay and further improve network transmission certainty and real-time performance. The present invention is realized through the following technical solutions: in a plurality of relatively independent redundant transmission networks, the processing hosts with the same functional partition and their network ports are abstracted into a network node; then, the corresponding transmission of each node is configured according to the number of nodes Time slots; configure the planned time scheduling to each redundant network; when the network application is ready to send data packets, the source node A will copy the message into multiple copies, according to the different transmission time slots of each redundant network, respectively Through the physical links of multiple relatively independent redundant networks, heterogeneous time-triggered transmission (time-triggered transmission scheduling 1, ..., time-triggered transmission scheduling N) is used to send data to the destination node B, and the destination node B according to "take Data selection is based on the principle of "valid data arriving first".

Description

technical field [0001] The invention relates to a high-certainty, low-time-delay real-time transmission scheme of an airborne multi-redundancy network. Background technique [0002] The transmission of information is inseparable from the network, and the stability and reliability of the network are more and more valued by people. In a distributed network system, there are two different message transmission mechanisms: event-triggered mechanism and time-triggered mechanism. In the event-triggered mechanism, each terminal can randomly send data according to the application, and send and receive data frames in the order of first-come-first-served. When multiple tasks transmit data at the same time, the event-triggered method cannot guarantee communication delay and The certainty of time; in the time trigger mechanism, the entire system establishes a global unified clock, and performs data sending and receiving operations at the specified time in the specified time sequence. E...

AI Technical Summary

Problems solved by technology

[0011] At present, ordinary multi-network redundancy is only used to improve network reliability. By adding other backup transmission paths, simply copy and distribute data in multiple copies, and transmit them to destination nodes through multiple relatively independent bus networks to improve network reliability. This common multi-network redundancy is only based on reliability considerations, and does not fully exploit the value of multi-redundant networks.

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