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具有两类信息基于轮询的实时介质访问方法研究
Real Time Polling-based Medium Access Method with Two Message Classes
【摘要】 介绍一种新型轮询系统,工作站需要发送两类信息。其中实时信息的相邻生成时刻间距有最小值,而非实时信息则服从泊松分布。当被轮询时工作站采用混合策略服务这两类信息,实时信息采用穷尽式服务策略,非实时信息采用k-有限式服务策略。运用仿真方法,研究了服务参数对于轮询系统性能的影响。实时信息从产生到被服务的时间有确定的上界值,推导了实时信息的这种等待时间上界。
【Abstract】 A real time polling system with two message classes is proposed.The arrival time interval of the contiguous real-time message has a minimum.The non-real-time message is satisfied Poisson distribution.The station serves these two classes of message with mixed service discipline,the real time message with exhaustive service discipline,and the other with k-limited service discipline.The influence of the servicing parameters on the performance of the polling system is analyzed with a computer simulation program.The waiting times of the first message class have a determinable upper bound which are given in this paper and verified with simulation results.
【Key words】 polling; message class; mean waiting times; k-limited; upper bound;
- 【文献出处】 化工自动化及仪表 ,Control and Instruments in Chemical Industry , 编辑部邮箱 ,2006年06期
- 【分类号】TP393.1
- 【下载频次】32