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GPON作为一种宽带接入技术,在传输效率、有效带宽、QoS(服务质量)、用户接口的丰富性和服务的安全性等方面都有较大的优势。目前该技术已在我国得到了较为广泛的应用,且GPON的诸多特点都与GPON的成帧技术有着密不可分的联系。通过对GPON系统组成、GPON中PMD层和GTC层功能的简要介绍,重点讨论了GPON技术的上下行帧结构的组成以及GEM帧的结构,进而从总体上了解了整个GPON技术的业务支持能力,以为人们后期应用提供一定的参考借鉴。
As a broadband access technology, GPON has great advantages in transmission efficiency, effective bandwidth, QoS (Quality of Service), richness of user interfaces and service security. At present, the technology has been widely used in our country, and many features of GPON are closely linked with the GPON framing technology. Through the introduction of the functions of GPON system, the functions of PMD layer and GTC layer in GPON, the composition of uplink and downlink frame structure of GPON technology and the structure of GEM frame are mainly discussed. Then the business support ability of the whole GPON technology is generally understood, In order to provide some reference for people’s later application.