An On-Line ASAP Scheduling Method for Time-Triggered Messages

  • Guevara Ania*
  • , Qiao Li
  • , Ruowen Yan
  • *Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The Time-Triggered Ethernet (TTEthernet) had been under considerations to be adopted in aerospace or spacecraft avionics domain, because of its time deterministic to allocate Time-Triggered messages belonging to each strictly periodic virtual links (VLs) into scheduled time windows according to off-line generated timetables. An on-line time window allocation method for Time-Triggered messages using a heuristic method called As Soon As Possible (ASAP) was present in this paper. Under a topological configuration with multi-stage connected TTEthernet switches and full-duplex accessing end systems, an optimal path for each on-line scheduled VL can be selected firstly as a result of searching orderly set of physical links which make the allocation more easy. If the smallest sum of occupied time-slots and the smallest number of hops along candidate paths become an incompatible dilemma, a criterion was addressed to make a reasonable choice. With shifted and masked time-scales of each selected physical links, some non-occupied time slots are reserved for the on-line scheduled VL, which is going to achieve these slots unless other VLs’ conflicted selections. Cases in MATLAB™ language had been developed and studied to make this method verified.

Original languageEnglish
Title of host publicationCommunications, Signal Processing, and Systems - Proceedings of the 8th International Conference on Communications, Signal Processing, and Systems, CSPS 2019
EditorsQilian Liang, Wei Wang, Xin Liu, Zhenyu Na, Min Jia, Baoju Zhang
PublisherSpringer
Pages1930-1940
Number of pages11
ISBN (Print)9789811394089
DOIs
StatePublished - 2020
Event8th International Conference on Communications, Signal Processing, and Systems, CSPS 2019 - Urumqi, China
Duration: 20 Jul 201922 Jul 2019

Publication series

NameLecture Notes in Electrical Engineering
Volume571 LNEE
ISSN (Print)1876-1100
ISSN (Electronic)1876-1119

Conference

Conference8th International Conference on Communications, Signal Processing, and Systems, CSPS 2019
Country/TerritoryChina
CityUrumqi
Period20/07/1922/07/19

Keywords

  • As-soon-as-possible algorithm
  • On-line scheduling
  • Onboard networks
  • Time-Triggered ethernet

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