EPA调度算法信道利用率分析及仿真  

Analysis and Simulation of EPA Schedule Algorithm Channel Utilization Rate

作　　者：蔡晨光[1] 姜秀柱[1] 

机构地区：[1]中国矿业大学计算机科学与技术学院,江苏徐州221116

出　　处：《计算机工程》2012年第9期76-78,82,共4页Computer Engineering

摘　　要：分析EPA微网段中EPA通信调度管理实体的调度原理,讨论EPA通信调度算法的信道使用效率,并给出在一定条件下,周期数据传输阶段的信道利用率和非周期数据传输阶段的信道利用率。通过理论推导得出上限值及下限值。根据OPNET Modeler创建EPA仿真模型,证明EPA调度算法的信道利用率能够达到理论值的最大值与最小值,验证了理论推导结果的正确性。This paper analyzes the scheduling principles of Ethernet for Plant Automation（EPA） communication schedule management entity in the EPA micro-segment, discusses the channel schedule efficiency of EPA communication schedule algorithm, and gets the range of channel utilization in periodic data transmission stage and non-periodic data transmission stage under certain conditions. It obtains the maximum and minimum values of channel utilization through derivation. A EPA simulation model is designed, experiment shows that the utilization can obtain the extremum value of theoretica[ value, and veriftes the correctness of the theoretical results.

关 键 词：OPNET仿真 EPA协议 微网段 信道利用率 实时性 周期调度 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]