Journal of Internet Computing and Services (인터넷정보학회논문지)

Korean Society for Internet Information (한국인터넷정보학회)
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Efficient Content Delivery Method in Wireless Content-Centric Network

무선 Content-Centric Network에서 효과적인 콘텐츠 전달 방식

  • Received : 2016.08.17
  • Accepted : 2017.01.10
  • Published : 2017.04.30
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Abstract

Recently, researches to adopt Content-centric network (CCN), which is one of the promising technologies for replacing TCP/IP-based networks, to wireless networks has actively performed. However, because of erroneous and unreliable channel characteristics, there are many problems to be resolved to adopt CCN to wireless networks. This paper proposes a method to reduce content download time because nodes possess only parts of content chunks. The proposed method enables a node having parts of content chunks to request the rest of parts of content chunks to a provider before a Consumer requests the content. As a consequence, the content download time is reduced.

최근 TCP/IP 네트워크를 대체할 잘 알려진 미래 인터넷 가술들 중에서 Content-Centric Network(CCN) 방식을 무선 환경에 적용시키려는 연구들이 활발하다. 그러나 무선 환경의 불안전한 채널과 높은 오류율은 기존의 CCN 개념을 도입하기에 다소 어려움이 존재한다. 본 논문에서는 이러한 문제점들 중, 노드들이 Content의 일부 chunk들만 저장하는 경우에 발생하는 Content Download Time 지연 문제에 대한 개선 방법을 논의한다. 본 논문에서 제안하는 프로토콜은 전체의 콘텐츠가 아닌 일부 chunk만을 소유하고 있는 노드들이 나머지 Chunk들을 콘텐츠 소비자로 부터의 부족한 Chunk에 대한 요청을 하여 부족한 Chunk를 채움과 동시에 콘텐츠 소비자에게 소유하고 있는 Chunk를 전달함으로써 더 빠르게 콘텐츠를 전달할 수 있게 한다.

Keywords

References

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