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Periodic scheduling timetable construction method applied to time-triggered switched network

A switched network and time-triggered technology, applied in the field of periodic scheduling schedule construction, can solve problems such as difficulty in generating scheduling schedule maintenance for switched networks, etc.

Active Publication Date: 2011-11-23
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is more difficult to generate and maintain the scheduling schedule of the switched network

Method used

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  • Periodic scheduling timetable construction method applied to time-triggered switched network
  • Periodic scheduling timetable construction method applied to time-triggered switched network
  • Periodic scheduling timetable construction method applied to time-triggered switched network

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Embodiment Construction

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] In the present invention, the data frame flow periodically transmitted by the time-triggered mechanism is called time-triggered flow (denoted as TT flow), the data frame transmitted in TT flow is called TT frame, and the network communication task corresponding to TT flow is called TT task , that is, the time-triggered periodic task. The period of the TT task is called the TT task period. The present invention also allows RC traffic and BE traffic with low priority to be compatible with TT traffic time-sharing sharing physical link in the same network under the premise of time slot reservation and priority limitation.

[0022] The application environment of the present invention is a time-triggered switching network with a time synchronization mechanism, especially including a TTE (Time-Triggered Ethernet, Time-Triggered Ethernet) network of TTTech Co...

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Abstract

The invention discloses a periodic scheduling timetable construction method applied to a time-triggered switched network. The periodic scheduling timetable construction method is based on the time-triggered switched network, time-triggered (TT) task establishment and deletion flows are designed on the basis of putting forward the concept of a periodic scheduling timetable to realize the effective real-time transmission of a TT task; the establishment of the periodic scheduling timetable in each node in a system is realized by putting forward an offline task establishment method and a dynamic task establishment method; the optimization of the dynamic task establishment method is realized by putting forward a left compression principle; and the form assessment method and optimization of the offline task establishment method are realized by putting forward a public idle timeslot method.

Description

technical field [0001] The invention relates to a dispatching method applied to a time-triggered switching network, more particularly, a method for constructing a periodic dispatching schedule suitable for a time-triggered switching network. The present invention is based on the time synchronization and time trigger mechanism, establishes a periodic scheduling schedule on source nodes, destination nodes and switching nodes for periodic communication tasks, and schedules data frame transmission according to the periodic scheduling schedule. Background technique [0002] In a time-triggered network, time-triggered is used instead of event-triggered. If the scheduling of timing sending and forwarding triggers is reasonable, data frames can be avoided from competing for physical links and transmission time determinism can be guaranteed. In the process of data communication, each end system in the network sends data according to its own time schedule, that is, the starting time p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04J3/06H04L12/701
Inventor 刘晚春李峭何锋熊华钢
Owner BEIHANG UNIV
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