论文标题
集成ICN和CDN切片作为服务
Integrated ICN and CDN Slice as a Service
论文作者
论文摘要
在本文中,我们利用网络功能虚拟化(NFV)和多访问边缘计算(MEC)技术,提出了一个将ICN(信息中心网络)与CDN(内容交付网络)集成的系统,以提供有效的内容交付服务。提出的系统将动态CDN切片概念与基于NDN(命名数据网络)的ICN切片概念相结合,以避免核心网络拥塞。根据内容的性质和潜在观众的地理分布,将动态CDN切片部署到最佳位置的缓存内容。虚拟缓存服务器以及支持的虚拟转码器都放置在属于多重管理域的云上,形成CDN切片。 ICN切片反过来又用于内容的区域分布,利用基于名称的访问和自动网络内的内容缓存。这样可以从附近的网络节点传递内容,从而避免了内容的重复传输并确保响应时间较短。我们的实验表明,在几乎所有方面,包括服务可伸缩性,可靠性和服务质量在内,ICN/CDN集成都比传统CDN更好。
In this article, we leverage Network Function Virtualization (NFV) and Multi-Access Edge Computing (MEC) technologies, proposing a system which integrates ICN (Information-Centric Network) with CDN (Content Delivery Network) to provide an efficient content delivery service. The proposed system combines the dynamic CDN slicing concept with the NDN (Named Data Network) based ICN slicing concept to avoid core network congestion. A dynamic CDN slice is deployed to cache content at optimal locations depending on the nature of the content and the geographical distributions of potential viewers. Virtual cache servers, along with supporting virtual transcoders, are placed across a cloud belonging to multiple-administrative domains, forming a CDN slice. The ICN slice is, in turn, used for the regional distribution of content, leveraging the name-based access and the autonomic in-network content caching. This enables the delivery of content from nearby network nodes, avoiding the duplicate transfer of content and also ensuring shorter response times. Our experiments demonstrate that integrated ICN/CDN is better than traditional CDN in almost all aspects, including service scalability, reliability, and quality of service.