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| Research of Virtual Combinatorial Scheduling Strategy in AFDX End System |
| Yuanyuan Xu, Hongjuan Ge, Huan Wu, Jianli Ni |
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Abstract The virtual combinatorial scheduling strategy, which combines
short-frame first scheduling with Weighted Round Robin (WRR) method,
achieved the effect of WRR based on shortest frame priority
scheduling. By deriving the maximum delay upper bound of this novel
combinatorial scheduling strategy based on network calculus, the
paper studied the relationship of the maximum delay upper bound,
Virtual Link (VL) parameters and weight ratio, studied and compared
the difference between the new strategy and FIFO. Model the AFDX end
system with OPNET, simulated and compared the transmitting
efficiency under the two scheduling strategy. The results showed
that the AFDX end system possesses advantages of real-time standard,
precision and fairness, and indicated that the new scheduling
strategy is effective and feasible. Overall, the novel strategy
improved data processing capacity and efficiency, shortened the
maximum delay time of shortest-frame VL. Above all, it was mostly
applicable to airborne network with more short-frame data flow.
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| DOI:10.12733/jics20105206 |
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