본 논문에서는 2009년 5월부터 유럽 DVB (Digitd Video Broadcasting)를 중심으로 본격적으로 진행되고 있는 차세대 VSAT(Very Small Aperture Terminal) 시스템 표준기술인 DVB-RCS (Return Channel via Satellite) NG(Next Generation) 표준의 시스템 및 서비스 개요와 표준화 ad-hoc 기술 그룹회의에서 제안된 기술들에 대해서 소개하고자 한다. DVB-RCS NG 표준은 2008년 5월부터 DVB-RCS CM(Commercial Module)과 시스템 interoperability 테스트 관할 협의체인 유럽의 Satlabs를 중심으로 새로운 규격 작업을 위한 상업적 요구사항 선정 및 구체적인 서비스/시스템 모델을 수립하였다. DVB-TM (Technical Module)과 CM을 거쳐 최종적으로 SB(Steering Board)에서 2008년 10월에 승인을 받고 RCS adhoc 그룹은 study mission을 수행하게 되었다. 2008년 11월부터 DVB-RCS NG 규격을 위한 call for technology 작업, 제안된 기술에 대한 평가 방법, 이를 평가하기 위한 system 그룹 및 study 그룹이 결성되어 2009년 1월에 call for technology가 공지되고 2009년 5월 4일까지 20개 기관으로부터 19개의 기고서가 제출되었다. 본고에서는 2009년 7월 회의까지 검토된 후보기술에 대한 소개와 향후, RCS NG 표준에서 유망한 기술에 대하여 다루고자 한다.
KSP Keywords
Ad hoc, DVB-RCS, Return channel, Very Small Aperture Terminal(VSAT), Video broadcasting, technical module
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