Xian-Bo He

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EDF is a classic dynamic embedded real-time multi-task scheduling algorithm. In an embedded soft real-time system, the deadline missing ratio is an important metric to evaluate system performance. When an embedded soft real-time system is overloaded, EDF algorithm is not effective. In addition, considering the unsteadiness and unpredictability of a(More)
In a soft real-time system, the deadline missing ratio is an important metric to evaluate system performance. In addition, considering the unsteadiness and unpredictability of a practical task running environment due to the unsteadiness of network communication and the estimation deviation, it is necessary to introduce fuzzy concept and theory to the(More)
EDF is a classic dynamic real-time task scheduling algorithm. In an embedded soft real-time system, the deadline missing ratio is an important metric to evaluate system performance. When an embedded soft real-time system is overloaded, EDF algorithm is not effective. In addition, considering the unsteadiness and unpredictability of a practical task running(More)
In the task running environment oriented to communication field applications, the characteristcs of a task are commonly undeterministic and unpredictable due to the unsteadiness of communication networks. It is necessary to apply fuzzy concept and theory into the embedded soft real-time task scheduling field. In this paper, we presented a fuzzy scheduling(More)
LLF(Least Laxity First) is one of classic dynamic real-time task scheduling algorithms. Considering the unsteadiness and unpredictability of a practical task running environment due to the unsteadiness of network communication and the time estimation deviation, it is necessary to introduce fuzzy concept and theory to the scheduling field of embedded soft(More)
Considering the unsteadiness and unpredictability of a practical task running environment due to the unsteadiness of network communication and the estimation deviation, it is necessary to introduce fuzzy concept and theory to the scheduling and performance control of the soft real-time application systems oriented communication and network fields. In this(More)
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