30여 년 전에 연구망으로서 개발이 시작된 인터넷은 현재 사회의 공공 인프라로서의 역할로 기능이 확장되면서 이동성, QoS 지원, 보안성 등을 고려한 점진적 개선이 이루어져 왔다. 그러나, 이러한 점진적 개선 방법의 한계성 때문에 현재의 인터넷 구조가 향후 20~30년 후의 미래사회의 인프라로서도 적합할 것인가에 대한 의구심이 생기기 시작하였다. 이에 따라, 기존 인터넷과의 호환성을 고려하지 않고, 처음부터 현재 및 미래 서비스의 요구사항에 기반하여 네트워크를 새로 설계하고자 하는 “미래인터넷” 연구가 시작되었다. 미래인터넷에 대한 연구는 아직 초기단계로서, 거시적 목표를 위해 다양한 네트워크 아키텍처들이 제시되고 있는데, 본 고에서는 미래인터넷의 등장 배경과 지향점, 각국의 연구 현황을 살펴보고, 미래인터넷 아키텍처에 대한 연구자들의 다양한 아이디어를 주요 이슈별로 소개하고자 한다.
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