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随着用户对带宽需求的不断增加,光传输在接入网中的作用越来越重要。当前,最有前景的光接入网方案是无源光网络(PON)技术,而吉比特无源光网络(GPON)是PON技术中最具有代表性的。对基于GPON OLT网络部署思路和原则、OLT节点部署方案等关键问题进行了详细分析,并在此基础提出了两种OLT节点部署方案,同时对两种方案的优缺点进行了比较。
As users’ demands for bandwidth continue to increase, the role of optical transmission in access networks becomes more and more important. Currently, the most promising optical access network solution is Passive Optical Network (PON) technology, and Gigabit Optical Passive Optical Network (GPON) is the most representative of the PON technology. Based on the idea and principle of network deployment of GPON OLT network and the deployment of OLT nodes, the key issues such as the deployment of OLT are analyzed in detail. Based on this, two deployment scenarios of OLT nodes are proposed, and the advantages and disadvantages of the two schemes are compared.