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交换式以太网实时消息可调度性分析
引用本文:檀明,魏臻,韩江洪,钟伯成.交换式以太网实时消息可调度性分析[J].微电子学与计算机,2011,28(3):51-54,58.
作者姓名:檀明  魏臻  韩江洪  钟伯成
作者单位:1. 合肥工业大学,计算机与信息学院,安徽,合肥,230009;合肥学院,网络与智能信息处理重点实验室,安徽,合肥,230601
2. 合肥工业大学,计算机与信息学院,安徽,合肥,230009
3. 合肥学院,网络与智能信息处理重点实验室,安徽,合肥,230601
摘    要:针对交换式以太网不能满足工业数据通信的实时性要求问题,首先提出了一种改进的,在站点和交换机端均使用EDF算法的消息调度模型,并由源站点和目标站点以分布式方式对实时消息在链路的可调度性进行判定,从而简化了交换机的设计.另外,为保证实时消息在交换式以太网传输的实时性,分别给出了实时消息在发送和接收链路的可调度性判定条件,并进行了相应的理论证明.

关 键 词:交换式以太网  EDF调度算法  周期性实时消息

Feasibility Analysis for Real-Time Messages over Switched Ethernet
TAN Ming,WEI Zhen,HAN Jiang-hong,ZHONG Bo-cheng.Feasibility Analysis for Real-Time Messages over Switched Ethernet[J].Microelectronics & Computer,2011,28(3):51-54,58.
Authors:TAN Ming  WEI Zhen  HAN Jiang-hong  ZHONG Bo-cheng
Affiliation:TAN Ming1,2,WEI Zhen1,HAN Jiang-hong1,ZHONG Bo-cheng2(1 School of Computer and Information,HFUT,Hefei 230009,China,2 Key Laboratory of Network and Intelligent Information Processing,Hefei University,Hefei 230601,China)
Abstract:To overcome the drawback that switched Ethernet can not meet the real-time requirements in industrial communications,an improved message transmission model in which switch and the end-nodes controls the real-time traffic with Earliest Deadline First(EDF) scheduling was proposed.In addition,a distributed feasibility analysis method which is performed by the source and the destination nodes without the modification of the operational features of Ethernet switch was presented.Moreover,a more general condition ...
Keywords:switched Ethernet  EDF-based scheduling algorithm  real-time periodic message  
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