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描述了基于 WDM的光接入网结构 ,它能提供宽带 INTERNET业务。该结构利用了无源光收发网络和可配置的馈线网。基于物理层的网络结构设计已经有人提出来了。着眼于高层结构考虑 ,讨论了以下问题 :电层和光层的联合设计 ;WDM MAC协议 ;IP和 WDM层之间的电复用和交换的选择 ;光电联合保护机制 ;随着业务量改变 ,逻辑网络拓扑结构随之重构的变换算法
Describes the WDM-based optical access network structure, which can provide broadband INTERNET business. This architecture utilizes passive optical transceivers and configurable feeder networks. Network structure based on the physical layer design has been proposed. Focusing on high-level structural considerations, the following issues are discussed: joint design of electrical and optical layers; WDM MAC protocol; choice of electrical multiplexing and switching between IP and WDM layers; protection mechanism of opto-electronic combination; as traffic changes, logic Transformation Algorithm of Network Topology Structure Reconstruction