통신망은 향후 통신 및 셀기반 통신망에 필요한 고속, 데이터 속도 및 투명성(transparency) 그리고 유연성(flexibility)을 제공하기 위해 빠르게 진화하고 있다. 전광 패킷 스위칭 망(all optical packet switching) 구조는 향후 급속도로 증가하는 데이터 통신 트래픽을 원활히 수용하기 위해서 싱글 홉 및 멀티 홉 전광 패킷 스위치 망의 요구사항을 만족하는 스위칭 속도, 성능, 확장성, 경제성 등을 고려한 실제 구현 가능한 구조의 필요성이 최근 대두되고 있다. 본 논문에서는 기존의 광 패킷 스위칭 기술의 한계를 극복할 수 있는 전광 멀티 홉 네트워크 기술을 기반으로 포토닉 패킷 스위칭 망을 구현하고자 세계적으로 연구되고 있는 전광 멀티 홉 네트워크 구조, 포토닉 패킷 스위칭 구조 그리고 시간동기 방법에 대해 최근의 연구동향을 분석한다.
KSP Keywords
Optical Packet Switching, all-optical
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