10년 단위의 진화를 거듭해오던 이동통신은 2020년경 5세대 통신이 상용화될 것으로 예상된다. 5G 통신은 4세대 이동통신에서 추구했던 서비스와 성능 목표를 넘어, 유무선의 장점을 수용하여 기존 서비스의 향상, 새로운 서비스 실현과 특수환경에서의 서비스 제공 등 사회 전반에 영향을 미칠 것이며, 5세대 통신으로 촉발된 사회 변화는 우리에게 위기이자 새로운 기회로 다가올 것이다. 세계는 5G 통신에 대한 비전, 요구사항 및 주요 요소 기술을 개발 중이다. 본고에서는 5세대 통신의 시장, 사용자, 트래픽 및 서비스 동향과 더불어 세계 각국 및 각 기관의 비전, 요구사항 및 기술동향을 소개한다. 현재 전 세계는 5세대 통신에 대한 다양한 의견을 제시하고 있으며, 협력과 경쟁이 심화되고 있다. 5G 기술 주도권 확보를 위해 세계 각국 및 각 기관의 동향 파악을 통한 대비가 필요하다.
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