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학술지 Popularity-Based Adaptive Content Delivery Scheme with In-Network Caching
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김정윤, 이규명, 최준균
ETRI Journal, v.36 no.5, pp.819-828
한국전자통신연구원 (ETRI)
14MI1200, 네트워크 분리 및 보호를 위한 경로설정 기술 표준개발, 김정윤
To solve the increasing popularity of video streaming services over the Internet, recent research activities have addressed the locality of content delivery from a network edge by introducing a storage module into a router. To employ in-network caching and persistent request routing, this paper introduces a hybrid content delivery network (CDN) system combining novel content routers in an underlay together with a traditional CDN server in an overlay. This system first selects the most suitable delivery scheme (that is, multicast or broadcast) for the content in question and then allocates an appropriate number of channels based on a consideration of the content's popularity. The proposed scheme aims to minimize traffic volume and achieve optimal delivery cost, since the most popular content is delivered through broadcast channels and the least popular through multicast channels. The performance of the adaptive scheme is clearly evaluated and compared against both the multicast and broadcast schemes in terms of the optimal in-network caching size and number of unicast channels in a content router to observe the significant impact of our proposed scheme.
KSP 제안 키워드
Broadcast Channel, Content delivery network(CDN), In-Network Caching, Multicast channels, Request Routing, Traffic volume, Video Streaming Service, adaptive content, adaptive scheme, hybrid content