【摘要】 介绍了基于 ＡＴＭ的无源光网络（ＡＰＯＮ），对该系统的接入机制进行了深入讨论。由于其结构的特殊性，ＡＰＯＮ需要特殊的ＭＡＣ协议，利用优先级队列模型，对ＡＰＯＮ系统提供的多种优先级业务进行了理论分析，并得出了有益的结论。更多还原

【Abstract】 In this paper, a passive optical network based on ATM (APON ) is presented, and APON’s access mechanism is anatomized. APON needs a special MAC protocol because of its special structure. Setting up a queuing model with priority, a theoretic analysis of APON system for the support of services with several priorities is given, and some useful conclusion is met.更多还原