限时令牌网络实时特性的关键参数研究

Research on key parameter of real time performance for timed token network

针对限时令牌网络消息传输的实时性问题 ,建立了网络和消息模型 ,指出影响网络实时性能的关键参数 ,并依据线性令牌传递网络 ( L TPB)的消息调度原则推导出其关键参数的数学表达 ,最后 ,对限时令牌网络典型代表光纤分布式数据接口网络 ( FDDI)和 L

This paper studies the problem of guaranteeing real time message deadlines in communication network where the timed token passing bus is employed.We propose a network and message model ,find out the key parameter which affects real time performance for network,derive an analytical expression of the key parameter for LTPB network,and finally compare the two typical representatives,LTPB and FDDI,drawing the conclusion that the former is better than the latter in the realI time performance.