Time-triggered Ethernet switch based on biplane and packet switching method

Abstract

The invention discloses a time-triggered Ethernet switch based on a biplane and a packet switching method, which mainly solve the problem that the deterministic and real-time performances of the existing time-triggered Ethernet switch forwarding a time-triggered TT service are poor. The device comprises an input shunting module (1), a clock synchronizer (2), a time-triggered TT switching plane (3), an event-triggered ET switching plane (4) and an output arbitration module (5). The input shunting module is respectively connected with the clock synchronizer, the TT switching plane, and the ET switching plane, to complete switch clock synchronization and to forward the TT service frame and the ET service frame respectively; the TT switching plane and the ET switching plane are both connectedwith the output arbitration module to select a service frame which is preferentially sent and to complete sending of data. The time-triggered Ethernet switch based on a biplane and the packet switching method in the invention can ensure absolute priority forwarding of the time-triggered TT service, reduce the forwarding delay of the time-triggered TT service, and can be applied to a time-triggeredswitching network with high speed and low delay.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a time-triggered Ethernet switch, which can be applied to real-time, reliable and high-security Ethernet switching networks supporting the time-triggered function. Background technique [0002] Ethernet transmission technology is widely used in all walks of life in society due to its advantages of low cost, high bandwidth, and suitability for various services. However, with the development of distributed systems, the real-time, reliability, and high security requirements for data interaction between devices in the system are more urgent, making Ethernet technology unsuitable for corresponding business fields. The emergence of time-triggered Ethernet TTE combines the real-time performance and certainty of time-triggered technology with the advantages of traditional Ethernet, effectively solving the disadvantages of traditional Ethernet that cannot meet the requir...

AI Technical Summary

Problems solved by technology

The disadvantage of this device is that the task scheduling control module uniformly schedules time-triggered TT services and event-triggered ET services, and time-triggered TT services and event-triggered ET services interfere with each other in most operations such as internal scheduling, resulting in The time-triggered TT service has too long processing delay inside the switch, which cannot guarantee the deterministic and real-time requirements of the time-triggered TT service

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