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Improvement and advantages of 10 G EPON hierarchical model, which had been standardized in the framework of the IEEE 802.3av Task Force, are analyzed. Based on the analysis, the related upgrading technique scheme of 1 G EPON to 10 G EPON as well as the corresponding technical key bottlenecks of dynamic bandwidth allocation (DBA) mechanism and security problems are thoroughly studied. Furthermore, three kinds of networking schemes based on 10 G EPON systems are proposed, which can respectively be suitable for different situations of FTTH, FTTO and mobile communications. At the same time, these schemes can support various triple-play services and effectively integrate the computer communication with telephone and video services, providing a good reference for future 10 G EPON access network system.