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1·So in the school, a problem come apon.

所以在学校，一个问题出现了。

2·The influences of ATM based passive optical network (APON) on the cell delay are investigated.

研究了基于AT M的无源光网络(APON)对信元时延造成的影响。

3·Based on studying APON, we have studyed EPON MAC protocol and put forward new upstream access algorithm.

本文在研究APON的基础上，对EPON的MAC协议进行了深入的研究，提出了较有新意的上行接入算法。

4·In this paper, we analyze the characteristics of APON, and a distributed hierarchical scheduling scheme is proposed.

本文分析了APON系统的特点，提出了分布式分层调度的方案。

5·Centrally controlled reservation-based bandwidth allocation algorithm is the first choice for APON, because it ensures better delay and throughput.

中央控制基于预约的带宽分配算法是APON的首选，它具有良好的时延和吞吐量特性。

6·The paper introduced the functional block schematic of realizing the whole ONT in APON based on the network model of B-ISDN and bring forward path layer system design according to the protocol.

文中在讨论宽带综合业务数据网（B-ISDN）网络分层模型的基础上，介绍了实现APON系统中ONT的总体方案功能模块图，并根据协议和ONT技术要求提出了通道层硬件电路设计。