摘要
常规介质的计算机网络MAC层的帧长度与采用的介质访问控制方式有关。时于PLC网络,由于信道存在严重的非周期的异步脉冲干扰,其MAC层的帧长度不仅与采用的介质访问控制方式有关,而且与电力线上的脉冲干扰有关。论述了电力线信道上脉冲干扰的特性,运用概率论推导出存在脉冲干扰时求解敖据帧长度的数学模型,并进行了仿真模拟验证。通过理论计算和仿真模拟,表明应用本文提出的方法可求解在给定脉冲干扰情况下的最佳数据帧长度。
The length of the MAC layer frame in general-media computer networks is related to the method used in media access control. For Power Line Communications Networks (hereafter, 'PLC Networks') , the length of the MAC layer frame is associated not only with the method used in media access control but also with the nature of the interferences, since it suffers from a variety of interferences, which are non-periodic and asynchronous. This paper discusses the nature of the impulsive interferences with on the power line channels, and presents a model for finding a frame length and a simulated example using probability. By theoretical computation and simulation, indicate that the optimum frame length in a given channel condition can be easily obtained by the method proposed in this paper.
出处
《东莞理工学院学报》
2005年第3期84-88,共5页
Journal of Dongguan University of Technology
基金
国家863计划(No.863-104-03-01)项目资助
