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Offline Scheduling Method of tte Network Based on Response Constraints

A scheduling method and network technology, applied in the direction of data exchange network, digital transmission system, electrical components, etc., can solve the problems of backward interconnection transmission system and complex overall system of spacecraft, and achieve the effect of simplifying the design process

Active Publication Date: 2021-12-17
TIANJIN UNIV
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Problems solved by technology

But at the same time, it has also caused the overall system of the spacecraft to become increasingly complex. Although it has undergone many upgrades of electronic technology, the processing capacity of each single device has been greatly improved, but the interconnection transmission system between devices is slightly behind.

Method used

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  • Offline Scheduling Method of tte Network Based on Response Constraints
  • Offline Scheduling Method of tte Network Based on Response Constraints
  • Offline Scheduling Method of tte Network Based on Response Constraints

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Embodiment Construction

[0042] Based on the existing TTE mixed traffic partition scheduling strategy, this paper introduces TT response constraints, and designs an offline scheduling table generation method suitable for TTE networks with response constraints. The strategy of synthesizing and compounding the network traffic information first, and then refining the scheduling tables of different terminal nodes is adopted to simplify the generation method of the scheduling table, and design the offline scheduling table generation software, and verify it through examples.

[0043] 1. TTE mixed traffic partition scheduling

[0044] The TTE network is divided into three categories according to the time importance of traffic: TT information has high real-time requirements, and its waiting time, delay, jitter, etc. are fixed, and all TT information is sent on time according to the pre-designed schedule. It has the highest priority among all messages; RC messages need to guarantee the maximum bandwidth interv...

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Abstract

The invention belongs to the field of aerospace communication. In order to introduce TT response constraints, a method for generating an off-line scheduling table suitable for TTE networks with response constraints is designed. For this reason, the technical scheme that the present invention takes is, based on the TTE network off-line dispatching method of response constraint, the steps are as follows: 1) TTE mixed traffic partition scheduling; In the basic scheduling mode of TTE mixed traffic partition scheduling, the consideration of TT information constraint response is introduced, and the priority of TT information response is added to the generation factors of the periodic scheduling table, and all TT information is used to generate a composite scheduling table first and then download The strategy sent to each port node simplifies the process of generating the periodic schedule table. The invention is mainly applied to space communication occasions.

Description

technical field [0001] The invention belongs to the field of aerospace communication and the field of time-triggered Ethernet. Specifically, it relates to a TTE network offline scheduling method based on response constraints. Background technique [0002] With the continuous development and progress of aerospace technology, aerospace technology has widely benefited all mankind in the civilian field, especially in the fields of space exploration, satellite navigation, meteorological observation, and extraterrestrial life exploration. But at the same time, it has also caused the overall system of the spacecraft to become increasingly complex. Although the processing capacity of each stand-alone device has been greatly improved after many upgrades of electronic technology, the interconnection transmission system between devices is slightly behind. [0003] Time-triggered Ethernet (Time-triggered Ethernet, TTE) is a high-speed, real-time, fault-tolerant Ethernet network communi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/851H04L12/853H04L12/865H04L12/869H04L12/875H04L12/877H04L29/08H04L47/2416H04L47/525H04L47/56H04L47/6275
CPCH04L47/2433H04L47/2416H04L47/58H04L47/6275H04L47/56H04L47/525H04L67/61
Inventor 汪清王阔滕立平
Owner TIANJIN UNIV
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