标记传递法是在LAN(计算机局部网络)中广泛应用的一种存取控制方式。本文在保持标记法双环网高可靠性的前提下,为了改善时延特性而提出了预测肘延最短的复用方式、推导出信息平均时延的近似计算公式。并与原有方式进行了比较,所得结果说明其性能是优越的。 Tag passing is a widely used access control method in LAN (Local Area Network). In order to improve the delay characteristics, this paper proposes the shortest multiplexing method to predict the elbow delay, and deduces the approximate formula of the average information delay. And compared with the original way, the results show that its performance is superior.