유선과 무선은 각각의 사업영역에서 개별적으로 성장해 왔으나 최근 유선분야와 무선분야를 통합하여 이용자에게 편리하고 저렴한 새로운 통신서비스를 찾아내고자 하는 유무선 통합이 새로운 화두로 떠오르고 있다. 차세대 유무선통합망은 단순히 유선과 무선을 통합하는 의미를 넘어 IP 기반의 All-IP 망으로서 다양한 접속방법에 제약을 받지 않지 않으며, 유무선의 구별없이 다양한 콘텐츠와 애플리케이션을 통합망을 통해 이용자에게 전달할 수 있는 망이 될 것으로 기대되고 있다. 이러한 통합망의 백홀을 구축하는 기반 기술로 투자비용 및 운용비용에 많은 장점을 가지고 있고, 기존 캐리어급의 견고함, 품질 및 운용관리 기능 등을 제공할 수 있는 패킷 기반의 전달망 기술이 유력한 기술로 부각되고 있다. 본 기고에서는 All-IP 유무선통합망을 위한 패킷 기반의 백홀 전달망 기술에 대한 동향을 소개하고, 최근 많은 관심을 받고 있는 무선 백홀망을 통합하기 위한 필요조건들을 살펴보고자 한다.
KSP Keywords
All-IP
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