차세대 액세스 네트워크 진화방향

Evolutions in Next Generation Access Network

This article describes a definition of next generation access network, and introduces the researches about a candidate optical links for the next generation access network, and a trend of standardization of Next Generation Access (NGA). Expansion in reaches of access network enables to the evolutions to the metro-access union system. Also, this paper reviews the access network in Korea, and suggests the requirements for the system in NGA.