IPTV, Netflix, YouTube 등 인터넷기반 멀티미디어 서비스의 성장 및 비디오 품질이 고화질로 향상됨에 따라 전체 인터넷 트래픽의 60%이상을 멀티미디어 트래픽이 차지하고 있다. 구글, 아마존 같은 공룡 기업의 경우 자체 CDN네트워크를 이용하여 서비스를 하고 있으며, 중소규모의 콘텐츠 제공자는 네트워크 비용에 대한 부담을 해소하기 위해 P2P 방식의 분산 스트리밍을 사용하고 있다. 그러나 P2P방식은 Inter-domain 트래픽 등과 관련하여ISP와 잠재적 갈등 요소를 내재하고 있다. 이러한 문제를 해결하고 P2P 방식의 장점을 활용하기 위한 표준적 해법으로, ISO/IEC와 ITU-T에서는 Managed P2P 관련 표준들을 제정하였으며, 2017년 12월 MP2P 기반의 멀티미디어 스트리밍 프로토콜군을 제정하였다. 본 고에서는 멀티미디어 분산 스트리밍 서비스 관련 시장, 기술, 표준화 동향에 대해 간략히 기술하고, ITU-T에서 최근 제정한 멀티미디어 스트리밍 프로토콜 표준기술에 대해 알아보도록 한다.
KSP Keywords
ITU-T, Inter-domain
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