多媒体网络中基于优先级调度的实时QoS研究

计算机工程与应用 ›› 2011, Vol. 47 ›› Issue (34): 107-110.

多媒体网络中基于优先级调度的实时QoS研究

黄福，王高才，赖明星

广西大学计算机与电子信息学院，南宁 530004

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-12-01 发布日期:2011-12-01

Study on real-time QoS based on priority schedulability in multimedia networks

HUANG Fu，WANG Gaocai，LAI Mingxing

School of Computer and Electrical Information，Guangxi University，Nanning 530004，China

Received:1900-01-01 Revised:1900-01-01 Online:2011-12-01 Published:2011-12-01

摘要/Abstract

摘要： 使用到达函数和服务函数描述不同优先级实时分组集的到达和处理，基于期望可调度性来刻画不同紧急程度的实时应用对延迟的要求。提出的方法能够实现实时QoS控制下的瞬时特性研究，判定某一时刻不同优先级分组集的可调度性。最后对指数分布服务时间下的不同优先级分组集的期望可调度性进行了研究，基于理论结论的数值结果和基于模型的模拟结果是一致的。

关键词: 多媒体网络, 实时QoS, 优先级调度, 期望可调度性

Abstract: The arrival function and service function are used to describe the arrival and processing of real-time packets in different priorities，and expected schedulability is proposed to describe the demand of delay of real-time packets.The instantaneous characteristic can be analyzed，and arrival packets with different priorities will be scheduled at any given real-time interval by the method.It investigates the probabilistic schedulability of real-time packets under exponential distribution service time in a FIFO network.The numerical analysis based on the theoretic results is consistent with the simulation analysis.

Key words: multimedia network, real-time QoS, priority scheduling, expected schedulability

黄福，王高才，赖明星. 多媒体网络中基于优先级调度的实时QoS研究[J]. 计算机工程与应用, 2011, 47(34): 107-110.

HUANG Fu，WANG Gaocai，LAI Mingxing. Study on real-time QoS based on priority schedulability in multimedia networks[J]. Computer Engineering and Applications, 2011, 47(34): 107-110.

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