关键词: 光传输网络;切割与重组;光数据单元;数据包

Abstract:

In view of the limited capacity and rate of OTN signal transferring in circuit switching,the paper researches the advantages of optical transport network based on the packet structure and puts forward a solution.This article first introduces the basic structure of the packet switching network combination with the optical transmission network and the OTN frame structure and hybrid network standard package format,and then describes a realizable structure which integrates the OTN technology and packet technology.This structure can de-multiplex optical channel data unit to the lower order form,and then cut them into discrete packets.These packets can be sent to packet switching chip via standard package interface,after which the packets flow to reassemble module where they can be reassembled into continuous data streams.The data streams are multiplexed to higher optical channel data unit form and sent out in multiplex module.

Key words: optical transmission network;segmentation and reassemble;optical data unit,packet